Impact of Phosphorus Fertilization Strategies on Efficiency of Nitrogen Use by Corn Rotated with Soybean

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Start Date: 2008

Principal Investigator: Daniel Kaiser

Organization: University of Minnesota, Department of Soil, Water and Climate 

Status: Complete

Background Information:

Recent research at the University of Minnesota has provided some evidence for a potential interaction between phosphorus fertilizer application and corn response to nitrogen. With higher prices making it critical for producers to maximize every dollar spent, potential interactions between these two key nutrients need to be studied in further detail.

The goal of this project was to utilize strip trial methodology to examine crop response, and then compare how different P management strategies may interact with the use of N in different cropping rotations. Utilization of strip trials allowed researchers to analyze different soils to determine if management strategies need to be adjusted based upon factors such as drainage or P sorption capacity, which determines the ability of soil to retain applied phosphorus.

Key Findings:

 

©2017 Agricultural Fertilizer Research and Education Council of Minnesota