![]() A fact sheet from the University of Florida was sent to help. Is this a recommended application? It was not thought to be a technique that would help! Better to have resistant varieties if they are available, and the writer said that he would contact AVRDC. The sender of the message from Pohnpei also asked about spreading Mancozeb, as a paste, with a brush on the stem against gummy stem blight. Copper sprays might be useful.Īlso, it was suggested that important steps in managing the disease are to:Ī fact sheet from Hawaii ( ) mentions that reports of gummy stem blight being seed transmitted are conflicting, but there is good evidence for it from other sources ( muskmelon and cucumber/pumpkin). If this was the case, it is likely that the plants would collapse. If a stem is broken and a stringy goo is present, this is indicative of bacterial infection. To check, another visited to the field would be needed to inspect the stems. Leaf symptoms start as browning at leaf edges. Both are caused by the fungus Didymella bryoniae. There was a suggestion that the damage was caused by snails!Īnother suggestion was bacterial wilt of cucumber which is transmitted by beetles. Gummy stem blight and black rot Quick facts Gummy stem blight describes the leaf and stem infection stages of the disease. ![]() Photos of gummy stem blight on cucumber taken in Pohnpei in the 1980s were sent (top right & left below). The photo was not clear enough for a diagnosis a long shot to see the general state of the plants was needed, but none could be obtained as the farm was some way off. 1 The average yield loss from this disease in non-treated plantings has been reported as 43, and gummy stem blight was the most common disease of watermelon in South Carolina between 20. He was asked to inspect cucumbers on Pohnpei, and found damaged leaves that he thought were gummy stem blight on the stems, Didymella bryoniae, and asked wither it is likely to be the cause of the problem? The farmer has been growing cucumber on the same land for several years. Gummy Stem Blight - ALSO KNOWN AS BLACK ROT OR ALLIGATOR SKIN Beginner Advanced Click to print Click to enlarge. Gummy stem blight is one of the most destructive diseases of watermelon in tropical and subtropical regions, such as the southeastern U.S. A member from Pohnpei, Federated States of Micronesia, asked for help in identifying a disease of cucumber. Crops > Vegetables > Cucurbits & others > Cucumber > Cucumber, possibly gummy stem blight, FSMĬrops VegetablesCucurbits & othersCucumber Cucumber, possibly gummy stem blight, FSM Cucumber, possibly gummy stem blight, FSM
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