Drainage Water Quality Impacts of Agricultural Management Practices: Effectof Manure Application Timing and Cover Crops

Date
2017-01-01
Authors
Soupir, Michelle
Andersen, Daniel
Sawyer, John
Dougherty, Brian
Pederson, Carl
Helmers, Matt
Soupir, Michelle
Andersen, Dan
Helmers, Matthew
Mallarino, Antonio
Sawyer, John
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Extension and Experiment Station PublicationsAgricultural and Biosystems Engineering
Abstract

A primary objective of this study is to evaluate the impact of various cropping and nutrient management systems on crop yields and drainage water quality. This progress report only includes the first-year corn grain yield results. Treatment comparisons include the impact of early fall vs. late fall vs. spring application of liquid swine manure, nitrification inhibitor with late fall swine manure application, cereal rye cover crop, and gypsum application. These comparisons will be conducted for multiple years and used to develop appropriate manure and nutrient management practices to minimize water contamination potential and enhance the use of swine manure as a nutrient resource.

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