Maintaining More Nitrogen in the Root Zone

By Eric Scherder
Field Scientist
Dow AgroSciences

eric-scherder

Over the past few years, there has been a lot of discussion about nutrient management plans or best management practices. At the same time, many universities across the Corn Belt have been discussing ways to improve nitrogen efficiency for corn production.

All of these aspects revolve around the 4R program approach promoted by The Fertilizer Institute. The program advocates for nitrogen management by promoting the right rate, right place, right source and right time.

In any of these approaches, a grower must know the production practice history of a field to determine an optimum nitrogen rate. A second aspect is monitoring what is going on during the year to account for nitrogen in the soil.

Data from our 2012-13 university trials, with liquid 28 percent or 32 percent UAN applied preemergence, help demonstrate the value of N-Serve® and Instinct ® II nitrogen stablizers on maintaining more nitrogen in the upper zero to 1 foot and 1 to 2 feet of the root zone early in the season to maximize yield.

The data from these 13 university trials demonstrate that Instinct nitrogen stabilizer, or Instinct II, keeps more nitrogen in the upper zero to 2 feet. That results in less nitrate (NO3-) that can be lost from the soil through leaching or denitrification.

From a corn grower’s perspective, maintaining more nitrogen in the upper root zone improves the opportunity to increase nitrogen efficiency and maximize yield opportunity. N-Serve and Instinct II are true nitrification inhibitors. Through grower strips trial testing and university testing, yield improvements can be measured each year, yet the yield increase ultimately is determined by how much nitrogen stress has been put on the corn crop.

Reducing leaching and denitrification also limits the amount of nitrogen that can escape into the groundwater or atmosphere and maximizes the yield potential of corn.

For more information on stabilizing nitrogen with Instinct II and N-Serve, visit NitrogenStabilizers.com.

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