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Chemical control of mango anthracnose disease in Ghana
Abstract
Abstract
Seven different fungicides were evaluated in-vitro and in the field for their efficacy against the causal agent and incidence and severity of mango anthracnose disease in Ghana. The recommended rates of Bendazim, (Carbendazim), Funguran (Copper hydroxide), Ivory (Mancozeb), Agriette +Ivory (Fosetyl-Al +Mancozeb), Sundomil (Mancozeb+Metalaxyl), Top Cop (Copper +flowable sulphur), Mirage (Prochloraz), Bendazim+Ivory and Funguran+Ivory were mixed with potato dextrose agar (PDA) and the radial mycelial growth of the pathogen was determined on these amended media. The fungicides were applied on fruit bearing trees in a commercial farm in the Yilo Krobo District after which the disease incidence, severity and percentage of exportable fruits were determined. The results showed that the pathogen was not able to grow on PDA amended with the fungicides. In the field, Bendazim and Funguran fungicides were able to suppress the disease to a large extent resulting in the highest percentage of exportable fruits. Prochloraz solution at both ambient temperature and 53 °C were able to completely eradicate the pathogen, and prevented development of postharvest anthracnose disease symptoms.
Original scientific paper. Received 30 Apr 14; revised 23 Sept 14.
Seven different fungicides were evaluated in-vitro and in the field for their efficacy against the causal agent and incidence and severity of mango anthracnose disease in Ghana. The recommended rates of Bendazim, (Carbendazim), Funguran (Copper hydroxide), Ivory (Mancozeb), Agriette +Ivory (Fosetyl-Al +Mancozeb), Sundomil (Mancozeb+Metalaxyl), Top Cop (Copper +flowable sulphur), Mirage (Prochloraz), Bendazim+Ivory and Funguran+Ivory were mixed with potato dextrose agar (PDA) and the radial mycelial growth of the pathogen was determined on these amended media. The fungicides were applied on fruit bearing trees in a commercial farm in the Yilo Krobo District after which the disease incidence, severity and percentage of exportable fruits were determined. The results showed that the pathogen was not able to grow on PDA amended with the fungicides. In the field, Bendazim and Funguran fungicides were able to suppress the disease to a large extent resulting in the highest percentage of exportable fruits. Prochloraz solution at both ambient temperature and 53 °C were able to completely eradicate the pathogen, and prevented development of postharvest anthracnose disease symptoms.
Original scientific paper. Received 30 Apr 14; revised 23 Sept 14.
