Application affects nitrogen loss
By Mike Surbrugg
Joplin Globe
“Nitrogen is a tricky, slippery thing to work with.”
That was the assessment from Peter Scharf, a University of Missouri plant scientist, during a recent meeting held in Mount Vernon where he talked about different sources of nitrogen fertilizer.
He focused of using urea or ammonium nitrate sources.
There is potential for nitrogen loss from any source, he said.
A lot of fertilizer in Missouri is broadcast on the surface of pastures and hay fields. “Grass is king in Southwest Missouri,” he said.
A lot of broadcast urea can be lost through volatilization, he said. The loss is greatly reduced when the urea can be knifed into the soil or by tilling it into the soil within four days of application.