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Enhancing Corn Yield in a Winter Cereal Rye Cover Cropping System
Farm Progress Reports
  • Swetabh Patel, Iowa State University
  • John Lundvall, Iowa State University
  • John Sawyer, Iowa State University
Number
RFR A1545
Publication Year
2016
Farm
Northwest and Allee Research and Demonstration Farms
Department
Agronomy
Fields
Crops and Soils
Areas
Corn
Abstract
Water quality impairment related to nitrogen (N) is a concern in Iowa, including meeting nitrate (NO3) drinking water standards and reducing the amount of N lost to the Gulf of Mexico. The Iowa Nutrient Reduction Strategy science assessment identified a rye cover crop as an important in-field management practice for reducing N and phosphorus (P) loss from fields (31% NO3-N and 29% P), and for reducing soil erosion. However, the science assessment identified a corn yield reduction of 6 percent when grown following a rye cover crop. Lower corn yield with use of a cover crop is unacceptable to farmers, so it is important to identify practices that minimize impact on corn establishment, early-season growth, and yield. The objective of this project was to study production practices that might enhance corn yield when grown in a winter cereal rye cover cropping system.
Citation Information
Swetabh Patel, John Lundvall and John Sawyer. "Enhancing Corn Yield in a Winter Cereal Rye Cover Cropping System" (2016)
Available at: http://works.bepress.com/john-sawyer/76/