Effect of a rye cover crop and crop residue removal on corn nitrogen fertilization
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The Iowa State University Integrated Crop Management Conference is Iowa's premier crop production education event. No other program in Iowa brings together the diverse range of topics, slate of expert presenters and results of the latest University research.
The ICM Conference offers workshops focusing on the latest in crop production technology. Experts from Iowa and surrounding states will provide research updates and results in soil fertility, soil and water management, crop production and pest management.
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Abstract
Nitrogen (N) fertilizer applications are necessary for high yield corn production. However, water quality impairment related to N loss from corn and soybean fields continues to be a concern in Iowa, including meeting the USEPA nitrate (NO3-–N) drinking water standard, meeting proposed surface water quality nutrient criteria, and reducing N export to the Gulf of Mexico. Therefore, in-field production practices are needed to aid in reduction of NO3- leaching and movement to water systems.