%0 Journal Article %T VIABILIDADE DO CONTROLE QU¨ªMICO DE DOEN AS FOLIARES EM H¨ªBRIDOS DE MILHO NO PLANTIO DE SAFRINHA %A Eug¨ºnia Mattar Pimenta Gon£¿alves %A Djalma Gon£¿alves J¨²nior %A Alessandro Guera da Silva %A H¨¦rcules Diniz Campos %J Nucleus %D 2012 %I Funda??o Educacional de Ituverava %X Com o objetivo de avaliar a resposta de diferentes h¨ªbridos de milho, ¨¤ aplica o de fungicida, em diferentes est¨¢dios fenol¨®gicos, foi instalado um experimento no munic¨ªpio de Montividiu, GO, durante a safrinha de 2007. O delineamento experimental utilizado foi de blocos casualizados, em esquema fatorial 3x4, com quatro repeti es, correspondendo a tr¨ºs h¨ªbridos de milho (AG 7000, Impacto e P30K75) e tr¨ºs est¨¢dios de aplica o de fungicida (VT, R1 e VT+R1), acrescido da testemunha sem a aplica o de fungicida. Quando realizou-se uma aplica o de fungicida, empregou-se 0,75 L ha-1 do piraclostrobina + epoxiconazole; quando foram realizadas duasaplica es, foi utilizado 0,5 L ha-1 do mesmo fungicida em cada uma das ¨¦pocas (VT e R1). Na safrinha, n o houve acr¨¦scimo de rendimentos com a aplica o de fungicida no h¨ªbrido Impacto, constatando efeitos ben¨¦ficos do fungicida nos h¨ªbridos AG 7000 e P30K75. As maiores rentabilidades foram obtidas, para estes dois h¨ªbridos, com aplica o do fungicida em VT+R1. O uso de fungicida em VT+R1 proporcionou aumento do peso mil gr os e do n¨²mero de gr os por espiga, reduzindo a incid¨ºncia de gr os ardidos e de acamamento de plantas. N o foram constatadas diferen as significativas entre o uso de fungicida e a testemunha para incid¨ºncia e severidade de doen as foliares.In order to evaluate the response of different hybrids of maize, the application of fungicide at different phenological stages an installed was experiment in the municipality of Montividiu, GO, during the latter season of 2007. The experimental design of was randomized blocks in factorial scheme 3x4, with four replicates, corresponding to three hybrids of maize (AG 7000, Impact and P30K75) and three stages of application of fungicide(VT, VT and R1 + R1), plus the witness without the application of fungicide. When you place an application of fungicide, using 0.75 L ha-1 of pyraclostrobin + epoxiconazole, when two applications were made, we used 0.5 L ha- 1 of the same fungicide in each season (VT and R1 ). In the latter season, there was no increase in income with the application of fungicide in hybrid impact, noting the beneficial effects of the fungicide in hybrid AG 7000 and P30K75. The highest returns were obtained for these two hybrids with application of fungicide at R1 + VT. The use of fungicide in VT + R1 increased from one thousand grain weight and number of grains per spike, reducing the incidence of grain rot and lodging of plants. There were no significant differences between the use of fungicide to control and incidence and severity of leaf dise %K Zea mays L. Fungos. Fungicidas. Caracter¨ªsticas sanit¨¢rias. - Zea mays L.. Fungi. Fungicide. Features health. %U http://www.nucleus.feituverava.com.br/index.php/nucleus/article/view/630/847