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Fall Nitrogen Stabilizers

September 28, 2020

As the combines start to roll into the field and the yields come in showing what hybrids needed more nitrogen, it is a great time to consider fall nitrogen products. But what will keep the nitrogen from leaching away from the production area? When applying anhydrous ammonia in the fall, it is important to consider a nitrogen stabilizer. This helps hold the nitrogen in the ground during the winter. Otherwise, there can be a potential of 10%-20% of poundage lost during the winter months.
The CEC of the soil has a big effect on how much nitrogen stays in the ground. The CEC is the total capacity of a soil to hold exchangeable cations. This influences the soil’s ability to hold nutrients and act as a buffer against acidity.  These are two things to consider when applying fall nitrogen products. When anhydrous ammonia is applied it binds with the soil and clay. It then reacts depending upon how wet the soil is and how readily the anhydrous can react efficiently. It can be applied in dry soil, but there must be some sort of moisture to hold the anhydrous in the ground. Otherwise, it will not seal properly or store in the soil. 

SFG offers two excellent stabilizers: Nutrisphere-NH3 and N-Serve. We offer Nutrisphere-NH3 on both of our custom application bars, which are no-till tool bars. Nutrisphere-NH3 immobilizes the ammonium, which keeps it from leaching out of the soil and away from where the nitrogen is needed for crop production. Without a stabilizer, the ammonium reacts whenever it gets enough water to react. This can create problems when fall anhydrous is applied and is expected to wait until the next crop needs the nitrogen.

If you have any questions regarding nitrogen loss in fall anhydrous application, contact your local SFG agronomist. Have a safe harvest. 
Posted: 9/28/2020 2:36:01 PM by Rob Matherly | with 0 comments

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