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Agronomy Talk

C. Iowa - Wade Kent, CCA

Combating Emergence Issues

Published on Thursday, April 14, 2016

The start of the 2016 planting season is here and it’s time to begin watching our crop develop. Delayed emergence of both corn and soybeans is a common issue that occurs across the Corn Belt. Emergence issues are normally tied to either cool and wet or very dry soils. If soils are drier than normal at planting, you may want to consider increasing your planting depth to ensure the seed is in contact with an adequate amount of moisture. Be sure to maintain a normal planting depth if your conditions are cool and wet. If emergence is delayed, begin scouting for seedling diseases like phythium. Seedling diseases have been less of an issue thanks to today’s seed treatments, but it is always good to be on the lookout for them in order to make proactive decisions. 

Additionally, cool wet soils can result in early season nutrient deficiencies that cause plant discoloration. These deficiencies are due to slow nutrient mineralization and tend to cause yellowing and, in some instances, purple crops. In most cases this is nothing to be concerned with. Once soil temperatures are adequate, nutrient uptake will improve with no effect to the plant or yield.

Author: Wade Kent