Research Results

Soil, Agronomy and Carbon Sequestration

These projects have been supported by the Leopold Center. Click on a project name to read a printable summary of the key findings and other details. Full final reports are available from the Leopold Center by request.

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Project Name [PDF] Project ID
NEW Assessing soil quality impacts after conversion of marginal cropland to productive conservation One-page brief Full summary E2006-17
NEW Effects of biomass harvest on soil erosion One-page brief Full summary E2003-07
Developing ecologically sound and profitable alternative fertilizer and manure phosphorus management strategies   E2004-29
Understanding the potential of phosphorus transport to water resources via leaching   2002-40
Agronomic and environmental soil testing for phosphorus and threshold levels in soils   2001-11
Reducing anhydrous ammonia application by optimizing distribution   2000-34
Crop response to zinc as a micronutrient in Iowa   2000-04
Development and implementation of cost-effective fertilization and tillage management alternatives for improving soil quality in corn-soybean rotations   1998-36
Soil quality, yield stability and economic attributes of alternative crop rotations   1998-05
Education based incentive program to enhance long-term adoption of sustainable nutrient/pest management—a demonstration with farmers in northeast Iowa   1997-21
Fertilizer placement for ridge-till and no-till systems   1995-55
Interactions of VAM fungi, pesticides and crops   1992-48
Calibration of the late-spring soil nitrate test for manured soils   1992-28
Control of soil-borne pathogens with strategic use of animal manures   1990-65
Environmental effects of two contrasting farming systems in the Clarion-Nicollet-Webster soil association area   1990-14
Corn tissue tests for excess phosphorus and potassium   1991-45
Optimizing microbial associations to enhance nitrogen and potassium soil nutrient availability   1989-18
Operating procedures for use of the late-spring soil test by fertilizer dealers and consultants in Iowa   1989-28
Nitrate and herbicide leaching as affected by conservation tillage   1988-02
Changes in soil structural characteristics following establishment of prairie grass   1990-46
Demonstration of the unique slow-release characteristic of anhydrous ammonia fertilizer   1988-03
Effect of split N-fertilizer applications on drainage water quality and No3-N leaching   1988-07
Nitrogen management alternatives for ridge tillage corn   1988-17

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