Identification and Management of Leaf Spots in Cotton

by Heather Kelly, University of Tennessee

This year I have gotten more questions about leaf spots in cotton than any other.  It hasn’t always been clear which leaf spot is present, but the following resources can help identify and understand management options of leaf spots in cotton.

This season in cotton bacterial blight is the leading leaf spot culprit, but as canopies have been closed in some fields for over 2 weeks and have had good moisture, target spot might start showing up more often as well as other leaf spots. Use the resources below to identify what leaf spots you’re seeing and what the best management options are:

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Leaf spot disease a major problem for Georgia peanut growers

by Kyle Dawson, University of Georgia

Georgia peanut growers are experiencing problematic leaf spot diseases this year due to susceptible varieties and weakening fungicide treatments, according to Albert Culbreath and Tim Brenneman, plant pathologists at the University of Georgia Tifton Campus.

Brenneman said this year’s dry conditions should have set up an environment that’s less favorable for leaf spot. Continue reading

Target spot severity varies among cotton varieties

From Southeast Farm Press

Target spot has created much concern among cotton growers in the Southeast over the past few years and began showing up in cotton fields in the Carolinas and Virginia for the first time last year.

Little is known about the impact of the fungal disease on yield and quality, but recent research indicates there may be significant differences among varieties.

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