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Agronomy Talk

E. IOWA - GREG SHEPHERD, CCA

Corn and Soybean Updates

Published on Wednesday, July 13, 2016

A few corn fields may show yellowing or slight striping, but all in all corn is off to a solid start. Yellowing, striping or flashing can often be attributed to either rapid growth syndrome or the transition from seminal to nodal roots. The nodal roots provide the majority of the nutrient needs from the V6 growth stage on. This time of year, the nutrient needs of corn increase as well because it is preparing for a burst of vegetative growth. Keep in mind, if your corn has something other than healthy green pigmentation for a several days, you may have a more serious issue.

Many soybean fields are a horse of a different 
color. I visited numerous soybean fields that kept us on the edge of our seats as they emerged over multiple weeks. Soybeans coming up over a few weeks isn’t ideal, but these fields can still produce an impressive yield. Soybeans have an exceptional ability to branch out and fill open space in order to capture sunlight. If you had uneven emergence and are concerned about a less than ideal stand, I recommend adding a residual to your post herbicide application. This will help keep the weeds under control until the soybean branches have extended to collect every bit of sunlight available.

 

Author: Greg Shepherd

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