![]() The centers of leaf lesions may fall out. Water-soaked lesions are also common and on hosts other than watermelon. Leaf lesions often start at the leaf margin and are brown, circular or triangular, and have concentric rings. Gummy stem blight can cause symptoms on the leaves, stems, and vines and is also called black rot when fruits are infected. The disease can develop from multiple sources: infected seeds, infected cucurbit crop debris where the pathogen overwinters, or from windblown spores. High humidity, rainfall, and overhead irrigation, along with temperatures around 75☏ for watermelon and cucumber and 65☏ for cantaloupe are favorable for disease development. is a major disease of cucurbits in our region. Yunis H and Elad Y (1989) Survival of dicarboximide-resistant strains of Botrytis cinerea in plant debris during summer in Israel.Jake Jones, Extension Agriculture Agent, Kent County Stem blight caused by Stagonosporopsis spp. Amand PC (1993) Field tests for resistance to gummy stem blight of cucumber in North Carolina. Volpin H and Elad Y (1991) Influence of calcium nutrition on susceptibility of rose flowers to Botrytis blight. ![]() Netherlands Journal of Plant Pathology 88: 47–56 Van Steekelenberg NAM (1982) Factors influencing external fruit rot of cucumber caused by Didymella bryoniae. Canadian Journal of Plant Pathology 11: 143-147 Utkhede RS and Li TSC (1989) Chemical and biological treatments for control of apple replant disease in British Columbia. Stanghellini ME, Rasmussen, SL, Kim DH and Rorabaugh PA (1996) Efficacy of nonionic surfactant in the control of zoospore spread of Pythium aphanidermatum in a recirculating hydroponic system. In: Delp CJ (ed) Fungicide Resistance in North America (pp 6–8) APS Press, St. ![]() Sisler HD (1988) Fungicidal action and fungal resistance mechanisms. Amand PC and Wehner TC (1995b) Eight isolates of Didymella bryoniae from geographically diverse areas exhibit variation in virulence but isolate by cultivar interaction on Cucumis sativus. Journal of American Society of Horticultural Science 120: 673–680 Amand PC and Wehner TC (1995a) Greenhouse, detached-leaf, and field testing methods to determine cucumber resistance to gummy stem blight. Descriptions of Pathogenic Fungi and Bacteria. Punithalingan E and Holliday P (1972) Commonwealth Mycological Institute. In: Howard RJ, Garland JA and Seaman WL (eds) Diseases and Pests of Vegetable Crops (pp 309–310) The Canadian Phytopathological Society and Entomological Society of Canada, Ottawa, Canada Menzies JG, Jarvis WR and MacLatchy IA (1994) Gummy stem blight. Journal of American Society of Horticultural Science 118: 786–790 Klieber A, Lin WC, Jolliffe PA and Hall JW (1993) Training systems affect canopy light exposure and shelf life of long English cucumber. In: Brighton Crop Protection Conference - Pest and diseases - 1992, Vol 1 (pp 435–442) British Crop Protection Council, Farnham, UK Godwin JR, Anthony VM, Clough JM, Godfrey CRA (1992) ICIA5504: a novel, broad spectrum, systemic betamethoxyacrylate fungicide. Paul, MNįarr DF, Bills GF, Chamuris GP and Rossman AY (1989) Fungi on Plants and Plant Products in the United States. In: Delp CJ (ed) Fungicide Resistence in North America (pp 1–3) APS Press, St. ![]() Gewasbescherming 3: 65–69Įckert JW (1988) Historical development of fungicide resistance in plant pathogens. British Columbia Ministry of Agriculture, Food and Fisheries (pp 117) Victoriaīoerema GH and van Kesteren HA (1972) Enkele bijzondere schimmelaantastingen. subtilis (AGS-4) applied post-inoculation to control gummy stem blight on greenhouse cucumbers.īCMAFF (1997) Greenhouse Vegetable Production Guide For Commercial Growers. These results suggest the potential of azoxystrobin, kresoxim-methyl, E. Fruit rot of cucumber was significantly reduced when the fruit was treated with ‘Nova’ or kresoxim-methyl. bryoniae on cucumber plants under greenhouse conditions. subtilis (AGS-4), and lysozyme in one experiment when applied as sprays on lesions caused by D. Of four experiments conducted, the chemical treatments ‘Nova’, 1 kresoxim-methyl, and azoxystrobin controlled the disease in three experiments and the biological treatments E. cereus, and strain B8Fr of Enterobacter agglomerans produced antagonistic zone against D. Eleven strains of Bacillus subtilis, strain AGB10 of B. Experiments were conducted to determine the effects of chemical and biological treatments on gummy stem blight of cucumber caused by Didymella bryoniae in vitro and under greenhouse conditions.
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