Bhabesh Dutta
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Watermelon vine crash or decline has been reported from number of fields from different counties in southwest GA. Based on the county extension agents’ reports and also from the personal observations made by extension specialists (B. Dutta and T. Coolong), symptoms of vine decline are mostly associated with low-wet spots in the fields. However, we…
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Powdery mildew is a common disease of cucurbits under field and greenhouse conditions in most areas of the United States. Although all cucurbits are susceptible, symptoms are less common on cucumber and melon because many commercial cultivars have resistance. This disease can be a major production problem if not manage timely. Podosphaera xanthii and Erysiphe cichoracearum are the two…
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Please see the attached extension publication on initial steps for detecting plant-parasitic nematode problems in vegetables (by Dr. Hajihassani) To access, please click on the link: https://siteextension.uga.edu/publications/detail.html?number=C1126
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Onion fields infested with root knot nematodes (RKN) were found in the Vidalia area. As can be seen in the picture (Photo: Aubrey Shirley), typical symptoms of RKN on above-ground parts of plants can involve patchy stunting, poor growth and yellowing of leaves. These symptoms are rather similar to nutrient deficiency. Premature wilting of plants can be seen…
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The nematology lab at UGA-Tifton reports another incidence of stubby root nematode (SRN) on onion in Tattnall county. The field was highly infested with the SRN and onion plants were severely damaged as can be seen in the figure (Photo: Chris Tyson). The area with severe yellowing and stunting of plants is where the grower…
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Lately, UGA Plant Disease Clinic at Tifton received number of watermelon transplants with typical Rhizoctonia symptoms. Rhizoctonia infection may cause a sunken, necrotic lesion near the soil line in seedlings. The lesion girdles the stem, and the seedling collapses and dies quickly. Cultural control In the greenhouse or seedbed, use only new, pasteurized soil mix.…
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Downy Mildew of Onion (Chris Tyson, Tattnall County Extension Agent) Downy Mildew of Vidalia Onion (Peronospora destructor) was confirmed in the Vidalia Onion growing region on March 19, 2018. This can be a highly destructive disease, causing serious losses in yield and bulb quality. Growers need to be aware of its presence in the area so they…
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Please see the attached extension publication on Fusarium wilt of watermelon. Please click on the link to access: B1485
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Please contact your respective county extension agents to get the latest “Fungicide Spray Guide for Vegetables-2018”.