Tag Archives: vegetable diseases

Cucurbit Downy Mildew 2012

We have yet to see downy mildew on cucurbits here in Louisiana this year, but it was recently reported on cucumbers in Baldwin County, Alabama, which is east of Mobile Bay. Growers, especially those growing watermelons and pumpkins, and county … Continue reading

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Sclerotinia Diseases in the Vegetable Garden

Last week was our annual tour of commercial vegetable growers in West Feliciana Parish. AgCenter personnel and several of the commercial growers met and spent the morning touring the various growers’ operations. We saw some early blight on tomatoes, but … Continue reading

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it’s Time to Control Early Blight on Tomatoes

Visited several commercial vegetable growers in Livingston Parish with Kenny Sharpe yesterday. Starting to see early blight showing up on tomatoes at various locations and one tomato field with bacterial speck causing a significant amount of damage on the variety … Continue reading

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New Oomycete-specific Fungicide from Syngenta

Micora™, a new fungicide from Syngenta, is now registered for use on greenhouse and outdoor ornamentals and vegetable transplants to be sold to retail consumers. Micora™ contains the active ingredient mandipropamid (a carboxylic acid amide), which is specific for the … Continue reading

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Disease Du Jour (June 22, 2011)

I taught a Master Gardeners class in Avoyelles Parish yesterday evening and in appreciation Dr. Carlos Smith and members of the class presented me with this beautiful bouquet. It’s not everyday that you get a bouquet of tomato flowers, especially … Continue reading

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Disease Du Jour (June 7,2011)

Summer is heating up here in Louisiana and we’re starting to see quite a bit of southern blight, caused by the soilborne fungus Sclerotium rolfsii, on both tomatoes and peppers.  Infected plants seem to collapse overnight and white fungal mycelium is usually observed at the … Continue reading

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Southern Bacterial Wilt of Tomato: Samples Wanted

Southern bacterial wilt is a major problem on tomato in Louisiana. The disease is caused by the soil-borne bacterium Ralstonia solanacearum, and symptoms usually develop in late spring or early summer once the weather warms up.  The most obvious symptom is the sudden (seemingly … Continue reading

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