Targeting fertilizer applications to optimize rates can pay off with higher yields and efficient use of inputs.

 

Joe Sperfslage, who farms near Coggon, Iowa, has taken his fertilizer program to the next level — combining grid-based soil sampling with variable rate planting and a split-season nitrogen (N) fertilizer program.

 

“We’re really happy with it,” Sperfslage said.

 

He uses River Valley Cooperative's YieldVantage precision ag system to calculate prescription fertilizer rates based on a number of factors, including soil test results and weather.

 

“We put on 15 gallons of 32 percent (urea-ammonium nitrate) with pre-emergent herbicide in the spring before we plant and incorporate,” Sperfslage said.

 

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