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PFR Report: In-Season Nitrogen Management

Published on Wednesday, June 05, 2019

With prominent wet conditions this past fall and spring, switching to more in-season nitrogen management programs is a task many farmers are faced with this year. So what options are available for in-season nitrogen application? Beck’s Practical Farm Research (PFR)® team has past data on yield-gaining nitrogen management programs. One new product we are testing this year is PinnitMax™, a nitrogen stabilizer product.


The photo above shows 360 Yield Center’s Y-DROP® Application System being used on
Indiana PFR’s Nitrogen Application Study on V5 corn in 2018

Nitrogen Fertilizers

Common forms of nitrogen that can be applied in-season include UAN solutions, urea, and anhydrous ammonia.

PFR Data on Nitrogen Management

In 2016, nitrogen sealers became a PFR Proven™ system. Nitrogen sealers are a pair of coulters that are attached to a sidedress bar behind the knife. Urea stabilization is enhanced by using sealers when the soil is pulled over the trench that was created by the sidedress applicator’s knife. See the full data and results of this study by clicking here.

In 2018, we saw 3.4 Bu./A. yield advantage in our three-year, multi-location Corn Nitrogen Application Study when using 360 Yield Center’s Y-DROP® system in our multi-location data. 

To check out site-specific location data for the 360 Y-DROP system, click on the links below.

New PFR Studies and Products For 2019

This year, four new nitrogen management studies are being conducted on corn cropping systems in PFR! Two studies are being conducted on anhydrous ammonia: a Nitrogen Placement Study and a Depth and Timing Study. A Nitrogen Rate vs. Fungicide Study is set to compare Trivapro® with different rates of N applied in the UAN form at the R1 growth stage. The last new nitrogen study on corn for is an N Utilization Study that will measure hybrid response at 2x2, sidedress, and Y-DROP N application timings.

An “old-to-us” study, but a “new-to-us” product being tested this year is PinnitMax in our Nitrogen Application Study. PinnitMax is new nitrogen stabilizer chemical that has above-ground protection for UAN and urea applications. Other stabilizers are used for below-ground N applications. PFR will be testing this new nitrogen stabilizer in the Unverth NutriMax® Dual Delivery System. Click here to watch our recent PFR video discussing that study!


Above photo showing IA PFR using a sidedress applicator on V5 corn in
2018 in the Nitrogen Application Study.

Top 7 Tips for In-Season Nitrogen Management

  1. Know your field’s soil moisture levels before applying nitrogen products to prevent nutrient losses and compaction.
  2. Rapid N uptake begins around the V7 growth stage. Make sure an adequate supply of (nitrate) N is available in your soils.
  3. Use a nitrogen stabilizer if needed to reduce N losses.
  4. Take tissue tests, submit soils samples, and/or test nitrogen levels. Examples of tests to take corn stalk nitrate, pre-sidedress nitrate, and water nitrate samples.
  5. Understand your soil types and drainage to help select the forms of N fertilizer for your fields.
  6. Watch the weather forecast for rainfall around nitrogen application timing to mitigate N losses from volatilization.
  7. Avoid application of UAN solutions on heavy residue or no-till fields without a urease inhibitor.  

We look forward to seeing the results from these new nitrogen management studies this growing season. As always, stay tuned with what’s new in PFR by following our reports on our blog and YouTube page, and by using the hashtag #AskPFR on social media.

 

This report was written by Deatra Gremaux, PFR Data and Logistics Manager

 

Practical Farm Research (PFR)® and PFR Proven™ are trademarks of Beck's Superior Hybrids, Inc. 360 Y-DROP® is a registered trademark of 360 Yield Center. PinnitMax™ is a trademark of Corteva Agriscience. Trivapro® is a registered trademark of Syngenta Group Company.

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