Abstract
Black Sigatoka, caused by the fungus Mycosphaerella fijiensis, is the main devastating banana (Musa sp.) leaf disease. The environmental and health constraints linked to the misuse of chemicals against this disease imply efficient methods aimed at reducing these products. This study, conducted on the Akressi site of Société Agricole Kablan Joublin (SAKJ), an industrial company of dessert banana, assessed the reduction in the dose of contact fungicide associated with adjuvants on black Sigatoka prevalence in Ivorian industrial banana tree plantations. This study made it possible to assess certain phytopathological (YLA, YNL and SI), growth (NEL and LER) and toxicity parameters of treatments every week over two months. Banana trees treated with reduced doses of VONDOZEB 62 OD associated with adjuvants induced statistically identical performance to the reference control. Thus, the use of reduced doses of fungicides associated with adjuvants appears to be an ideal strategy for reducing M. fijiensis severity and the use of chemical fungicides in the control of this disease.
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