The purpose of this study is to evaluate the economic optimum nitrogen rate (EONR), which is the rate of nitrogen that maximizes a crop’s profitability.

The spring of 2017 will be one to remember due to the above average rainfall that we experienced. While many farmers will remember how challenging it was to plant corn and soybeans, they may have overlooked the need to adjust their nitrogen (N) plan for their wheat crop. In a one pass program, like was tested at Beck’s IN PFR site, it is difficult to make such adjustments in-season. Consequently, it came as no surprise that the EONR was higher than normal for this area. Situations such as this favor the flexibility of split N applications, which can be fine-tuned and adjusted according to the conditions in-season.

2021 Iowa Corn Nitrogen Placement Study ANHYDROUS AMMONIA

Nitrogen Rate Study

2017 Indiana Wheat Nitrogen Rate Study

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