Nitrogen Loss

June 6, 2019

6.6.19 | Nitrogen Loss from Central Valley Ag on Vimeo.

We have had a lot of rainfall this year. Flooding in Nebraska, Kansas, and Iowa has made national headlines. What is the impact of all of this water on the nitrogen we applied for our crops? Here at CVA, we try to help our growers make the most efficient use of the nitrogen they apply while trying to match the nitrogen they apply to the goals they have for yield on their farms. We all know that heavy and frequent rainfall events can lead to leaching nitrogen below the root zone or losing nitrogen to the atmosphere. What happens on your farm depends on the function of your soil type, when you applied your nitrogen, and what form you applied. Also, a factor, if a nitrification inhibitor was included in the application. This week in our Agronomy Focus video, we discuss this issue and how to think about the potential for loss and if you need to come back and add additional nitrogen to what you may have already applied.

Some important points to consider:

  • What are your yield goals and previous crop?
  • How much N has been applied?
  • How much are you considering applying during the growing season?
  • Has a large portion of the nitrogen you already applied been lost through denitrification or leaching?

This may be a good time to brush up on the nitrogen cycle. CVA has recently developed the SOIL TALK podcast that spends about an hour and a half talking about nitrogen management during the first three episodes. Those podcasts can be a good refresher for you. SOIL TALK is available on SoundCloud, Spotify and Apple Podcasts.

If you think you have had N loss that may negatively impact your crop get with your FSA or ACS Regional Manager. They can walk you through application options as well as tools such as the Presidedress Nitrate Test or Adapt-N nitrogen modeling tool to assess where you are at now and if you need to consider adding more nitrogen to your program this year. Don’t forget about our tissue sampling programs to look at what nutrients the plant says it needs. The plant itself may be saying it is already short of nitrogen or some other nutrient. 

By Tim Mundorf
 

Posted: 6/6/2019 3:05:41 PM by Kelli Reznicek | with 0 comments
Filed under: Agronomy, Flooding, Nitrogen, Soil