vol. 28
October 2013
The Seed Consultant
A B I - M O N T H LY N E W S L E T T E R N E W S A N D V I E W S F R O M T H E F I E L D
Residue Decompostion of Corn Stalks after Harvest Over past years of raising corn, yields have increased and so has all the residue left in fields after harvest. Raising higher yields is a plus for the grower’s benefit however trying to decompose the corn stubble has been a challenge and, in some instances, a big problem for the following crop, especially no-till soybeans. New corn heads and attachments have addressed the issue with positive results. However for successful decomposition to occur healthy soil bacteria is needed to digest the residue in the soil. Recent articles addressing residue decomposition are bringing to light the importance of managing this post harvest problem. Undigested corn stalks and other plant matter cause a tie up of nutrients and not building up soil organic matter. In continuous corn additional nitrogen has to be applied to compensate for nitrogen tied up in the residue. Undigested residue in fields the following spring keeps the soil cooler and longer allowing fungal organisms to infect seed if not using proper seed treatments. Crop residues contain nutrients waiting to be recycled in the soil. If residue is properly digested by soil bacteria, nutrients become more available and help crops attain higher yields due to this increase nutrient flow. Soil
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Fall Herbicide application Prepare fields now for less weeds later
Scout for stalk rots Disease prevention
SCI Bulk bin program Store and save options for grain
Wheat yield contest 2013 Winners Announced