By Trevor Corboy, Brown County Extension Educator, Agriculture & Natural Resources and Community Development, Kendra Stahl, Crawford County Extension Educator, Agriculture & Natural Resources, Dean Kreager Licking County Extension Educator, Agriculture & Natural Resources, Jacob Winters, Auglaize County Extension Educator, Agriculture & Natural Resources, Stephanie Karhoff, CCA, Field Specialist, Agronomic Systems – Published in the Agronomic Crops Network C.O.R.N Newsletter – https://agcrops.osu.edu/
The southern half of the state remains especially dry as corn and first crop soybean enter early reproductive stages. Field issues Ohio State University Extension Educators and Specialists have seen this past week include gray leaf spot on corn, poor weed control, and chlorosis or yellowing in soybean.
Southwest – Trevor Corboy of OSU Extension in Brown County reported that the region received anywhere between 0.5 – 2.5 inches of rainfall, as dry conditions persist. Main field activities in southwest Ohio included 2nd cutting hay and herbicides being applied to double crop soybean fields. Both soybean and corn are in good condition and wheat harvest is nearly complete.
Northwest – Kendra Stahl of OSU Extension Crawford County shared that wheat harvest is on average >85% complete in northwest Ohio. Growers have also been busy finishing 2nd cutting hay, double crop soybean planting, and baling straw. First crop soybean is in fair condition, and corn is in good condition. Early symptoms of gray leaf spot were seen after humid conditions 2-3 weeks prior. The most common weed issues so far have been giant ragweed, velvet leaf, volunteer corn, foxtail, and waterhemp.
Southeast – OSU Extension Licking County Extension Educator Dean Kreager reported that rainfall has been variable across the region but well below average since early June. Dry conditions have slowed forage growth in hay and pasture fields, but corn is in excellent condition as it begins to tassel. Soybean in fair condition and earlier planted fields have reached R1 (flowering).
Central and West Central – Jacob Winters of OSU Extension Auglaize County shared that fungicide applications in corn began in some areas this past week. Other field activities included tillage, herbicide applications, and second cutting hay. Wheat harvest is ≥80% complete in the region. Corn planted in April and early May has begun tasseling and is in good condition. Soybeans are approaching flowering and are also in good condition. Yellowing soybeans were observed in West Central Ohio, potentially from potassium deficiency, dry conditions, and/or herbicide damage.