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Agronomy Talk

N ILLINOIS AND S. WISCONSIN - JON SKINNER, CCA

Do You Have Your Fertilizer Plans In Place?

Published on Friday, September 23, 2016

As harvest progresses, it’s important to take time to look at what the corn crop has to tell us. Walk your fields and evaluate hybrids for disease, stalk quality, and nutrient deficiencies. Not only will a last minute scouting session help us evaluate the farming and management practices implemented this past year, but it will also help us plan for harvest work. Now is also the time to explore options for residue management and fertilizer decisions.

For farmers in Wisconsin and northern Illinois, it is essential to have a fertilizer plan in place before grain harvest is in full swing. Fields that have been chopped for silage, earlage, or snaplage need to be fertilized with higher levels of commercial fertilizer or continued manure applications since stover or residue has not been returned to the soil.

Typically, corn removed for silage will use 3.5 lb. of P2O5 and 8 lb. of K2O per ton of silage harvested. Grain corn will use .375 lb. P2O5 and .3 lb. K2O per bushel. With a high yielding crop expected, fertilizer removal numbers may seem daunting, but will be essential for continued success in 2017. When it’s time for fertilizer applications, I would welcome the opportunity to visit and answer any questions that arise.

 

Author: Jon Skinner

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