Abstract— Post-harvest diseases are a major problem for banana yield. Despite treatments with chemical fungicides, a persistence of diseases is noticed. This study aims at proposing a biological control method against banana post-harvest diseases by using banana rachis leachate. The effect of leachate has been tested in vitro on mycelial growth, conidial germination and in vivo on pathogenic fungi virulence. All leachate concentrations (5, 15 and 20%) tested showed antifungal activity on the tested fungi. However, the 20% concentration was more effective with complete inhibition of mycelial growth and conidial germination of all fungi. No symptoms of crown rot and anthracnose were observed after treatment of bananas with leachate. However, with azoxystrobin, the prevalence of crown rot and anthracnose was 60% and 30%, respectively. Banana rachis leachate recorded highly significant reduction of banana finger rot prevalence compared to azoxystrobin. Banana rachis leachate have strong antifungal properties that may be useful to control banana post-harvest disease as a safe alternative option to chemical fungicides
Keywords— banana; post-harvest diseases; banana rachis leachate, antifungal activity.
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