Cold wet soil conditions favor many of Ohio’s seedling pathogens.

Many of these corn and soybean pathogens, common residents in the soil in many areas of the state, are there waiting for favorable conditions to infect plants. We have found a large number of Pythium spp. as well as Fusarium causing these diseases. Conditions that favor development include: cold (<65oF) and saturated soils for long periods of time. To minimize the impact that these pathogens can have on corn and soybean production; plant when soil temperatures are closer to optimum for seed germination and growth.

Admittedly, this may be a challenge in many areas of the state this year as soil temperatures hover in the low 40’s. Correct drainage issues in fields with a history of stand establishment problems. A poorly drained field is especially prone to these types of conditions. Tillage doesn’t always solve this problem if a hard-pan develops. Check tile lines to be sure that they are still draining. Finally, use seed treatments to protect the seed. We have found these to be highly successful when heavy rains occur shortly after planting and can protect the stand and avoid a replant issue. Seed that has been treated with a fungicide (insecticides don’t count) are best to put in poorly drained fields. Seed treatments can not protect against severe flooding and they don’t work miracles, but they may be able to protect the stand and avoid a replant situation.

Any Great Lakes Hybrids with Poncho 250 and Trilex FL will help protect your seed against these early season pathogens.

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