Ação de fungicidas sobre dois cultivares de feijoeiro em Capão Bonito, SP

ABSTRACT FUNGICIDES ACTION ON TWO BEAN CULTIVARS IN CAPAO BONITO, SAO PAULO STATE, BRAZIL Eleven fungicides were sprayed on field crops of two beans (Phaseolus vulgaris L), cvs. Carioca and Carioca 80, to evaluate their effect on yield performance and disease control under natural conditions of infection. The trials were carried out during four periods: fall of 1985 and 1986 and spring of 1985 and 1986. The tested fungicides were: benomyl, mancozeb, methil thiophanate, captafol, chlorothalonil, triphenyltin acetate, carbendazim, thiabendazole, copper oxychloride, copper sulfate and triphe­nyltin hidroxide. During the fall of 1985 the fungicides captafol, chlorothalonil, triphe­nyltin acetate and carbendazim resulted in high yield for the cv. Carioca; while for the cv. Carioca 80, mancozeb, chlorothalonil, triphenyltin acetate, copper oxychloride and copper sulfate were more efficient. During the spring of 1985 and fall of 1986, the fungicides did not give a significant increase on yield. During the spring of 1986, the best fungicides for the 'Carioca