Posts in Corn
Curvularia Leaf Spot of Corn

Curvularia leaf spot is a corn disease that was reported for the first time in the United States in Louisiana in 2017; its presence was confirmed in Kentucky in 2018. While the impact of this disease in Kentucky is not yet known, it can cause yield losses in other areas where it occurs.

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CornJennifer Elwell
Southern Rust Update for Kentucky

Southern rust of corn, caused by the fungus Puccinia polysora, has NOT been confirmed in Kentucky, as of July 16, 2019. However, the disease has been confirmed in southeast Missouri and western Indiana, so it is possible that southern rust is present in Kentucky at low levels.

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CornJennifer Elwell
Time for Foliar Fungicide Application Decisions in Corn

Corn is moving through growth stages quickly, and the warm, humid weather in many parts of Kentucky has been conducive for foliar disease development. 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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CornJennifer Elwell
Sugarcane Beetle Reported Feeding on Seedling Corn

A farmer in Butler County KY observed a corn field that seedlings were being severely damaged and there was a heavy reduction in the number of stands. Inspection of plants showed entrance holes in the stalk just below ground level, tunnels going to plant crowns, suckers, stunting and center leaves were desiccated (deadheart).

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CornJennifer Elwell
Flooded Corn Late in the Season

If flooding fully submerges corn in fields with soil temperatures above 70 degrees Fahrenheit for more than 24 hours, the corn will not survive. For corn at blacklayer, seed fill was complete. The flooding event, itself, will not affect seed fill. For corn that was near blacklayer, these plants will die prematurely, reducing yields. In either scenario, flooding will slow grain drying and possibly complicate harvest.

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CornJennifer Elwell
Erratic Corn in an Erratic Spring

Corn across Kentucky has had a difficult week. Corn looks erratic in many fields, especially in the eastern half of the Commonwealth. Much of the crop is finally large enough to reveal planting errors, restricted roots and dry spots in fields.

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CornJennifer Elwell
Cut Cutworm Losses

Cutworms are cool-weather, early-season pests of many cultivated plants. Cool conditions and excessive moisture has delayed planting and slowed growth of some crops this year, extending the period of vulnerability to cutworms.  

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CornJennifer Elwell