Start Date: 2014
Principal Investigator: Jeff Coulter
Organization: University of Minnesota, Department of Agronomy and Plant Genetics
Irrigated sands can produce high corn yields but pose economic and environmental challenges with regard to nitrogen (N) management. In 2014, research was established on an irrigated sand in central Minnesota near Becker to assess the potential of advanced fertilizer and crop management practices for increasing the yield and N use efficiency of continuous corn. This study compares two management systems: 1) current farmer practice; and 2) a high-yield system that is also environmentally responsible (ecological intensification). For each system, current university nutrient recommendations are being compared to advanced nutrient management. The performance of each management system and nutrient intensity regime is being evaluated with corn yield and nutrient uptake, N use efficiency, and soil fertility levels (both macro- and micronutrients). This study is a companion to the AFREC-funded high-yield rainfed continuous corn study established at Waseca, MN in 2013. Results from this study will be combined with those from 19 other locations in 9 countries as part of an International Plant Nutrition Institute project, allowing the results from Minnesota to be placed in both U.S. and global contexts.
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