By Clint Thompson Insecticide rotation when managing whiteflies remains key to long-term success in the Southeast. It has to be if growers want to avoid insecticide resistance developing. Stormy Sparks, University of Georgia (UGA) Cooperative Extension vegetable entomologist, believes farmers have improved in recent years in protecting their insecticides for the future. “The same chemistries that we rely on, primarily …
Cucurbit Downy Mildew: Disease Flares up in South Florida Area
Downy mildew disease remains a major problem for Florida’s cucurbit farmers, according to the South Florida Pest and Disease Hotline. The disease has flared up drastically over the past couple of weeks in multiple cucumber fields. It is still active in squash and cucumbers in the southwest Florida area. Incidence and severity range from low to moderate. It is also …
Anthracnose Awareness: UF/IFAS Encourages Growers to be Wary of Disease
By Clint Thompson Incidences of anthracnose are on the rise in cucurbits in the Southeast. They’ve already impacted production in Georgia. Experts in Florida want producers to be wary of the disease. While this past season’s dry spring spared Florida production, anthracnose is still a concern for Gary Vallad, professor of Plant Pathology at the University of Florida Institute of …
Analyzing Anthracnose: Cucurbit Disease a Major Issue for Growers
By Clint Thompson One disease that Southeast cucurbit producers need to have on their radar this upcoming season is anthracnose. It is rapidly becoming a major issue for growers, says Bhabesh Dutta, University of Georgia (UGA) Cooperative Extension vegetable plant pathologist. “It’s now a major problem after Pcap (phytophthora capsici). It has been an emerging issue in our cucurbits including …
Downy Mildew Alert: Alabama Pumpkin Growers Be Wary of Disease
By Clint Thompson Increased rainfall this summer has one Alabama plant pathologist concerned about downy mildew disease on the state’s pumpkin crop. Ed Sikora, professor and Extension plant pathologist in the Department of Entomology and Plant Pathology at Auburn University, says growers need to be wary of the disease since the weather is conducive to its development. “I would say …
New Viruses Detected in Florida Melons
IMMOKALEE, Fla. — Florida’s watermelon producers face two new viruses. But it is important to remember that finding a disease is the first step to managing it, says a University of Florida scientist who helped diagnose both diseases. “Now that it is known that there are additional (watermelon) viruses in the mix, efforts can be made to determine their impacts …
Gummy Stem Blight: How to Prepare for Disease in Fall Cucurbit Crops
Source: The South Carolina Grower From Clemson Plant Pathologist Tony Keinath. Gummy stem blight is more common and more severe on fall cucurbit crops than crops grown in the spring. The cooler weather and longer dew periods in the fall provide an ideal environment for the fungal pathogen to grow and spread. Gummy stem blight is most common on watermelon …
Wet Summer to Impact Fall Crops
By Clint Thompson Persistent rainfall in summer and early fall may favor conditions for foliar and soil-borne diseases in vegetable crops, particularly those that are caused by water molds or oomycetes, says Bhabesh Dutta, University of Georgia Cooperative Extension vegetable plant pathologist. “Saturated soils can promote damping off, seedling blight and root rot in transplanted vegetables, especially in low lying …
Downy Mildew Disease Detected on Watermelon in Georgia
According to the University of Georgia Extension vegetable blog, downy mildew disease has been detected on watermelon in Ben Hill County, Georgia. Downy mildew is among the top diseases of cucurbit crops, like cucumbers, watermelon, squashes and pumpkins. It can destroy plant foliage and cause the leaves to curl and die. This leaves the plant vulnerable to blisters and sunscald …
Managing Whitefly-Transmitted Viruses in Georgia
By Bhabesh Dutta and Rajagopalbabu Srinivasan The silverleaf whitefly (Bemisia tabaci), also known as sweetpotato whitefly, is a pest of several horticultural and agronomic crops in southern Georgia. While direct feeding can injure plants and lead to problems such as silvering of leaves, deposition of honeydew and formation of sooty mold, whiteflies also can transmit numerous devastating plant viruses. Transmission …