By Clint Thompson Fusarium wilt disease continues to be observed in North Florida watermelons. Bob Hochmuth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Regional Specialized Extension agent in Live Oak, Florida, cautions growers against spending large amounts of money on potential remedies. They won’t be effective this late in the growing season. “I saw some of these …
Powdery Mildew Detected in North Florida Watermelon
By Clint Thompson Lab testing has confirmed powdery mildew disease in watermelon in the Suwanee Valley region of Florida. Growers should be proactive in beginning their fungicide spray programs, says Bob Hochmuth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Regional Specialized Extension agent in Live Oak, Florida. “We got the first confirmation, and it was very good …
Georgia Watermelon Crop Stymied by Adverse Weather Conditions
By Clint Thompson Georgia’s watermelon crop is off to a sluggish start following cool temperatures, heavy rains and high winds in recent weeks. Ty Torrance, University of Georgia Cooperative Extension vegetable agent for Colquitt, Tift and Worth counties, describes the impact he has noticed in fields so far. “There’s a little bit of cold injury. The largest impact is everything’s …
Fungicide Programs Key for North Florida Watermelon Producers
By Clint Thompson Fungicide programs are crucial for North Florida watermelon growers trying to stave off disease development in their young plants. Especially following cooler temperatures and heavy winds last weekend, the watermelon crop in the Suwanee Valley region is susceptible to various diseases. Bob Hochmuth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Regional Specialized Extension agent …
New Viruses to Watch for in Watermelon and Other Cucurbits
By Pamela D. Roberts Whitefly-transmitted viruses are the major disease problem for watermelons grown in South Florida. For the past few decades, whitefly-transmitted viruses have included squash vein yellowing virus (SqVYV), cucurbit leaf crumple virus (CuLCrV) and cucurbit yellow stunting disorder virus (CYSDV). A HISTORY OF VIRUSESAlthough SqVYV was first identified from squash in Florida in 2005, it had most likely been …
Watermelon Anthracnose: Current Trends and Future Directions
By Navjot Kaur and Bhabesh Dutta Watermelon anthracnose is caused by the fungal pathogen Colletotrichum orbiculare, which impacts all above-ground parts of the plant. C. orbiculare also causes anthracnose in other cucurbit crops such as cucumber, muskmelon, squash, gourd, pumpkin, cantaloupe and honeydew. The disease is favored by conditions including high humidity, rainfall, overhead irrigation and warm temperatures in the …
Time to Sample Watermelon Plants
By Clint Thompson It is time for petiole-sap testing or leaf tissue analysis for watermelon producers in North Florida. Bob Hochmuth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Regional Specialized Extension agent in Live Oak, Florida, discusses the testing service that UF/IFAS Extension provides to growers. “We collectively provide a service of going out and running petiole …
Watermelon 2021: Domestic Production Down, Imports Up
Domestic watermelon production was down in 2021, though imports from other countries like Mexico, Guatemala and Honduras rose. Domestic production totaled 3.37 billion pounds last year, a decrease of 2% from 2020. This was mostly attributed to a 7% decrease in Georgia production because of a cooler spring and 35% decrease in Texas due to Winter Storm Uri. Florida’s watermelon …
Attention North Florida Watermelon Producers: Diseases Observed in Isolated Fields
Two diseases have been observed in North Florida watermelon. Bob Hochmuth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Regional Specialized Extension agent in Live Oak, Florida, reported in his weekly email that Psudomonas (angular leaf spot) and gummy stem blight have been reported, though in isolated fields. “If bacterial diseases are not a concern in your fields, …
Copper Applications: What to Know for North Florida Watermelon Producers
By Clint Thompson A better understanding of copper applications could provide North Florida watermelon producers a safer management plan in producing their crop this season. Mark Warren, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Extension agent in Levy County, wants to better educate producers about the different forms of copper and its potential impact on watermelon plants. …