With several sunny days last week planting progressed with 70% of corn and 40% of soybeans now planted. Continued progress will likely be delayed in many areas where there was rain and even snow early this week.
A closer look at air and soil temperatures in April and soybean germination and emergence from 10 planting dates did not find chilling injury, despite periods below 50°F. Further research is needed to better understand the imbibitional period in soybean.
As of Sunday 46% of the state's corn was planted, up from 35% last week, but well behind the five-year average of 72%. Approximately 20% of soybean had been planted, up from 14% last week, but well behind the average of 32%.
Farmers affected by early spring flooding likely have increased yield risk from changed soil characteristics, excess moisture, or late planting and may want to consider adjusting their plans for 2019 grain sales.
Research suggests that staying with a full-season hybrid until late May often provides the best yield. If planting is delayed to late May or early June, consider a medium-season CRM might be considered.
If the first signs of corn emergence (or lack of emergence in some field areas) are causing you concern, follow these steps for assessing the stand and evaluating whether replanting would be advisable.
Michael Sindelar talks with Extension Plant Pathologist Tamra Jackson-Ziems about common corn seedling diseases, what to watch for in the field, and how to collect and submit quality samples for diagnosis.