Ryegrass Control in Wheat Begins at Planting

Italian ryegrass (AKA: annual ryegrass) continues to be a major weed in Kentucky wheat acres, and has arguably become tougher to control over the last several years. This spring in particular we observed numerous wheat fields in western and central Kentucky that had ryegrass escapes late in the season and at harvest.

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Wheat, WeedsJennifer Elwell
Soil Nitrogen and Fall Wheat N Nutrition

Most winter wheat grown in Kentucky follows corn – sometimes soybean. The residual nitrogen (N) fertilizer remaining and/or that N released from crop residue is typically sufficient to meet wheat’s fall N requirement, prior to dormancy. But how does one know if sufficient N is present to meet the wheat N requirement?

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Soil, WheatJennifer Elwell
Crops Marketing and Management Update

In a typical year, the August Crop Production report provides insight into the size of the corn and soybean crops. The historically late-planted corn and soybean crops have created uncertainty about the planted area and yield potential. The August reports included a re-survey of planted area in states that account for 85% of U.S. corn and soybean production.

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MarketingJennifer Elwell
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
Crops Marketing and Management Update

2019 Acreage Survey Confounds Market - The June 28th Acreage report was anticipated by the market to quantify the extent of the impact of the late planting season on corn and soybean acreage. Analysts surveyed before the report’s release expected corn area to decline to 87.03 million acres, which would be a 5.77 million-acre drop from the March Prospective Planting report.

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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