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As sementes de amendoim (Arachis hypogaea L.) são especialmente vulneráveis à invasão fúngica, causa freqüente de estandes insatisfatórios e, conseqüentemente, de baixas produções da cultura. A eficiência dos fungicidas Captan, Thiram (TMTD), Benomyl, Quintozene (PCNB) e Thiabendazole, aplicados em sementes de amendoim do cultivar Tatu, foi estudada com relação à emergência de plântulas em casa de vegetação, e à emergência inicial, ao estande final e à produção de vagens no campo. Em todos os parâmetros, não houve efeito de época nem de interação fungicida x época de aplicação. A vantagem do uso de fungicida ficou bem evidenciada, uma vez que as sementes tratadas apresentaram, em relação às não tratadas, emergência de plântulas superior em casa de vegetação e maiores valores de emergência inicial, estande final e produção de vagens no campo. Os fungicidas mais eficientes foram Captan e Thiram. Resultados menos expressivos, porém ainda vantajosos se comparados com os da testemunha (sem fungicida), foram alcançados pela aplicação de Quintozene (PCNB), Benomyl e Thiabendazole. Peanut (Arachis hypogaea L.) seeds are specially vulnerable to invasion by fungi, which is a frequent cause of unsatisfactory stands and, consequently, of low crop yields. The efficiency of the fungicides Captan, Thiram (TMTD), Benomyl, Quintozene (PCNB) and Thiabendazole applied to peanut seeds of the cultivar Tatu was studied in relation to seedling emergence in greenhouse, and initial emergence, final stand and pod yield in the field. In all parameters there was no effect of time of fungicide application or of fungicide x time of application. The advantage of the use of fungicide was quite evident, having the treated seeds presented, in relation on the non-treated ones, superior seedling emergence in greenhouse, as well as higher values of initial emergence, final stand and pod yield in the field. The most efficient fungicides were Captan and Thiram (TMTD). Less impressive results, thought still advantageous when compared with those of the control (without fungicide), were obtained by the application of Quintozene (PCNB), Benomyl and Thiabendazole

Tratamentos com fungicidas no comportamento de sementes de amendoim