Validating Weather and Sensor-based N Prediction Models for Michigan Corn Production

IPNI-2015-USA-MI14

Justification: Due to seasonal and geographic variables impacting N cycling and corn growth, accurately predicting the economic optimum nitrogen rate (EONR) remains a challenge. One approach to provide N recommendations, referred to as MRTN (Maximum Return To Nitrogen), has been utilized by seven Midwestern states and provides N rate recommendations based on yield response to applied N while simultaneously accounting for fertilizer and grain prices. Read more


Year of initiation:2015
Year of completion:2017

Interpretive Summary

Differences in weather, particularly the timing and amount of rain, cause variability in corn response to nitrogen (N) fertilizer from one year to another. The regional Maximum Return to Nitrogen (MRTN) approach used in seven midwestern states provides recommendations based on documented yield responses to N, and allows for economic optimization, but does not adjust for year-specific weather events. This trial compared two year-specific approaches as alternatives to MRTN.

Differences in weather, particularly the timing and amount of rain, cause variability in corn response to nitrogen (N) fertilizer from one year to another. The regional Maximum Return to Nitrogen (MRTN) approach used in seven midwestern states provides recommendations based on documented yield responses to N, and allows for economic optimization, but does not adjust for year-specific weather events. This trial compared two year-specific approaches as alternatives to MRTN.

Differences in weather, particularly the timing and amount of rain, cause variability in corn response to N from one year to another. The regional Maximum Return to Nitrogen (MRTN) approach used in seven midwestern states provides recommendations based on documented yield responses to N, and allows for economic optimization, but does not adjust for year-specific weather events. This trial compared two year-specific approaches as alternatives to MRTN.

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Updates & Reports

2016

2016 Annual Report

2015

Project Description


Project Leader

Kurt Steinke, Michigan State University


Project Cooperators

Jeff Rutan, Michigan State Univ


IPNI Staff

T. Bruulsema


Location

Americas \ Northern America \ USA \ Michigan


Topics

maize

Nitrogen (N)