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Chemical control of major diseases of arabica coffee at Khun Chang Khian : Proceedings :

by Jonglaekha, N; Mekamol, S; Highland Coffee Research and Development Centre, Chiang Mai (Tailandia). Faculty of Agronomy.
Publisher: Chiang Mai (Tailandia) 1988Description: p. 198-221.Subject(s): COFFEA ARABICA | PLANTULAS | HEMILEIA VASTATRIX | CERCOSPORA COFFEICOLA | RHIZOCTONIA SOLANI | FUSARIUM OXYSPORUM | ENFERMEDADES FUNGOSAS | CONTROL QUIMICO | FUNGICIDAS | DOSIS DE APLICACION | METODOS DE APLICACION | TAILANDIA | COFFEA ARABICA | SEEDLINGS | HEMILEIA VASTATRIX | CERCOSPORA COFFEICOLA | RHIZOCTONIA SOLANI | FUSARIUM OXYSPORUM | FUNGAL DISEASES | CHEMICAL CONTROL | FUNGICIDES | APPLICATION RATES | APPLICATION METHODS | THAILAND | COFFEA ARABICA | PLANTULE | HEMILEIA VASTATRIX | CERCOSPORA COFFEICOLA | RHIZOCTONIA SOLANI | FUSARIUM OXYSPORUM | MALADIE FONGIQUE | LUTTE CHIMIQUE | FONGICIDE | DOSE D'APPLICATION | METHODE D'APPLICATION | THAILANDEOnline Resources: Click here to access online Summary: Three diseases turned out to be major problems of Arabica coffee cultivated at Khun Chang Khian Highland Research Station. 1) Leaf rust (Hemileia vastatrix) was the most important disease in the planting areas. Three fungicide control tests were made on this disease. The first test showed that three systemic fungicides-Bayleton, Tilt and Plantvax at concentrations of 0.05-0.06 percent a.i. had an obvious curative effect. The second test showed a better effect when Bayfidan was used in alternation with either Cupravit or Comac, and Tilt with Cupravit. The third test gave the best control when Bayfidan 1 percent GR at the rate of 35g/tree was applied twice at intervals of 9 weeks. 2) Brown-eye spot (Cercospora coffeicola) was found to be an endemic disease in the nurseries since it occurred throughout the year and it caused leaf fall and growth reduction. Three experiments on chemical control of this disease were carried out in both lowland and highland conditions. It was found that Benlate used single or alternated with Daconil at intervals of 1-3 weeks gave a considerable control. 3) Wilt of seedlings was found to be a serious epidemic disease. Fusarium oxysporum proved to be a major cause while Rhizoctonia solani was a minor one. Fungicide tests showed that some systemic fungicides. e.g. Terraclor Super X, Pronto 40, Benlate and Carbendazim could control the disease effectively
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Three diseases turned out to be major problems of Arabica coffee cultivated at Khun Chang Khian Highland Research Station. 1) Leaf rust (Hemileia vastatrix) was the most important disease in the planting areas. Three fungicide control tests were made on this disease. The first test showed that three systemic fungicides-Bayleton, Tilt and Plantvax at concentrations of 0.05-0.06 percent a.i. had an obvious curative effect. The second test showed a better effect when Bayfidan was used in alternation with either Cupravit or Comac, and Tilt with Cupravit. The third test gave the best control when Bayfidan 1 percent GR at the rate of 35g/tree was applied twice at intervals of 9 weeks. 2) Brown-eye spot (Cercospora coffeicola) was found to be an endemic disease in the nurseries since it occurred throughout the year and it caused leaf fall and growth reduction. Three experiments on chemical control of this disease were carried out in both lowland and highland conditions. It was found that Benlate used single or alternated with Daconil at intervals of 1-3 weeks gave a considerable control. 3) Wilt of seedlings was found to be a serious epidemic disease. Fusarium oxysporum proved to be a major cause while Rhizoctonia solani was a minor one. Fungicide tests showed that some systemic fungicides. e.g. Terraclor Super X, Pronto 40, Benlate and Carbendazim could control the disease effectively

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