ISSN: 1659-2751

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Evaluation of the Effect of Leachates of Banana Inflorescent on the Severity of Black Leaf Streak Disease (Mycosphaerella fijiensis) in a Plantain (Musa AAB) Crop under Organic Agroforestry and Conventional Production Systems

Abstract

Black leaf streak disease (Mycosphaerella fijiensis) is the most important constrain for banana and plantain, reaching losses around 80 % of production. In this study, the incubation period, evolution and severity of the disease were evaluated. The experiment was established in randomized complete blocks design with three replicates and five treatments. The evaluated treatments were concentrations of leachate from 0 % to 20 % applied every 15 days for 95 days. The incubation and evolution of the disease appeared earlier in the conventional system than the organic agroforestry. In relation to disease severity, there were no significant differences (p≤0.05) between treatments for disease control, but there were significant differences between the production systems, resulting in a higher infection rate in the conventional system as compared to the organic agroforestry system, using a scale of infection developed by the authors of this research.

Key words: leachate, evolution period, incubation period, plantain, severity, black leaf streak, organic agroforestry system, conventional system.

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