Assessing the Impacts of Manure Timing and Innovative Cover Cropping Techniques on Crop Yield and Drainage Water Quality
- Philip Rockson (Iowa State University)
- Daniel S. Andersen (Iowa State University)
- D. Raj Raman (Iowa State University)
Abstract
Midwest U.S. cropping systems, mainly corn and soybean, have increased productivity but also environmental issues like nitrate leaching and soil nutrient depletion. The Iowa Nutrient Reduction Strategy aims to reduce nitrogen and phosphorus loads by 41% and 29%, respectively. Annual cover crops (e.g., cereal rye) and perennial groundcover (PGC) systems (e.g., Kentucky bluegrass (KBG) and Radix Hybrid bulbosa (RHb)) can enhance water quality and soil health by reducing nitrate leaching and erosion. This study evaluates the effects of these systems on water quality and crop yield, as well as the impact of manure application timing on nutrient loss.
How to Cite:
Rockson, P., Andersen, D. S. & Raman, D., (2025) “Assessing the Impacts of Manure Timing and Innovative Cover Cropping Techniques on Crop Yield and Drainage Water Quality”, Iowa State University Research and Demonstration Farms Progress Reports 2024(3), 26-28.
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