Studies on gummy stem blight disease of cucurbits in Trinidad
1986
Bala, G. | Hosein, F. (Ministry of Agriculture, Lands and Food Production, Centeno (Trinidad and Tobago). Central Experiment Station)
The fungus, identified as Didymella bryonae (Anersw.) Rehm. (conidial state: Ascochyta melonis Potebnia) causes symptoms of 'damping-off' in seedlings such as: watery lesions, defoliation, bark scaling and 'black rot' of young fruit. Isolates from watermelon were highly pathogenic to all the cucurbits tested including melon (Cucumis melo), pumpkin and squash (Cucurbita sp.), cucumber (Cucumis sativus), christophine (Sechium edule), bitter gourd (Momordica charantia), smooth loofah (Luffa cylindrica) and angled loofah (L. acutangula). All watermelon varieties are susceptible, with yield losses of 10-100 % for watermelon and pumpkin. Fruit quality is also adversely affected
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