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Weed population dynamics in ridge-tilled soybeans with and without herbicides |
1989-19 |
1993 |
|
Utilizing potential weed pressures to improve efficiency of weed management programs |
1990-20 |
1993 |
|
Utilizing an entomopathogenic fungus, Beauveria bassiana, for season-long suppression of larval populations of the European corn borer |
1988-12 |
1993 |
|
Sustainable weed control system using natural product allelochemicals to replace conventional herbicides in maize |
1989-27 |
1993 |
|
Storm Lake watershed demonstration project: planning phase |
1990-36 |
1993 |
|
Seed coating with environmentally acceptable polymers as an alternative to fungicide treatment of corn and soybeans |
1989-01 |
1993 |
|
Reducing pesticide use through environmental monitoring for pest protection |
1989-30 |
1993 |
|
Poplar tree buffer strips grown in riparian corridors for non-point source pollution control and biomass production |
1988-11_1990-75 |
1993 |
|
Pesticides and their major degradation products as potential contaminants of groundwater |
1990-39 |
1993 |
|
Optimizing microbial associations to enhance nitrogen and potassium soil nutrient availability |
1989-18 |
1993 |
|
Operating procedures for use of the late-spring soil test by fertilizer dealers and consultants in Iowa |
1989-28 |
1993 |
|
Multispecies toxicity tests using indigenous stream organisms: predicting pesticide effects in streams |
1990-37 |
1993 |
|
Incorporating environmental costs into economic injury levels |
1989-17 |
1993 |
|
Implementing nitrogen management to protect Iowa's groundwater |
1990-28 |
1993 |
|
Establishment of an experimental wetland research complex |
1989-40 |
1993 |
|
Efficient herbicide application to reduce environmental losses |
1989-22 |
1993 |
|
Effectiveness of vegetative filter strips |
1990-09 |
1993 |
|
Crops of ancient Iowa: Native plant use and farming systems |
1990-34 |
1993 |
|
Corn tissue tests for excess phosphorus and potassium |
1991-45 |
1993 |
|
Changes in soil structural characteristics following establishment of prairie grass |
1990-46 |
1993 |
|
Bird use of roadsides in an agricultural system |
1990-29 |
1993 |
|
Biological control of the strawberry leaf roller, Ancylis comptana, in Iowa |
1988-13 |
1993 |
|
A sustainable agriculture course delivered nationally via AG*SAT |
1989-41 |
1993 |
|
A developmental approach to the adoption of low-input farming practices |
1989-35 |
1993 |
|
"Full Circle Forestry" in southeast Iowa |
1989-34 |
1993 |