• Plant Health

The Scoop on Split Nitrogen Applications

Farm machinery in field

Split nitrogen applications typically entail corn crops receiving nitrogen at strategic and beneficial times throughout the growing season. But splitting nitrogen can take on a variety of forms. It could involve using a new product, applying a product you’ve used previously with new timing, or applying nitrogen with a stabilizer.

Here are some strategies to better inform your split nitrogen applications this season. 

Why split nitrogen?

Timing and access to the right equipment are two barriers to adopting split nitrogen applications. However, doing so opens the door to optimized yield potential by applying nitrogen when it will do the most good for the growing corn plant; and by using less nitrogen in a more targeted manner. 

To determine if split nitrogen applications are right for your fields, start by calling your local agronomist and asking two key questions:

  1. How much nitrogen does my crop need? Soil and tissue sampling, paired with the use in-season imagery can help identify areas in your field that appear deficient. Using response to nitrogen (RTN) scores by hybrid can also help determine which fields would benefit most from more intense nitrogen management.

  2. When does my crop need it? Ask your agronomist to take soil and/or tissue samples to determine what your corn plants need and when, and to add those test results to the R7® Field Forecasting Tool. Referencing a predictive model like the Field Forecasting Tool can give you a better picture of what your corn’s nitrogen needs are now, and when and where the next application of nitrogen or other nutrients may be beneficial to protect return on investment and yield potential.

By asking these two questions, you will be able to formulate a solid nitrogen management plan based on when your crops need it most but be prepared to make changes as needed. For example, environmental occurrences such as heavy rainfall could postpone your nitrogen applications, because rainfall could not only postpone your nitrogen application, but could also lead to leeching or runoff.

Maximize the effectiveness of a split nitrogen application

Once you and your agronomist decide to manage nitrogen using a split application, what’s the next step? It might be optimizing the performance of other nutrients that are vital to corn production, such as sulfur and zinc. Foliar applications of products like MAX-IN® Sulfur and MAX-IN® Zinc can help promote leaf and vascular growth in corn plants. Both products also contain CornSorb® technology, a patented crop-based adjuvant system that helps increase nutrient uptake. 

Reach out to your local retailer to learn more about in-season nitrogen management strategies.

All photos are either the property of WinField United or used with permission.

© 2020 WinField United. Important: Before use always read and follow label instructions. Crop performance is dependent on several factors many of which are beyond the control of WinField United, including without limitation, soil type, pest pressures, agronomic practices, and weather conditions. Growers are encouraged to consider data from multiple locations, over multiple years, and be mindful of how such agronomic conditions could impact results.

CornSorb®, MAX-IN®, R7® and WinField® are trademarks of WinField United.

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