Evaluation of Nitrogen Decision Guides for Fertilizing Corn in Manitoba (Completed 2016)

Manitoba Agriculture nitrogen rate guidelines for corn were developed before 1990 and are out-of-date for current yield levels. Recently NDSU has released N rate guidelines for corn and a number of in-crop scouting measures can be used to assess sufficiency and need for more N. A study was initiated to evaluate a number of N decision guides for suitability in fertilizing corn in Manitoba.  Read the 2016 results here.