Seedcorn maggots in corn and soybeans have been seen during cool and damp seasons and organic rich soils (manured can be a source of this) or fields with reduced tillage, or decaying residue from the previous.
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Rainy and cloudy days with soggy and cool nights are favorable for mollusk activity. These conditions describe the past 3 to 4 week’s weather conditions in Kentucky, and the damages these organisms are causing to soybean seedlings.
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Weather this spring has challenged corn farmers in Kentucky. Temperature swings and frequent rainfall have led to a wide range of corn growth stages, with some corn in early vegetative stages and some corn still in the bag.
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Corn and Soybean planting progress is ahead of schedule in Kentucky, according to the USDA NASS Crop Progress & Condition Reports. We normally think about that being a good occurrence. But many farmers and crop consultants have reported that the corn and soybeans appear to be standing still. The forecast suggests that will change in a few days.
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Corn that is trying to emerge (germinated and the shoot is growing towards the soil surface) is at greatest risk with the cold weather in the forecast. That cold weather could send shoots downward.
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Congratulations to Kevin Hayden, of Carlisle County, for achieving the top yield of 324.98 bu/A in the 2020 Kentucky Corn Yield Contest with DeKalb DKC65-95RIB seed.
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A western Kentucky extension agent recently commented on the disappearance of no-till corn. No one is returning to the moldboard (or chisel) plow, but there is a lot of discing/vertical (minimum) tillage going on. Why might this be happening?
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Warmer, drier air will dry corn grain faster than cooler and/or wetter air whether the corn is in the bin or still in the field. The past two seasons are demonstrating those extremes.
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Over the past few weeks, there have been increased reports of spotting on corn leaves across the state. Symptoms include tiny tan to brown spots with a darker brown margin.
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View the rules and entry form for the Kentucky Corn Yield Contest. Deadline is November 16.
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Crop scouts and field researchers now have a new tool at their disposal to help correctly estimate disease severity and insect defoliation in field crops. The new online tool has been developed by the Crop Protection Network and can be found here.
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Southern rust of corn, caused by the fungus Puccinia polysora, was confirmed in Caldwell and Daviess counties in Kentucky on July 20, 2020.
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Fungicides are commonly promoted to reduce the impact of foliar disease in corn, but with tight margins and a difficult market, it is important to pay careful attention to the factors that influence the profitability of a fungicide application.
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The Plant Disease Diagnostic Laboratory at the University of Kentucky’s Research and Education Center in Princeton received seedlings of late-planted corn showing symptoms of thrips feeding.
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An absence of rains for almost 2 weeks in western Kentucky allowed the increase in populations of some secondary pests in field corn. One of these insects is the corn flea beetle.
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Be sure to check out the topics and registration information for the Corn and Soybean Field Days on July 21 and 28.
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Weather this spring has challenged corn farmers in Kentucky. Temperature swings and frequent rainfall have led to a wide range of corn growth stages, with some corn in early vegetative stages and some corn still in the bag. The cool, wet conditions that have plagued planting progress recently have also increased the risk of seedling disease in Kentucky corn fields.
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