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Abstracts for 215 completed projects are listed by topic
here. If you
would like additional information about any of these
projects, check out the summary included in our
annual
Center Progress Report
(listed by
year). You also may request a copy of the project's
complete final report by contacting the Leopold
Center office, (515) 294-3711, or
leocenter@iastate.edu
(use the identification
#). Twenty-five new projects from the 2008 Center
Progress Report are highlighted. |
Ecology and restoration of farmland woods
in central Iowa, 2001, #98-21
Abstract: The researchers studied the distribution and
abundance of the plant species of farmland woodlots in
central Iowa, with particular emphasis on the differences in
species composition between sites currently or recently
grazed by cattle versus those that had not been grazed for
more than 50 years. In addition, various attributes of
common species and less common (restricted) species were
compared.
Effects of transgenic Bacillus thuringiensis corn pollen
on the monarch butterfly, Danaus plexippus,
2003, #01-58
Abstract: Transgenic Bt corn has been widely planted in
Iowa. This study considered whether plant tissues released
by Bt corn (pollen and anthers) have an effect on monarch
butterfly larvae.
The effects of transgenic soybeans and associated
herbicide treatment upon soil-surface mesofauna, 2001,
#99-29
Abstract: While the percentage of transgenic soybean
varieties being planted in Iowa has increased greatly,
little has been done to evaluate the ecological consequences
of these new technologies. Investigators examined the
possible effects of three of these transgenic varieties and
their associated broad-spectrum herbicides on soil-surface
meso-fauna, specifically springtails.
Incorporating native plant communities on farms for
forage and wildlife, 1999, #96-74
Abstract: Rotational grazing systems have potential to
reduce soil loss and fossil fuel use, and may increase
biodiversity by providing a wildlife habitat. Establishing
native, warm-season plant communities based on the region's
native tallgrass prairie ecosystem as part of a rotational
grazing system would benefit graziers by offering higher
drought tolerance and pasture production levels in the
midsummer months.
Integrating hunting and grazing—a southern Iowa
investigation into management issues, 2005, #03-E6
Abstract: Land resources in southern Iowa are
limited, yet there is increased interest in both improved
wildlife habitat and hunter access to these lands. The study
looks at ways to achieve these goals without shortchanging
area farmers.
The role of herbaceous woodland perennial diversity for
improving nutrient uptake capacity of riparian areas,
2006, #E4-2004
Abstract: This project investigated the roles of forest
understory perennial plant communities in storing nutrients
and preventing pollution of surface waters.
Toxicity of pesticides adsorbed to suspended sediment to
larval fish in the Cedar River, 2001, #98-80
Abstract: How do suspended sediment and pesticides
introduced into Iowa streams and rivers by erosion of
agricultural soil affect warm water fish? This study looks
at how chlorpyrifos, a widely used pesticide, and suspended
sediment interact with each other in river water and their
effects on the survival of larval walleye.
The value of filter strips for grassland bird communities,
2004, #02-24
Abstract: Grassland birds may be attracted to filter
strips for nesting. This project explores what qualities
might be incorporated into filter strips to make them more
effective as bird habitat and nesting sites.
Wildlife use of terraces in Iowa row crop fields,
1999, #98-35
Abstract: Terracing is a soil conservation practice that
has been promoted throughout the Midwest since the days of
the Dust Bowl era. The benefits for controlling soil erosion
are well documented, but the values to wildlife are much
less clear. This study documented the numbers and species of
birds and small mammals as well as the number of small
mammal dens in southwest Iowa terraces.
Alternative and horticulture crop education and marketing
pilot project, 2002, #99-56
Abstract: How do farmers embark on a new type of production
system, such as for vegetable and horticultural crops? This
project helped a group of southern Iowa farmers organize
infrastructure and find markets for these crops outside the
usual farmers markets
Assessing the impact of instructors and students as transfer
agents, 2000, #99-07
Abstract: This project followed up with high school
vocational agriculture teachers to see whether their
students carried informational messages beyond the
classroom. It also investigated whether the level of
training the classroom instructor received on a particular
topic had an impact on student retention and use of the
message.
Building Hope in the Heartland: a training program, 2001,
special project
Abstract: Funding was used to help sponsor a workshop,
"Building Hope in the Heartland," on March 14, 2000, in
Dubuque, Iowa. Attendees included parish nurses, social
workers, and pastoral counselors.
Community and economic regeneration through strengthening
the local food economy, 2001, #98-13
Abstract: The goal of this project was to work with
institutional food buyers to explore and implement ways that
would help them purchase a greater portion of their food
supply from local/regional farmers and processors.
Community Guide to Agriculture (Johnson County), 2000,
special project
Abstract: More than 1,000 people have been reached though
the various Johnson County "Community Guide to Agriculture"
programs. Among the outreach efforts were workshops,
displays, farm and farm business tours, and programs on Iowa
City's public cable channel.
Compensation of farm employees, 1999, #98-64
Abstract: Iowa farm operators were surveyed to learn what
type and level of compensation they paid to full-time
employees in 1997. The average total compensation paid was
$26, 914, of which 79 percent consisted of cash wages.
Benefits accounted for 18 percent of the compensation, and
bonuses and wages in kind amounted to 3 percent. Housing and
insurance plans were the most significant benefits provided.
Determining the benefits of environmental improvements in
pork production and their sustainability: a community-based
study of Iowa's pork industry, 1999, #97-52
Abstract: What is a more sustainable environment worth to
pork producers, neighbors, rural community residents, and
pork consumers? Surveys and experimental auctions were used
to gauge participants' willingness to pay for pork products
produced in systems with differing environmental
improvements and/or impacts.
Developing a local food system in association with
business and industry, 2005, #02-67
Abstract: A Maquoketa, Iowa, partnership was created
to establish a demonstration for locally produced foods with
a target market of employees at local businesses and
industries.
Establishment of a local food system in eastern Iowa, 2003,
#00-26
Abstract: Several strategies to enhance local food
production and marketing were employed by the Johnson County
(IA) Soil and Water Conservation District. Among them were a
pilot project on institutional buying practices, a directory
of local food products, planning of locally sourced
"All-Iowa meals," and other educational and outreach
activities.
Examining the potential for organic apple production -- the
Homestead Orchard Project, 2002, #99-22
Abstract: Organic orchard management is not new, however,
Midwest apple growers lack information and models on how to
make their operations work well. This project tests various
organic orchard management tools at an orchard operated by
people with developmental disabilities.
Field to Family Community Food Project, 1999, #98-75
Abstract: Community-supported agriculture (CSA) is a local
food system in which farmers provide fresh food, fiber, and
related products directly to the consumers in their area.
The Field to Family Community Food Project began in 1997 and
was intended to support the Magic Beanstalk CSA project by
forming partnerships with other local organizations such as
churches, social service organizations, Iowa State
University, and other community groups.
Institutional and commercial food service buyers'
perceptions of benefits and obstacles to purchase of locally
grown and processed foods, 2003, #01-38
Abstract: The three-phase project investigated several
issues facing institutional and commercial food services
related to purchasing of locally grown and processed food.
An internship program to help institutional food buyers
develop links to local farms in northeast Iowa, 2005,
#01-A13
Abstract: Iowa college interns worked with the UNI
Local Food Project, food buyers, and farmers to improve
local food purchasing processes.
Local food connections: From farms to restaurant, 2004,
#02-29
Abstract: A new resource manual and an existing food
brokering project were supported by this grant to enhance
Iowa's local food systems.
Making the connection -- linking farms to HRIs, 2002, #00-67
Abstract: Iowa farmers interested in selling their products
locally wanted more information about the institutional-type
markets for these foods so they could determine how to work
with these markets.
Non-farmer's Guide to Agriculture (Polk County), 1999,
#98-57
Abstract: An educational program helped non-farmers better
understand agriculture through presentations and farm tours.
Approximately 850 people participated and reported that the
program was an enlightening, worthwhile experience. Two
focus groups were held to assess attitudes about land use
and quality of life issues in the Des Moines metro area.
Organic farming demonstration project -- eastern Iowa, 2002,
#99-21
Abstract: On-farm demonstration sites were developed in
Dubuque and Jackson County to show interested producers some
of the proven organic farming practices that are available.
Our rural supermarket: Locally grown foods project, 2002,
Special project
Abstract: Organizers in northwest Iowa wanted to encourage
production and purchase of local food in their area.
Rural regeneration through direct marketing of Audubon
County meats, 2000, #98-12
Abstract: Audubon County Family Farms direct-marketed their
farm products through the downtown farmers market in Des
Moines. In addition to selling their products, the farmers
encouraged dialogue with urban consumers through personal
interaction and educational activities.
Some alternatives for multiple use land management in
southern Iowa, 2004, #03-P1
Abstract: Information was
gathered by a conservation group to aid the Southern Iowa
Development and Conservation Authority in creative planning
for future land management.
Squaw Creek watershed social assessment: Values, beliefs,
and perceptions of water quality and landscape change, 2004,
#03-E1
Abstract: Selected residents of three central Iowa counties
were surveyed to determine their thoughts and opinions on
water quality issues in the Squaw Creek watershed basin.
Sustainability and community food systems in four Iowa
counties, 2004, #00-69
Abstract: Four Iowa counties (Benton, Marshall, Audubon and
Johnson) were studied to determine how local food systems
had developed, prospered, or struggled in the face of
challenges from globalization and industrialization.
Together in Tough Times, 2001, special project
Abstract: Four Iowa communities struggling with the changing
face of agriculture and subsequent economic woes were chosen
as the sites for community conversations about coping with
in difficult circumstances.
Youth and conservation methods, 2000, #99-58
Abstract: How to get young people interested in conservation
and environmental preservation is a concern for educators
and environmental groups. One possibility explored here was
to encourage students to speak with people who are carrying
out agricultural conservation practices and then try to
summarize these ideas and experiences on a video tape.
Agronomic and environmental soil testing
for phosphorus and threshold levels in soils, 2004,
#01-11
Abstract: Greater knowledge of soil phosphorus (P) is
needed to develop application recommendations for Iowa
farmers. This project provides more data on the topic by
addressing both agronomic and water quality issues.
Black walnut cultivar performance, 2004, #02-01
Abstract: Those interested in planting black walnuts
have lacked information about the best cultivars available
for planting in Iowa. This project initiated long-term
studies of several varieties of black walnut trees to
determine the best cultivars for Iowa growers.
Crop response to zinc as a micronutrient in Iowa,
2002, #00-04
Abstract: How does corn respond to application of zinc
fertilizer on various Iowa soils? How can zinc be applied
more effectively using new technology that spreads
fertilizer at varying rates? This project sought more
information on corn grain yield responses to zinc
applications within fields with varying soil
characteristics.
Development and implementation of cost-effective
fertilization and tillage management alternatives for
improving soil quality in corn-soybean rotations, 2001,
#98-36
Abstract: A variety of tillage and fertilization
treatments for corn were tested in research settings and on
producers' farms. Information generated would be used to
recommend applications of various crop nutrients in an
environmentally safe, cost-effective manner.
Development of dormancy breaking mechanisms in eastern
gamagrass, 2004, #01-19
Abstract: Eastern gamagrass would be an excellent
pasture grass, but producers have difficulty establishing a
stand. Various techniques for solving the dormancy problems
in eastern gamagrass were investigated and analyzed.
Development of switchgrass as a viable agricultural
commodity for farmers in southern Iowa, 2002, #98-14
Abstract: The Chariton Valley Biomass project involves
transforming switchgrass into a cash energy crop for
southern Iowa farmers. The Leopold Center provided funding
for communication and education activities connected with
the project.
Development of switchgrass as a viable agricultural
commodity for farmers in southern Iowa, 2004, #02-26
Abstract: The Chariton Valley Biomass Project was
aided by the Leopold Center's contribution to its education
and outreach activities. The project aimed to inform Iowans
about the potential for growing switchgrass for biomass
energy purposes.
Eastern gamagrass seed dormancy, 2000, #97-30
Abstract: Eastern gamagrass has considerable value as a
forage source and conservation aid, but can be very
difficult to establish because its seed does not germinate
easily, even with all the necessary environmental factors
present. Understanding seed dormancy in eastern gamagrass is
the major objective of this work.
Economic analysis of variable rate management for corn
and soybean systems, 2000, #97-48
Abstract: What is the potential payoff for farmers
moving from traditional whole-field management or integrated
crop management to precision farming? Using computer models,
the investigators sought to analyze how inputs can be
applied at optimal rates variably across a field in order to
match inputs with crop needs. Over the long term, only
modest increases were shown in gross returns from these
practices. However, gross returns for individual years can
be substantial.
Establishment and persistence of legumes on sites varying
in aspect, landscape position, and soil type, 2000,
#97-29
Abstract: Most Iowa pastures display only a small
variety of plant species, resulting in large seasonal and
annual variations in pasture productivity. This project
evaluated the causes for these variations in cool-season
grass pastures and considered ways to improve diversity of
legume species used for grazing.
Evaluation of forage plants collected from permanent
pastures throughout Iowa, 2001, 98-69
Abstract: There has been no collection of forage plant
germplasm in Iowa for more than 50 years. Researchers
collected and evaluated several types of plants in Iowa
pastures to see if they had traits associated with grazing
tolerance or, on a larger scale, with long-term pasture
persistence..
Evaluation of interactions within a shelterbelt ecosystem,
1997, #93-04
Abstract: A tree shelterbelt comprised of four rows of
hybrid poplars was established near Ogden, Iowa, in 1992 to
evaluate shelterbelt characteristics and impacts on soil
water content and crop growth and yield. Major emphasis was
on testing corn and soybeans. The first three years saw few
effects from the shelterbelt, and data from these years will
be used to develop a baseline for future measurements. In
the fourth and fifth years, corn yield patterns suggested
that the shelterbelt increases yields in the zone leeward
from the shelterbelt. Soybeans have not shown a response to
presence of the shelterbelt.
Evaluation of interactions within a shelterbelt
agroecosystem, 2000, #97-53
Abstract: Yield data for corn (eight years) and soybeans
(six years) were collected and analyzed to determine the
impacts of a hybrid poplar shelterbelt on crop production on
a central Iowa farm.
Evaluation of organic soil amendments for certified
organic vegetable and herb production, 2002, #99-50
Abstract: Responding to increased interest from the
state's organic farmers, this study analyzed some of the
natural soil amendment/fertilizer products used in the
production of organic vegetables and herbs. Using both
on-farm and university research sites, yield and
post-harvest quality of peppers, three herbs, and broccoli
were assessed.
Evaluation of three cropping systems grown under the
influence of a shelterbelt, 2001, #98-26
Abstract: Shelterbelts have the potential to influence
growth and yield from various cropping systems. On-farm
tests were conducted to determine how shelterbelts
interacted with corn, corn/soybean, and strip intercropping
Feasibility of organic soybean production following CRP
land, 2002, #99-49
Abstract: What is the potential for organic crops on
land returning to production after being idled in a
conservation program? On-farm demonstrations explored the
effects of different tillage methods, weed control efforts,
and cropping systems on organic soybean growth.
Genetic diversity and performance of oat variety blends,
2001, #00-50
Abstract: Iowa farmers who typically use a two-crop
(corn/soybean) rotation could benefit from adding a third
crop to reduce weed and pathogen problems, while improving
soil quality. Oat is one of the most common alternative crop
in Iowa, but has been hindered by unreliable yields. The
potential performance increase in oat variety blends over
pure-live varieties was investigated.
Improving farm nutrient management by optimizing organic
matter inputs and root health, 2005, #02-41
Abstract: Farmer cooperators conducted strip trials
to help investigators create a nutrient and organic matter
budgeting system that offered whole farm management
guidelines to tighten nitrogen budgets for corn. Corn root
health also was analyzed.
Improving productivity of warm-season pastures by
interseeding legumes, 2004, #01-35
Abstract: The dynamics of warm-season grass and legume
plant communities are affected by grazing landscape and soil
type. This project explored how these factors could be
managed by western Iowa farmers to successfully establish
higher-quality summer pastures comprised of warm-season
grass/legume mixtures.
Improving tree establishment with forage crops, 2002,
#99-85
Abstract: Weed competition and economics are two common
barriers to Iowa farmers' investing in tree plantings. This
project examined seven weed control strategies and
investigated productivity of small grain/forage combinations
raised with trees in an effort to suggest management options
that would encourage tree planting in the state.
Iowa location of pawpaw regional trials, 2003, #00-20
Abstract: The goal of this initial three-year project
was to establish the pawpaw trees and bring them to fruiting
stage. This was part of a long-term effort to evaluate the
potential for an Iowa pawpaw tree fruit crop.
Local ecotype prairie seed -- an alternative agricultural
product for increasing the viability of smaller farming
operations, 2003, #99-45
Abstract: What is the potential for a "prairie truck
farm" in Iowa? Investigators tried to determine if it was
feasible to establish diverse production plots around the
state, with seeds being collected and produced locally, and
used as an alternative crop for farmers.
A simple method to increase alfalfa yields in the
establishment year, 2001, #00-47
Abstract: Any practice that would improve alfalfa's
profitability could increase its use by producers. The
method tested in this study -- mixing seed of non-dormant and
dormant cultivars at planting -- is simple, and could improve
traditionally poor yields during the establishment year.
Small grain and annual forage legume intercrops for Iowa,
2001, #98-68
Abstract: Current cropping practices in Iowa have
reduced diversity in crop production to predominantly corn
and soybean. Low prices, weed and pest control problems, and
erosion have plagued these monoculture crop systems. Small
grains and forages represent potentially viable alternative
crops to corn and soybean in Iowa. Producers could opt for
an annual intercrop that provides grain and forage without
taking land out of corn and soybean for more than one year.
This project tested the possibilities for combining small
grains with a forage crop for a one-year intercrop.
Soil quality, yield stability, and economic attributes of
alternative crop rotations, 2001, #98-05
Abstract: Three long-term rotational crop studies in
Iowa and one in Wisconsin were examined for conclusive
evidence of rotational effects on soil quality. Long-term
yield data also were evaluated to determine if there was a
quantifiable relationship between soil quality and yield or
yield stability.
Sustainable grape production for the reestablishment of
Iowa’s grape industry, 2005, #02-46
Abstract: Reviving the grape industry in Iowa
requires development of improved sustainable production
systems. This project used research, demonstration, and
information transfer to educate and assist new and
established Iowa grape growers.
Winter grazing of corn residues: Effects on soil
properties and subsequent crop yields from a corn-soybean
crop rotation, 2004, #00-35
Abstract: Corn residues could be a good resource for
winter cattle grazing. The study investigates whether winter
grazing causes soil compaction and yield reduction in crops
that are planted following grazing.
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Assessment of triticale varieties for swine
feeding performance and tolerance to late planting,
2007, #E27-2004
Abstract: Triticale holds potential as a
third grain crop in Iowa. This project studied
different cultivars to assess their suitability for
production and use as swine feed.
Devising a framework for implementing
cattle-grazing and fire as management tools on
grassland reserves in southern Iowa, 2007,
#E18-2006
Abstract: Grassland preservation practices
such as grazing and use of fire are
Economically optimal enterprise mix for Iowa
farms, 2006, #E1-2004
Abstract: FARMOR, a computer simulation
program developed by this project, will allow
producers to make calculations about the best mix of
enterprises for their unique farm operation.
Economically sustainable riparian
buffer to promote bank stability and reduce gully
erosion and phosphorus runoff in the Loess Hills,
2007, #E30-2002
Abstract: The project considered what types
and configurations of vegetative buffers might be
effective in slowing soil loss at a Loess Hills
site.
New!
Integrating hunting and grazing: Loess
Hills and south central Iowa on-farm management
experiences, 2008, # E2004-43
Abstract: The project intended to monitor
bird use of rotationally grazed pastures over two
summer growing seasons, but the investigator was
unable to complete the work.
Using the past to plan for the future:
Retrospective assessment of landscape and land use
change in the Clear Creek Watershed, 2007,
#E38-2004
Abstract: Using aerial photos and historical
records allowed researchers to create a compelling
picture of the changes in the Clear Creek watershed
since 1940.
New!
Whiterock Conservancy baseline data project,
2008, # ESP2006-04
Abstract: Baseline surveys of pasture
diversity and bird populations were conducted and
will be used to help inform conservation-based land
management decisions at the Whiterock Conservancy in
southwest Iowa.
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Biological control and sustainable
horticulture principles for Iowa's vocational agriculture
curriculum, 2001, #98-24
Abstract: Instructional materials on biological control
and sustainable horticulture principles were developed for
use by teachers and students in the vocational agriculture
programs in Iowa's high schools and community colleges.
Students received instruction on various alternative
horticultural production practices. Instructors received
biological control kits for their classroom use.
Closing the loop, expanding the circle: Educational
outreach for institutional food waste on small farms,
2002, Special project
Abstract: This project increased the awareness of summer
camp visitors about alternatives to using public landfill
facilities for disposing of food waste.
Everything you wanted to know about wildlife and
fisheries: A field day for agriculturists, 1998, #96-20
Abstract: Previous wildlife-related field days sponsored
by the Leopold Center and ISU Extension were successful, but
mainly attracted traditional members of the sustainable
agriculture and wildlife interest groups. This project
sought to move beyond those boundaries to reach agribusiness
and commodity groups that might not ordinarily be the
recipients of an environmentally focused message.
Iowa Master Conservationist Program, 2002, Special
project
Abstract: A county-level Master Conservationist Program
educated many Iowans about conservation and sustainability
in exchange for the participant volunteering both time and
expertise to their communities.
Statewide manure management education initiative,
2001, #98-51
Abstract: After manure management was identified as a
high priority issue for programming, ISU Extension launched
a statewide initiative that made education and
individualized assistance on manure nutrient management
available to crop and livestock producers in every Iowa
county. The initiative involved educational workshops for
producers as well as on-farm demonstrations and increased
publicity concerning the economic and environmental value of
managing manure nutrients for crop production.
Sustainable and Entrepreneurial Agriculture Program at
Marshalltown Community College, 2006, #MSP07-2004
Abstract: Marshalltown (Iowa) Community College used
a challenge grant from the Leopold Center to establish a
sustainable agriculture curriculum/training program.
Animal and plant responses for steers
grazing switchgrass and big bluestem pasture, 1997,
#93-06
Abstract: Native warm-season grasses can provide large
amounts of high-quality forage during the midsummer months.
Maximum potential benefits depend on management of the
entire cool- and warm-season grazing system. This study
compared two grazing systems for the warm-season pasture.
Fall-born steers grazed pastures of "Cave-in-Rock" switchgrass or
"Roundtree" big bluestem over three years
using either continuous or rotational grazing systems.
Pasture carrying time for switchgrass and bluestem pastures
and steer weight gain were considerably higher for the
rotational grazing program than for the continuous grazing
system.
Collection of forage crop germplasm throughout Iowa,
1998, #97-38
Abstract: A successful forage breeding program starts
with a supply of germplasm containing adequate genetic
diversity to serve as the foundation for better cultivars.
No collection of forage breeding materials unique to Iowa
has been done in 50 years. In this project, plants were
collected from 20 pastures throughout the state. The plants'
mere presence suggested that they had already survived the
drought, cold temperatures, and extensive grazing that occur
in Iowa, which made them good subjects for breeding
purposes.
Complementary grazing systems for beef cattle production,
2004, #00-06
Abstract: Pasture productivity in Iowa often is limited
by the low yield of cool-season grasses in the summer. This
project considers whether uneven seasonal distribution in
pastures could be improved by including species that perform
better under higher temperatures.
Demonstration of an annual forage crop integrated with
crop and livestock enterprises, 1998, #95-49
Abstract: Using a more diverse cropping system, such as
strip intercropping, to produce forages for feeding
livestock can create a more sustainable, environmentally
friendly farming system. Strip intercropping of corn,
soybeans, and oats underseeded with berseem clover was used
to demonstrate agronomic and environmental benefits of a
more varied cropping system. This system produces oatberseem
clover soilage (green-chop) that can be utilized to feed
beef cattle.
Demonstration and technology transfer to producers
implementing sustainable rotational grazing systems,
2003, #01-02
Abstract: All rotational grazing systems require fences,
water, and forages. This project used hands-on
demonstrations to show producers some of the options
available for each of these components of a successful
grazing system.
Determination of early summer pasture conditions to
optimize forage and calf productivity and profitability,
2000, #97-20
Abstract: Forages can be valuable elements in a
sustainable production system. The date when animals are
first allowed to graze on pastures can impact the quality
and amount of forages available. This study explored various
factors that influence successful grazing.
Education-demonstration for intensive grazing and forage
management on highly erodible land, 1998, #96-41
Abstract: The wise use of highly erodible marginal land
is an important economic and environmental issue. Rotational
grazing for livestock is one method of land use improvement
suitable for HEL or other cropland that needs to be
converted to pasture. Using an existing demonstration farm
in Adams County, Iowa various paddock arrangements and
forage varieties were tested to help farmers devise
appropriate sustainable grazing systems.
Evaluating the adaptability of forage species and
varieties in northwest Iowa, 2005, #99-41
Abstract: Iowa’s harsh climate can make forage
establishment and maintenance difficult. This project
examined which forages might be best adapted to growth and
survival in northwest Iowa.
Grass-based dairy and dairy networks/promotions,
2003, #01-32
Abstract: What is the potential for grass-based dairying
in southern Iowa? How can we help beginning farmers and
others enter the dairying profession? Fifteen dairy
operations participated in a study to answer these
questions.
Incorporating grassland agriculture into row crop
production systems, 2005, #02-39
Abstract: This project explored ways to make
grassland agriculture a more appealing option for Iowa
producers who have marginal soils on their farms.
Intensive rotational grazing management
education-demonstration for Northeast Iowa dairy and beef
producers, 1998, #96-38
Abstract: Hay is a major crop for northeast Iowa cattle
producers. The difficulty and cost of growing and harvesting
quality hay and the continued pressure to reduce costs has
stimulated producer interest in management intensive grazing
systems. This project offered Iowa farmers extensive,
hands-on information and experience with intensive grazing
techniques.
Iowa Lakes Controlled Grazing, Inc. (ILCG) project,
2000, #95-13
Abstract: Through the efforts of the Iowa Lakes
Controlled Grazing, Inc. (ILCG) project, producers in four
northwest Iowa counties learned more about how management
intensive grazing and other alternative practices could be
used to increase their profits and preserve environmental
quality.
Iowa Pasture Management Guide, 1998, #96-72
Abstract: While there is a great deal of information
available on pasture management and utilization, there is no
one existing publication that could serve as a comprehensive
source of advice on the subject for Iowa farmers. Using
feedback from a focus group, a handbook to aid Iowa farmers
in pasture management has been prepared.
Biologically intensive pest management:
Iowa apple growers take the next step toward sustainability,
2001, #98-45
Abstract: Iowa growers have made strides in decreasing
chemical use in their apple production. However, demands of
the marketplace and regulatory agencies mean that growers
need to investigate ways to further reduce pesticide use,
potentially through biologically intensive pest management.
Building an Integrated Pest Management network in
cooperation with Iowa fruit and vegetable growers, 1997,
#92-47
Abstract: Fifty-one commercial growers of apples,
strawberries, tomatoes, and/or watermelons cooperated with
ISU Extension specialists in a three-year program to
evaluate Integrated Pest Management (IPM) control
techniques. Scouts and growers monitored pest infestations
and diseases such as codling moth on apples, tarnished plant
bugs on strawberries, and anthracnose on tomatoes and
melons. Growers sprayed only when pest populations or
disease risk values reached levels capable of doing crop
damage. Weather conditions were monitored for periods
favorable to pest outbreaks. On average, ISU researchers
estimate that growers applied from 25 to 55 percent fewer
insecticides and fungicide sprays (depending on the year and
the particular pest) by suing IPM methods in comparison to
their usual practices. For the growers, this meant decreased
input costs, a better bottom line, and enhanced
competitiveness.
Supporting Leopold Center IPM research through on-farm
trials and demonstrations, 1997, #95-39
Abstract: The efforts of the Leopold Center Integrated
Pest Management (IPM) Issue Team were augmented and advanced
through collaboration with the Practical Farmers of Iowa (PFI).
Using a program of on-farm research, demonstrations, and
farm field days, the project evaluated two methods that
refine IPM by providing biological control options and/or
more precise information about effective (as opposed to
gross) pest infestation levels. Biological controls of
alfalfa weevil and European corn borer were tested.
Transferring biological control technology to Iowa
strawberry growers, 2001, #96-77
Abstract: Growers receive nearly $3.5 million gross
income from strawberry production in Iowa. Substitution of
environmentally friendly, natural products and biological
controls for the current chemical-intensive growing
approaches will be critical to the expansion of strawberry
production in Iowa.
Alternative farrowing systems during cold
weather, 2006, #E03-2003
Abstract: The project investigators studied the
performance of alternative farrowing systems during cold
weather. These systems have the potential to expand the
niche pork markets in Iowa by making larger supplies of
marketable pork available in the summer months.
Alternative swine cost of production
project, 2004, #PNMWG5-02
Abstract: Pork producers interested in niche market
production need information on the costs of alternative
operations. Records from current niche producers were
collected and analyzed.
Beef cattle feeding in deep-bedded hoop barns, 2006,
#SP1-2004
Abstract: A low-cost, versatile bedded hoop barn for
feeding cattle may help alleviate runoff and other
environmental problems associated with open beef cattle
feedlots while maintaining animal performance.
Botanicals as part of an integrated value-added pork
production system, 1999, #98-52
Abstract: Selected herbs are known to naturally possess
antibacterial and other characteristics that could be useful
in animal protein production. Inclusion of these herbs in
animal feeds as alternative growth promotion and efficiency
stimulants may be able to address some of the current
concerns about the possibility of significant
antibiotic-resistant bacteria development that stems from
drugs currently used at sub-therapeutic levels in animal
production. Several herbs were tested for their ability to
aid animal growth rates and feed efficiency without giving
rise to antibiotic-resistant microbes.
Botanicals as part of an integrated value-added pork
production system, 2001, #00-37
Abstract: Some herbs are known to exhibit natural
antimicrobial activity and other characteristics that could
be useful in value-added animal production. Four botanical
products were tested for possible inclusion in swine feeds
as alternatives to synthetic chemotherapeutic and
\antimicrobial agents.
Chariton Valley Beef Initiative, 2002, #99-71
Abstract: Chariton Valley Beef Industry Initiative (CVB)
was started by producers seeking to improve their herd
management skills and simultaneously look into value- added
markets. Individualized computer analysis of past carcass
data is a key product supplied to CVB members.
Coupling swine technologies: swine system options,
2000, #97-31
Abstract: Three major alternative swine production
systems were researched and demonstrated at Iowa State
University research farms: hoop structures at Allee Farm
near Newell and Rhodes Farm near Rhodes, outdoor farrowing
at the Western Farm near Castana, and a deep-bedded Swedish
system at the Armstrong Farm near Lewis.
Dairy manure quantification and characterization in
grazing systems, 2001, #99-16
Abstract: Information is needed on the amount and
nutrient concentrations of manure generated by lactating
dairy cows that are managed in an intensive grazing system.
Currently the most frequently cited data sources for these
are 20-year old ASAE tables.
These data are important because manure nutrient figures are
used to determine the maximum animal stocking density that
will safeguard against nutrient runoff or degradation of
water quality by concentrated nutrients.
Demonstration of a Swedish sustainable swine production
system in Iowa, 1998, #95-72
Abstract: Many Iowa hog farmers are interested in
alternative systems for producing pigs. This project
demonstrated an approach to profitable pork production
designed to be compatible with the pigs' natural behaviors.
It has been used successfully in Sweden, and was
transplanted to Iowa with generally favorable results.
Demonstration of swine carcass composting as part of an
environmentally friendly production system, 2002, #00-33
Abstract: Carcass composting is not a new technology,
but it has excellent potential to be part of a swine
production system that uses solid bedding.
Evaluation of diatomaceous earth as an adjunct to sheep
parasite control in organic farming, 1997, #95-34
Abstract: Diatomaceous earth (DE) has been touted as a
natural and effective way to control gastrointestinal (GI)
parasites in sheep. In this study, grazing lambs were fed DE
at 5 and 10 percent of a supplemental ration for periods
from 66 to 117 days. Weight gains, hemoglobin, packed cell
volume, fecal egg/gram counts, and abomasal GI larval counts
were not different in controls vs. DE-fed lambs. DE by
itself was not shown to be an effective parasite control
agent, but could be used as part of a parasite control
program.
Evaluation of the nitrogen and energy utilization of
legume forages by growing cattle and sheep, 1999, #98-09
Abstract: Forages can help maintain or enhance
environmental quality by preventing soil erosion and
increasing soil nitrogen so that less nitrogen fertilizer is
needed. However, because the protein in most legume forages
is highly degraded in the rumen of cattle or sheep,
utilization of forage protein may be inefficient. This
research project looked at the possibilities for using
berseem clover and kura clover to increase feed efficiency
of growing animals and lactating dairy cows.
Growing dairy heifers in southwest Iowa, 2002, #99-11
Abstract: Southwest Iowa farmers were looking for a
farming enterprise to add value to their forage and grain
production and use their labor. The original plan was to
grow dairy heifers on pasture in the summer, sell them in
the fall, and keep track of the economics of a dairy heifer
system.
Livestock and the environment in Sioux County, 2003,
#00-36
Abstract: Why don't livestock producers make the best
use of their manure resources? How can they do a better job?
Focus groups and a countywide survey in Iowa's Sioux County,
a major livestock producing area, were used to answer this
question.
Winter grazing of stockpiled grass-legume forages to
reduce costs of developing beef heifers, 2006, #E35-2004
Abstract: Livestock producers looking for ways to cut
costs may find that winter grazing offers a viable option.
Analyzing local food systems for success:
Naming and graphing entrepreneurial and community based
agriculture linkages, 2007, #M04-2004
Abstract: The project sought to document food- and
community-related information available in southwest Iowa
counties and to connect various sectors that might work
together to add value to local foods and increase food
commerce.
New! Assessing needs and
fostering agricultural entrepreneurship among immigrants in
several Iowa communities, 2008, # M2006-07
Abstract: Two Iowa communities learn about opportunities
to support local immigrant populations with an interest in
farming enterprises.
Assessing the market potential for goat meat among recent
immigrants to Siouxland, 2007, #M33-2005
Abstract: The niche market for goat meat is expanding
with Iowa’s immigrant population. Researchers consider how
farmers can tap into that market.
Assessing the market potential of
specialty forest products in local food systems, 2005,
#04-M08A
Abstract: Non-timber specialty forest products show
potential for farmers hoping to diversify their operations.
This project and survey evaluated the interest in and
obstacles to the production and marketing of these crops.
New!
Bridging the gap: What does it take to bring small- and
medium-sized producers and retail and foodservice
distributors together? 2008, # M2006-05
Abstract: Bringing farmers and food distributors
together to find common ground could accelerate the spread
of locally grown food throughout the food chain.
New! Business organization and
coordination in niche hog marketing, 2008, # M2004-22
Abstract: Niche hog marketing enterprises face a unique
set of challenges. This study considered five critical
management issues, and analyzed the workings of two niche
pork markets in Iowa. Issues of market timing, product
quality, process verification, business organization, and
sharing of returns are discussed.
Case studies and benchmark transaction
costs for select food products, 2007, #M02-2006
Abstract: Producer-distributors can use the information
in this set of case studies to identify commercial
advantages and disadvantages that can affect the success of
their enterprises.
New! Cash flow and product
profitability analysis and improvement for small meat
processors, 2008, # M2007-16
Abstract: Education on financial management techniques,
individual assistance, and valuable information was provided
to several of Iowa’s small meat processing firms.
Co-location of industries with small
livestock slaughter facilities in the Midwest, 2004,
#M03-04
Abstract: This November 2003 study researched the
possibilities for Iowa producers who are interested in
specialized smaller-scale slaughter facilities and their
potential, both for co-products and related industries.
Company environmental and societal positions as sources
of competitive advantage: Implications for sustainable
agriculture producers, 2005, #04-M05
Abstract: Use of an environmental positioning
strategy can help small-scale agricultural producers present
their products to consumers in a more appealing manner.
Company environmental and societal positions as sources of
competitive advantage: Consumer- and retailer-level effects,
2006, #M07-2005
Abstract: Smaller producers need to differentiate
themselves from larger operations to ensure their economic
survival. One way to do this is to market their products as
being environmentally friendly and/or socially responsible.
Consumer perceptions of place-based foods, food chain profit
distribution, and family farms, 2006, #MSP05-2004
Abstract: Consumers were asked for their views on a
variety of alternative marketing scenarios for food
products; the scenario responses offer guidance for
producers seeking new ways to position their products.
New! Determining the methods
for measuring the economic and fiscal impacts associated
with organic crop conversion in Iowa, 2008, # M2006-12
Abstract: This study examines the economic benefits and
risks that increased organic crop production can bring to a
community or region.
Developing an integrated research and outreach program for
niche pork, 2006, #M28-2005
Abstract The project goal was to help farmers with
production challenges involved in raising niche hogs (i.e.,
certified organic and antibiotic-free). It focused on
developing and securing funds for an integrated research and
outreach program to address swine production challenges. A
second strategy was to continue to provide support for the
Pork Niche Market Working Group.
New!
Development of a niche agriculture small business money map
and process to disseminate information, 2008, # M2007-06
Abstract: A key constraint for small businesses is the
dearth of operating capital. The situation is especially
critical for niche market agricultural enterprises. This
project identified barriers in access to capital for niche
marketers.
Development of a rural wine culture in
Iowa, 2007, #M14-2005
Abstract: The project documents the process of
creating a geographically-based identity for grapes and wine
production in eastern Iowa.
Documenting the costs and benefits of whole animal local
meat purchases by three northeast Iowa institutions,
2005, #04-M06
Abstract: Results from this project are aimed at
facilitating the purchase of locally grown livestock by
institutional buyers.
Economic analysis of current and potential Muscatine melon
market, 2006, MSP09-2004
Abstract: The Muscatine melon traditionally has been one
of Iowa’s best known produce items. As the number of acres
and producers decline, melon producers are looking for ways
to make their product a more attractive economic production
option, and place-based marketing may be helpful. Melon
producers, however, need to ask themselves if they are
willing to cooperatively develop and market a place-based
product in order to achieve higher prices and profitability.
Economic viability of local food
marketing for restaurant operations and growers/producers in
Iowa, 2007, #M17-2005
Abstract: The study considers what economic costs and
benefits, and non-economic factors would influence
restaurants and producers/growers to purchase/sell locally
grown/produced foods.
Evaluating on-farm food handling practices and
microbiological quality of locally grown produce and eggs,
2005, #04-01 MSP
Abstract: Food safety practices used on the farm by Iowa
fruit and vegetable and fresh shell egg producers were
examined. Recommendations for improvements were suggested at
a workshop at the end of the project and several extension
bulletins were published.
Grinnell Area Local Food System Initiative, 2006,
#M01-2003
Abstract: This project provides a model for formation of
a consortium of organizations to encourage and oversee the
development of a local food system based upon sustainable
farming practices.
New! Growing Farm to ISU: The
first five months, 2008, # MSP2007-01
Abstract: Working together, ISU Dining and local
producers seek to improve communications and sales of local
food products.
Growing your small market farm business planning program,
2005, #04-MSP6
Abstract: This business planning program offered
guidance and advice to aspiring and existing specialty farm
business people to create their own specialty farm business
plan.
New! Growing your small market
farm business planning program, 2008, # M2005-19
Abstract: Small farm business enterprises receive
technical advice and planning assistance.
Identification of plant residue with commercial potential as
natural dyestuffs, 2005, #03-M6
Abstract: The project explored whether plants grown by
farmers’ market producers could be used successfully as
natural dyes for textile making. A variety of plants and
dyestuffs were investigated.
New! Investigation of the
economic feasibility of pasture-based dairy operations in
northwest Iowa, 2008, # M2006-09
Abstract: Starting a dairy operation can be a feasible
option for beginning farmers. This project explored what
would make pasture-based or conventional dairying profitable
for interested producers.
Johnson County Food Education Program, 2004, #M03-05
Abstract: If consumers are better informed about access
to local foods as well as ways to prepare these foods, they
may be more likely to seek out locally produced food.
Let the vineyards be fruitful: A study of the potential
market for Iowa grape juice, 2004, #M03-03
Abstract: As grape production in Iowa increases, growers
are looking for new markets. This study considers the buying
potential for locally grown and processed grape juice.
Life in Iowa Homecoming Institute,
2007, #M02-2003
Abstract: College students were immersed in Iowa
community life for ten weeks each summer. They worked with
mentors to complete internships and community service
projects.
Local food capacity in north central Iowa: Nutritional
need, economic strategy, 2005, #04-M21
Abstract: The Wright County Here’s to Our Health
Committee sought to expand local food activity in their
area. This project offered information and support for added
depth and breadth in the promotion of local food production
and consumption.
Market analysis of alternative crop production in Iowa,
2005, #04-M09
Abstract: A spreadsheet was created to provide
producers, distributors, and marketers with more information
about county-level supplies of local food products. See the
Marketing Initiative section of the Center’s web site (www.leopold.iastate.edu/research/marketing,htm
) for more information.
Market Maker for Iowa, 2007,
#M29-2005
Abstract: Use of a web-based program can help Iowa
producers pick and choose the best national markets for
their products.
New! New
food entrepreneurs: Value added enterprises for farm
profitability, facilitating understanding between producers,
processors and policymakers, 2008, # M2006-23
Abstract: This study researched the challenges and
opportunities to improving Iowa’s small food processing
sector.
New! Organic, natural and
grass-fed beef: Profitability and constraints to production
in the Midwestern United States, 2008, # M2005-30
Abstract: Farmers considering a transition from
conventional beef production to one of several alternative
production systems (such as organic, natural, or grass-fed)
need to be well informed about the possible challenges and
constraints of making this shift.
New! Pilot project to identify
and measure the relevant costs of production for sustainable
agriculture products, 2008, # M2004-05
Abstract: Accounting professionals sought to help
farmers understand costs of production for their products.
Planning grant for expansion of Food Alliance ecolabel
program in Iowa, 2005, #04-M14
Abstract: Food Alliance Midwest has established
certification programs in Minnesota and Wisconsin to
indicate when products were grown using environmentally and
socially responsible practices. This project considered how
to expand the certification process to Iowa.
New!
Potential to operate greenhouses and aquaculture in
conjunction with Iowa’s ethanol plants, 2008, # M2007-08
Abstract: Iowans looking for value-added enterprises to
pair with ethanol plants can consider greenhouses and
aquaculture operations as options.
The role of collaborative community
supported agriculture: Lessons from Iowa, 2007,
#M01-2005
Abstract: The project surveyed a variety of CSA
collaborators and participants to determine whether CSAs
could serve as business incubators for small-scale, rural
enterprise in Iowa.
Small and midsize Iowa farmer marketing, entrepreneurship
and business planning skills training program, 2007,
#M06-2005
Abstract: This highly customized training program was
targeted to small and midsize farmers as well as off-farm ag-related
(food/fiber) entrepreneurs in northeast Iowa.
Southwest Iowa Entrepreneurial Center: An achievable
product-to-market business model for small/niche ag
producers, 2006, #M13-2005
Abstract: The project takes the first steps to
determine if a home-meal replacement enterprise would be a
successful venture for small-scale producers in southwest
Iowa.
New! Strengthening the local
and regional food system in the Iowa Valley, 2008,
M2007-17
Abstract: Local leaders, residents, and food
producers band together to form a collaborative food system
in the Iowa Valley region.
A study of place-based food tourism in northeast Iowa
communities, 2006, #MSP01-2005
Abstract: Food tourism festivals have the potential
to grow markets and add value to existing place-based food
products. The project profiles food tourism and documents
the potential in northeast Iowa for benefits to farmers and
communities.
Supply chain options for biobased businesses, 2005,
#04-M13
Abstract: This 65-page research paper investigates
and evaluates the supply chain structures currently being
used in biobased businesses, as well as presenting corollary
examples of supply chains in businesses of all types (in the
United States and abroad).
Supporting direct meat marketing in Iowa, 2006,
#M17-04
Abstract: This project helped farmers and processors
to identify a variety of constructive ways to make direct
meat marketing more successful and profitable. Tools
included farmer workshops, market surveys, and various
educational tools about marketing techniques.
A survey of commercially available
broilers originating from organic, free-range and
conventional production systems for cooked meat yields, meat
composition and relative value, 2007, #M01-2006
Abstract: The project analyzed meat from broilers
raised in three production systems to determine how they
differed in terms of cost, yield, and various chemical and
sensory qualities.
Sustainable agriculture, marketing, entrepreneurship, and
business planning skill, 2007, #M03-2005
Abstract: A southern Iowa community college developed
a multi-faceted agriculture education program to help
revitalize the area’s rural agricultural economy.
Sustaining agricultural producers through direct
marketing of processed foods, 2006, #02-16
Abstract: Farmers who want to grow specialty crops
need to cultivate different marketing skills. They also need
information about the profitability of producing raw foods
and processed products.
Taste of Place: Place-based foods in Iowa,
2007, #M02-2005
Abstract: During 2005, the Iowa Foodways Project:
Taste of Place researched, via surveys, interviews and
photography, Iowa-produced foods that have a connection to
place and heritage.
Taste of Place Project, Phase II: Outreach, 2007,
#M13-2006
Abstract: Information gathered in a 2005 Leopold
Center-funded project about special Iowa-based foods
receives wider dissemination on a web site containing facts,
photos, and interviews with the food producers.
Using contracts to expand produce market opportunities,
2007, #M18-2005
Abstract: Contracts and market agreements could help
local food producers manage the risk of increasing
production while guaranteeing supplies for potential
purchasers.
Web-based interactive decision model for determining
economic feasibility of growing grapes and establishing a
small winery for wine and grape juice, 2006, #M16-2004
Abstract: Farmers and entrepreneurs interested in
growing grapes and producing wine receive a realistic
picture of the process and what it takes to be successful by
using these web-based decision-making tools.
New!
Developing ecologically sound and profitable alternative
fertilizer and manure phosphorus management strategies,
2008, #E2004-29
Abstract: Revised guidelines for the Iowa State
University (ISU) phosphorus (P) recommendations and ISU P
management may be needed. This project utilized fertilizer
and poultry manure P and experiments at research farms and
producers’ fields with corn-soybean or alfalfa-corn
rotations to evaluate several P management practices and
provide new knowledge about P management.
Development of guidelines for application
of swine manure to optimize nitrogen management for corn,
1999, #96-10
Abstract: Results from on-farm trials were analyzed to
develop guidelines that will help farmers evaluate and
improve their manure-N management, including utilizing swine
manure as a cost-effective substitute for commercial
fertilizer. The experimental methods included use of the
late-spring test for soil nitrate and the end-of-season test
for cornstalk nitrate to measure N availability at each
research site.
Education based incentive program to enhance long-term
adoption of sustainable
nutrient/pest management--a demonstration with farmers in
northeast Iowa, 2000, #97-21
Abstract: The Nutrient and Pest Management Incentive (NPMI)
Education program used education to encourage producers to
adopt environmentally sound management practices.
Participants received small incentive payments to
participate in a three-year series of workshops that showed
them how to devise nutrient management plans for their own
farms.
Environmental impacts of the use of the use of poultry
manure on water quality, 2004, #99-68
Abstract: The significant expansion of the U.S. poultry
industry has led to questions about the effects of large
amounts of poultry manure on the surface and groundwater.
These are the final year's results of a field study on how
poultry manure application can affect water supplies.
Impacts of swine manure application and alternative
N-management practices on productivity, sustainability, and
water quality, 1998, #97-60
Abstract: In the fourth year of this ongoing project,
the effects of nine N-management practices under different
tillage and cropping systems were evaluated. Forty
experimental plots equipped with individual sumps and
subsurface drainage metering and monitoring devices were
used for the study. Overall results indicate that manure
application rates and methods can be successfully managed
for corn-soybean systems without damaging the water quality
if the appropriate amount of N from swine manure can be
applied.
Mahaska County livestock manure/crop nutrient management
demonstration project, 1998, #95-05
Abstract: The project was developed from the requests of
Mahaska County producers for information related to
management of their livestock systems. Through surveys,
sampling, and demonstrations, it was learned that there is a
continuing need for individualized consulting linking manure
and nutrient management. Producers also want more guidance
about residue management and consistency of manure nutrient
content.
Nitrogen conservation in swine manure composting -- land
application systems, 2001, #99-62
Abstract: The use of bedding in the popular hooped
houses for swine production generates large volumes of
manure that composts easily. However, composting results in
nutrient losses, especially for nitrogen, which then
diminish its value as a fertilizer. This study looks at
carbon and nitrogen dynamics in the composting process and
subsequent soil mineralization.
Optimizing solid manure application by improving
distribution, 2004, #01-24
Abstract: Improving the uniformity of manure
distribution may make it a more effective substitute for
commercial fertilizer and allow farmers to take proper
nutrient credit for the manure. Manure-spreading equipment
or application techniques may need to be modified to be more
efficient.
Optimizing swine hoop manure management of soil quality
and crop system performance, 2003, #00-42
Abstract: What is the best way to deal with manure from
hoop hog structures and other deep-bedding systems? This
study offers agronomic and economic data to help farmers
make a sound manure management decision.
Reducing anhydrous ammonia application by optimizing
distribution, 2003, #00-34
Abstract: Anhydrous ammonia is one of the most popular
ways to fertilize U.S. crops. As it has risen in cost,
farmers and researchers have been seeking more efficient
ways to apply this nitrogen fertilizer.
Socio-technical and environmental dimensions of swine
manure management decisions, 2001, #99-69
Abstract: Once strictly a farm management concern,
manure management is now a matter of state and societal
interest. This qualitative study examines why and how
farmers in two Iowa watersheds make decisions about manure
management for their operations. Farmers interviewed
explained the motives, logic, opportunities, and constraints
that guide their use of particular management practices.
Soil amendment effects on crop-weed interactions, 2003,
#00-11
Abstract: The used bedding from hooped hog production
structures can be composted and spread on farm fields as a
soil amendment. Researchers studied how this composted
material affects crop yields, weed growth, and soil
components.
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Biocontrol of purple loosestrife by two
host-specific European leaf-feeding beetles in Iowa wetlands,
2000, #97-41
Abstract: Can the persistent purple loosestrife plant be
kept in check by environmentally safe methods? This project
tested the use of two kinds of Galerucella insects as
biocontrol agents to combat the spread of purple loosestrife
in Iowa wetlands.
Biocontrol of Sclerotinia stem rot in soybeans
with Sporidesmium sclerotivorum, 1999, #96-31
Abstract: Sclerotinia stem rot of soybeans (also
known as white mold) is caused by a soil-borne fungus and
has become a serious problem in northern Iowa. Another
fungus, Sporidesmium sclerotivorum, acts as a
parasite of the sclerotia and this research tested whether
this mycoparasite could act as an effective deterrent to the
soybean stem rot pathogen.
Biological control of the soybean aphid in organic and
sustainable soybean production systems, 2006, #E02-2003
Abstract: Predatory insects and parasitoids can be
used to suppress soybean aphid populations. This project
explores the development of bio-based insect lures to
enhance the efficacy of biological control of soybean
aphids.
Biological control of the tarnished plant bug in Iowa,
1997, #93-15
Abstract: TPB, the tarnished plant bug, attacks
strawberries in Iowa and the Midwest. The egg parasitoid (Anaphes
iole) has been observed to parasitize TPB in several
crops in the western U.S., but its activities have not been
studied in strawberries in the Midwest. Under laboratory
conditions, it was determined that A. iole will
parasitize TPB eggs in strawberry stems. Releases of A.
iole females in large field cages containing low
densities of TPB eggs did not result in successful
parasitization.
Biologically intensive manipulation of foxtail seed banks
for enhanced mortality, 2002, #99-37
Abstract: Studies were conducted at several Iowa
locations to determine the fates and long-term carry-over of
giant foxtail in agricultural soil weed seed banks, and the
variability of these seed fates.
Biotic interference of biological control of purple
loosestrife (Lythrum salicaria), 2005, #01-A33
Abstract: Iowa State University has reared and
released two European leaf-feeding beetle species to control
purple loosestrife in Iowa wetlands. Expected reductions in
loosestrife have not occurred, and biotic mortality factors
may explain the failure of the beetles to curb the
loosestrife.
The cereal leaf beetle in Iowa oats: Research and
education program for biological control and sustainable
management practices, 1997, #93-16
Abstract: The cereal leaf beetle, a serious insect pest
of small grains, including oats, was detected in the eastern
half of Iowa in the early 1990s. Iowa's five leading
counties for oat production are located in northeastern
Iowa, and field surveys were conducted in this area to
document the levels of cereal leaf beetle infestations,
potential impact on production, and the presence of natural
enemies. Findings showed that current cereal leaf beetle
numbers are too low to cause economic damage and no
compelling need exists to establish a management program
aimed at this particular pest.
Development of alternative carriers for use of
Beauveria Bassiana in Ostrinia nubilalis
suppression on corn, 2001, #99-75
Abstract: The European corn borer (ECB) is a serious
pest of corn causing significant yield losses in the
Midwest. In continuous work on innovative control of the ECB
via an entomopathogenic fungus, this project evaluated
alternative carriers for delivery of Beauvaria bassiana
without increasing indigenous mycotoxins.
Ecological impact of herbicides associated with
transgenic soybeans on spider mites, 2002, #00-41
Abstract: How do RoundUp Ready soybeans affect the
growth of fungi that may keep down the populations of some
significant soybean pests? Experiments in the laboratory and
soybean fields explored this question.
Effects of thrips on strawberry production in Iowa,
2004, #02-47
Abstract: The presence of thrips (tiny insects) in
strawberry fields has been associated with undesirable
bronzing of the fruit. This study examines the links between
thrips and damage to Iowa strawberries.
Effects of transgenic Bacillus thuringiensis corn
on European corn borer natural enemies and non-target
Lepidopteran pests, 1997, #95-14
Abstract: Field corn, genetically engineered to produce
a protein derived from Bacillus thuringiensis, was
evaluated for its effects on larvae of black cutworm, stalk
borer, armyworm, and corn earworm. No Bt corn effects were
observed on larval survival, pupal weight, or days to adult
emergence for black cutworm or stalk borer. Armyworms reared
on Bt leaf extract were lighter-weight, delayed in
development, and showed diminished survival rates. Corn
earworm showed reduced survival and delays in development.
In field tests of Bt and non-Bt corn, there were no
differences between the two varieties in damage from black
cutworm. Stalk borer caused less leaf damage to Bt corn.
Armyworm and corn earworm did less harm to Bt corn leaves
than to non-Bt corn leaves, but corn earworm survived to
cause some damage to Bt corn ears.
Enhancement of agricultural weed control by manipulation
of the light environment, 1998, #96-80
Abstract: Studies suggest that emergence of weed
seedlings can be diminished by decreasing the exposure of
seeds to light during tillage. Field studies conducted near
Ames, Iowa, tested the effect of excluding light during
tillage on emergence of common weed species of central Iowa.
Plots were tilled either during the day, during the day with
implements covered, at night, or at night with implements
covered, and subsequent seed emergence was monitored. The
effect of brief exposure to light on germination of weed
seeds under controlled laboratory conditions was also
studied.
Evaluating sustainable, integrated management of
muskmelon diseases, weeds, and insect pests in partnership
with Iowa growers, 2004, #01-21
Abstract: Several ways to decrease grower reliance on
chemicals in muskmelon production were studied.
Evaluation of the impact of tillage/cropping systems on
soil microflora and weed seedbank predation, 1999,
#96-34
Abstract: Soil erosion and pesticide use are critical
issues in sustainable agriculture. With a view to decreasing
the amount of pesticides used for weed control, researchers
assessed the impact of tillage, cropping systems and weed
management regimes on seasonal and long-term weed and weed
seedbank population dynamics, especially in Conservation
Reserve Program land being returned to production.
Identification and characterization of the Rose Rosette
disease causal agent, 1999, #98-33
Abstract: Rose rosette disease is lethal to multiflora
rose, a noxious weed occurring in pastureland in most of
Iowa. The potential use of rose rosette disease as a
biocontrol agent may be enhanced by grafting infected shoots
onto plants in established stands (i.e., augmentation).
However, questions arose about whether the disease could be
spread to ornamental roses. This study probes the identity
of the causal agent for the disease in hopes of determining
whether fears of transmission to ornamental roses were
valid.
Integrated pest management for wireworms, 1999,
#96-02
Abstract: With Iowa farmers returning land from the
Conservation Reserve Program and pasture use to crop
production, there is a need to deal with potential wireworm
infestations. Researchers sought to develop an early warning
system for locations "at risk" from wireworms, using
Geographical Information Systems technology. User-friendly
wireworm diagnostics for farmers were researched, along with
low-risk cropping alternatives to planting
insecticide-protected corn. Integrated Pest Management (IPM)
recommendations were generated that, if implemented, will
reduce unnecessary insecticide use in Iowa.
Integrating biologically rational strategies for control
of anthracnose fruit rot of strawberries, 2002, #99-64
Abstract: Anthracnose poses a serious threat to Iowa's
strawberry harvest. Several biologically friendly strategies
were tested for their effectiveness in controlling
anthracnose and positive impacts on yields.
New! Integration of natural
seed treatments in organic and open-pollinated corn systems,
2008, # E2004-28
Abstract: Essential oils from the aromatic plants,
such as thyme, oregano, cinnamon, clove, and savory, were
used to effectively control several common seed and soil
pathogens in the laboratory, and could be used as seed
treatments in corn. Results from field experiments showed
some oils protected the seeds from pathogens but not others.
Before these natural products can be widely adopted,
however, issues of volatility of the oils at ambient
temperature and appropriate application rate must be
addressed.
Investigation of the influence of tillage for management
of woolly cupgrass, 2005, #01-A56
Abstract: Woolly cupgrass is a difficult weed for
farmers to manage. Different methods of controlling woolly
cupgrass are tested for efficiency and sustainability.
Managing weeds by integrating smother plants, cover
crops, and alternate soil management, 2003, #99-03
Abstract: Any serious attempt to reduce pesticide use
must focus on weed management. This project looks at
practices to suppress weeds before crop planting, which will
improve the effectiveness of other weed control tactics.
Manipulation of predatory insects for enhanced biological
control of insect pests, 2001, #98-72
Abstract: Findings from this project provided the basis
for novel forms of biologically intensive pest suppression,
and encouraged the development of attractant-lures.
Preliminary studies demonstrated the efficient use of the
lures with a previously developed dispenser system.
Nontarget effects of Bt corn on pathogenic and toxigenic
fungi, 2002, #00-29
Abstract: There may be nontarget effects of transgenic
corn hybrids, positive and negative, on fungi that interact
with the targeted pests. What are the effects of Bt corn on
fungi that are associated with corn plants and their insect
pests?
Pheromone mating disruption: novel, non-toxic control of
the European corn borer, 1999, #97-19
Abstract: The European corn borer is one of the most
damaging insects in Iowa cornfields, causing more than $100
million in crop losses each year. In this project, the sex
attractant pheromone of the European corn borer was used to
obstruct the ability of the adult male moths to locate
females for mating. In the first year, efforts focused on
mating disruption in a small area, while in the second year
dispensers were deployed on a larger scale and evaluated for
efficacy.
Spring-seeded smother plants for weed control in corn and
soybeans, 1999, #96-03
Abstract: Smother plants are specialized cover crops
developed for their ability to suppress weeds and may
provide an alternative, non-chemical method of weed control.
The goal of this project was to define the characteristics
and mechanics of establishing a successful spring-seeded
smother plant system and to study and exploit the
competitive interactions among weeds, smother plants, and
the crop.
Use of intra-field alfalfa trap cropping for management
of the potato leafhopper, 2001, #98-43
Abstract: Potato leafhopper, a serious alfalfa pest, may
be controlled by early harvest or by application of
insecticide. Using natural enemies to battle the leafhopper
is another option. Selective cutting in alfalfa fields may
help curb leafhopper infestations by confining the pests in
one strip, which also may harbor a fungus that helps to
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New! Cooperation: A
survival strategy for small and medium-sized farms,
2008, P2003-16
Abstract: Farm input and supply cooperatives
are commonly used with success in U.S. agriculture.
There may be potential for similar cooperative
strategies to help small and medium-sized farmers
share machinery, labor, and expertise.
Farm Bill listening sessions, 2007, #P01-2006
Abstract: Rural residents share their
opinions about current farm policy and prospects for
the next federal Farm Bill in 2007.
Forming agricultural bargaining units for a
sustainable and equitable agriculture: The case of
the Organic Farmers Association for Relationship
Marketing (OFARM), 2006, #P10-2003
Abstract: This study examines the structure,
function, and perceived success of an organic
growers’ cooperative organization called OFARM.
Leveraging linkages to the Conservation Security
Program, 2006, #P61-2003
Abstract: The joint Iowa-Minnesota project
examined ways in which the newly created
Conservation Security Program (CSP) could be best
integrated with existing local resource management
efforts.
New! Local food,
local policy: A case study on engaging policy makers
in the development of their foodshed, 2008,
PSP2007-03
Abstract: The purpose of this project was to
conduct a series of meetings and programs to assess
the knowledge, understanding and capacity of Johnson
County (Iowa) policy makers to improve their local
food system and to provide opportunities for
stakeholders in the food system to interact and
learn.
Survey of Iowa organic farmers on the impact of
the National Organic Program, 2006, #P08-2003
Abstract: More than 400 Iowa organic farmers
were asked how the implementation of the
USDA-National Organic Program (NOP) rules in 2002
has affected their farming operations.
New!
Taking the next step – Building a platform for
performance-based stewardship payments,
2008, P2003-15
Abstract:
Policy makers need a way to measure environmental
results of farming practices, and incorporate those
outcomes into farm policy. Modeling tools can help,
but are not yet adequate to serve as
performance-based policy guidelines. Roundtables can
help diverse groups of people explore a new concept
like performance-based policies.
Women, land and legacy:
Agricultural policy for changing land ownership,
2007,
#P10-2006
Abstract: Iowa farm women offer their
opinions on how the next federal Farm Bill should be
crafted.
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Animal manure/municipal yard waste
composting project in Wright County, Iowa, 1998, #96-06
Abstract: Two of Iowa's waste disposal problems are
manure from livestock confinement facilities and yard waste.
Considered separately, they present special difficulties in
disposal, but when combined they may make a good compost
material suitable for use by gardeners and landscapers.
Constructed wetlands to reduce agricultural chemical
transport to water resources, 1999, #95-48
Abstract: This project was part of a larger five-year,
multi-phase research and demonstration effort to study water
quality and agricultural drainage wells (ADWs). The goal was
to evaluate the use of constructed wetlands for treatment of
subsurface drainage prior to release to groundwater through
ADWs and to develop design and operation criteria for these
treatment wetlands.
Demonstration of a an agroforestry system to minimize
pollution hazards from land application of treated municipal
sludge, 1998, #95-47
Abstract: Iowa has over 700 communities that generate
municipal biosolids by various treatment means. These
biosolids contain valuable nutrients. In this study,
municipal biosolids are applied to trees, perennial grasses,
and corn/soybean crops in an alley cropping (repeated tree
strips combined with crops) system. The goal is to produce
economical quantities of biomass and grains with reduced use
of fossil fuel-based fertilizers and minimal environmental
impacts.
Effect of tillage, crop rotation, and the innovative
nitrogen and pesticide management practices on productivity,
sustainability, and water quality, 1997, #93-14
Abstract: Better management practices can improve
nitrogen (N) uptake and possibly reduce nitrogen leaching to
groundwater. More efficient herbicide use can decrease or
eliminate the herbicide leaching losses to water sources. In
this project, the effects of seven nitrogen management
practices on water quality were evaluated after collecting
data from 40 experimental plots. Lower rates of N
application and strip and hay cropping systems helped
produce lower concentrations of NO3-N in the shallow
groundwater in comparison with the higher rate of N
application. Also, banding of herbicides has resulted in
lower herbicide losses to shallow groundwater. The use of
the late spring NO3-N test (LSNT) and strip cropping show a
great deal of promise to protect water quality.
Effective high-speed, high-residue row crop cultivation,
1997, #93-01
Abstract: Banding of herbicides linked with
mechanical cultivation has been touted as a way to decrease
dependence on chemical inputs in farming. Tests on a farm
near Boone, Iowa were used to determine the effects of
cultivator design and speed when combined with the banding
of chemicals to control weeds. Three cultivator styles, two
speeds, and two herbicide bands (19 and 38 cm.) were tested.
Results showed that faster cultivation speeds did not harm
weed control or crop yields. There was no difference between
yield in a broadcast treatment and that of a cultivator
treatment in conjunction with a wide band of herbicide when
disc hillers were used.
Environmental impacts of the use of poultry manure for
agricultural production systems, 2002, #99-68
Abstract: Iowa is among the top national producers of
poultry, with accompanying public concerns about the proper
disposal of poultry wastes and associated nonpoint source
pollution. This project investigated the effects of poultry
manure application on surface and groundwater quality.
Evaluating the effectiveness of restored wetlands for
reducing nutrient losses from agricultural watersheds,
2004, #01-60
Abstract: Scientists examined the effectiveness of
recent wetland restorations and land use conversions
(set-asides) for reducing nutrients in agricultural runoff
into the Iowa Great Lakes.
Fertilizer placement for ridge-till and no-till systems,
1998, #95-55
Abstract: Uncertainty about cost-effective methods of
broadcast vs. subsurface fertilizer application and soil
test interpretation for ridge-till and no-till systems may
be a major factor in the slow adoption or abandonment of
these systems by Iowa farmers. Broadcast fertilizer is
cheaper than banding, but seems inefficient because
fertilizers are not incorporated (no-till) or incorporated
too late (ridge-till) for plant needs. From a soil and water
quality perspective, the lack of incorporation of
fertilizers, especially phosphorus fertilizer, could hamper
system benefits in reducing nutrient losses in water runoff
because, although reduced, the runoff contains more soluble
nutrients.
Impacts of managed grazing on stream ecology and water
quality, 2006, #U19-2002
Abstract: The project measures and analyzes the
varying effects different grazing systems have on the
nutrients that appear in surface runoff.
Soil carbon quality and interactions in Iowa wetlands,
2003, #01-47
Abstract: Most of Iowa's wetlands have been drained,
tiled, and cultivated. This project looked at how carbon
sequestration has been affected and what might be done to
help improve the situation. Researchers collected GPS
coordinates of all the sites samples so that in the future
someone can return to the sites and determine the amount of
change in organic carbon or other properties that have
occurred over time.
Understanding the potential of phosphorus transport to
water resources via leaching, 2004, #02-40
Abstract: Improved management of phosphorus (P) from
both manure and fertilizer sources is important because of
surface water quality concerns. This study considers
possible P loss via leaching through the soil and examines
the dynamics of the adsorption/extraction process.
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