Managing Southern Corn Rust in Louisiana

Figure 1. Southern corn rust. Spores are orange.

Primary Author: Clayton Hollier, Plant Pathologist, Department of Plant Pathology and Crop Physiology Boyd Padgett, Regional Director and Plant Pathologist, Central Region Trey Price, Plant Pathologist, Macon Ridge Research Station

We have scouted several corn fields concerning reports of southern corn rust (SCR). These reports and field visits reveal an epidemic of southern rust across

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Bacterial Blight (Angular Leaf Spot) Observed in Louisiana Cotton Fields

Figure 2.  Bacterial blight lesions following leaf veins.

Bacterial blight was once (prior to 1991) a major disease of cotton causing average annual losses of as much as 3.4%. In severe cases, losses ranged from 50 to 70%. From 1991 to 2000, average losses due to bacterial blight averaged 0.1%. Over the past few years, a resurgence of the disease has been noted

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Frogeye Leaf Spot Prevalent in Louisiana Soybean

Figure 2.  Coalescing frogeye leaf spot lesions (note the gray coloration near the centers of the lesions).

Over the past two weeks, many reports of frogeye leaf spot have been coming in from all soybean growing areas in the state. Overall disease severity in susceptible varieties has been light to moderate. The disease is caused by a fungus, Cercospora sojina, and has the potential to reduce yield by reducing leaf area and

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Sorghum Midge and White Sugarcane Aphid Concerns

David Kerns and I have been receiving numerous phone calls this week about problems with applications of pyrethroids tank mixed with Transform for control of midge and white sugarcane aphid. The use of a pyrethroid for control of sorghum midge is a common practice in Louisiana; however, pyrethroids are very toxic to beneficial insects and

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Where’s the rain? – Climate App

climate20

In the Midsouth it seems that the question in the spring is “How much rain did you get?” Our lives revolve around rainfall, but as most are aware it is not always consistent across a region. This is where a basic app such as Climate|Basic can be useful. After approximately 10-15 minutes, you can set

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LSU AgCenter Northeast Region Rolling Crops Field Tour: Dinner at 6:00 PM

Dinner and door prizes at 6:00 PM

White Sugarcane Aphid Considerations and Status in Louisiana Grain Sorghum

David Kerns and I have been receiving numerous calls about white sugarcane aphid infestations in grain sorghum. Much of the grain sorghum is boot to heading stage and is being treated for midge with aphids in the mix. Many of these situations present unique issues with product choice and resulting effect on aphids. Please follow

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Sugarcane Aphid Numbers Increasing in Grain Sorghum

Sugarcane Aphids in Sorghum

Infestations of sugarcane aphids in boot to heading grain sorghum are increasing in Louisiana. Many of these populations start off small and exponentially increase in a span of 5 to 7 days. Pyrethroid applications for midge control can reduce natural enemy numbers allowing sugarcane aphids to reach damaging numbers faster. Honey dew produced by sugarcane

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LSU AgCenter Northeast Region Rolling Crops Field Tour

corn

2014 Northeast Research Station Pest Management and Crop Production Field Day

NERS Field Day Flyer