By Ashley Robinson Fusarium wilt is one of the most serious and difficult diseases to manage in watermelons and occurs in most production regions worldwide. The fungal disease can be seedborne and has great longevity in the soil, allowing the infested soil to also serve as a source of infection. FUSARIUM WILT Fusarium wilt has been a recurring issue for …
Managing Gummy Stem Blight in Watermelon
By Ashley Robinson Gummy stem blight (GSB), also known as black rot, is a common issue for watermelon producers in the Southeast. Didymella bryoniae, the fungus that causes GSB, favors warm and humid weather, leaving the Southeast growing region susceptible to the disease’s devastating effects. If not managed well, it can cause significant yield loss for growers. RECENT ISSUES Over …
Grafted Watermelon Seedlings Could Benefit Growers
By Ashley Robinson Researchers at the University of Florida Institute of Food and Agricultural Sciences are studying grafted watermelon seedlings because of the advantages they can provide to growers. The grafted seedlings, an intentional fusion of plant parts, are resistant to fusarium wilt and tolerant to cold temperatures. “This is kind of an additional tool to use if you do …
Watermelon Institute Meeting Focuses on Disease Management
By Karla Arboleda Faculty and staff at University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) focused on disease management at the 2019 Suwannee Valley Watermelon Institute meeting on Dec. 3. Among the attendees were growers, trade show exhibitors and UF/IFAS employees. The event included a disease management workshop and updates on the watermelon industry. WATERMELON DISEASES Nicholas Dufault, …
Better Cucumber and Watermelon Varieties Coming Soon
By Karla Arboleda Researchers at North Carolina State University (NC State) are working to release new cucumber and watermelon varieties. Due to persistent issues affecting cucurbits, experts at NC State are aiming to improve cucumber and watermelon varieties. Todd Wehner, a horticultural science professor at NC State, is working to provide cucurbits that are resistant to downy mildew and gummy …
Wildflowers Help Watermelon Pollinators
By Karla Arboleda To attract more watermelon pollinators, growers can use different types of wildflowers around their crops. That’s what Miriam Jenkins, a graduate of Clemson University’s Wildlife and Fisheries Biology program, determined from her recent study. For pollinator-dependent crops like watermelon, adding certain wildflowers to the surrounding landscape helps create a better area for pollinators to feed. Jenkins said …
Fusarium Wilt Management in Watermelons
By Karla Arboleda Watermelons this season have suffered through the hot weather, and researchers in Jackson County, Florida, have been seeing mixed results with fusarium wilt management. Josh Freeman, University of Florida Institute of Food and Agricultural Sciences associate professor of horticultural sciences, works on how to deal with the watermelon disease. “It’s really the primary soilborne disease that growers …
New Watermelon Rootstock Proves Pest, Disease Resistant
By Karla Arboleda Southeastern watermelon growers have struggled with fusarium wilt and nematodes for decades. A new rootstock may be the light at the end of the tunnel. Carolina Strongback, a new watermelon rootstock, is resistant toward fusarium wilt and nematodes. Researchers developed the watermelon line at the U.S. Department of Agriculture’s Agricultural Research Service (ARS) and Clemson University. They …
Novel Watermelon Rootstock Knocks out Disease and Pests
CHARLESTON, SOUTH CAROLINA (USDA/ARS) — A new watermelon line, developed by Agricultural Research Service (ARS) and Clemson University scientists, gets to the root of the problem of a major disease and pest of watermelon crops in the southern United States. Carolina Strongback is a rootstock watermelon that is resistant to Fusarium wilt and the southern root-knot nematode, according to William “Pat” …
What to Do About Watermelon Gummy Stem Blight and Fusarium Wilt
By Nicholas S. Dufault Gummy stem blight (GSB) and fusarium wilt (FW) can be common problems for watermelon producers in the Southeast. These two diseases are caused by fungal pathogens from the same taxonomic subphylum, but that is where the similarities end. GSB tends to be more of a foliar pathogen that can move to the petioles and vines, and …