Control of coffee berry disease (CBD) by fungicides in Ethiopia
2000
Eshetu Derso | Girma Adugna | Teame Gebrezgi (EARO, Addis Abeba (Ethiopia))
Coffee berry disease (CBD), caused by the fungus Colletotrichum kahawae Waller (Syn. Collectotrichum coffeanum Noack) has been the most infamous disease that poses a considerable threat to coffee production in Ethiopia since 1971. The national average loss on local land races is estimated to be between 24 and 30%. In order to reduce the encountered crop loss, fungicide-screening program was formulated and started in 1972 as a short-term strategy for the disease control. Captafol (orthodifolation) 80% WP was one of the recommended and intensively used chemicals in all coffee growing regions although it was withdrawn from use in 1987 due to its carcinogenic effect. Further screening regions although it was withdrawn from use in 1987 and due to its carcinogenic effect. Further screening programs have continued to provide coffee growers with sample choice of effective fungicides, economically cheap and safe to users and the environment. Between 1987 and 1997 about 22 treatments were tested against the disease at Gera (CBD hot spot area) on a uniformly grown mature coffee trees under semi-forest conditions, arranged in a RCBD with 4 replications consisting of 6 trees per plot. Six fungicides, namely, Daconil '2787' 75% WP, Daconil 75% WDG, Shirlan 50% SC, Nordox 50% WP, Octave super 50% WP and a tank mixture of Daconil '2787' and Nordox are recommended to control coffee berry disease in Ethiopia.
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