DEVELOPMENT OF A PROTOTYPE FOR EVALUATING HERBIGATION

• Autor(a) principal: Ruas, Renato Adriane Alves
• Data de Publicação: 2011
• Outros Autores: Teixeira, Mauri Martins, Fernande, Haroldo Carlos, da Silva, Antônio Alberto, Vieira, Rogério Faria
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Engenharia na Agricultura
• Texto Completo: https://periodicos.ufv.br/reveng/article/view/158
• topic: Irrigação; herbigação; aplicação de agrotóxicos

This study was done to construct and evaluate a prototype to be used in trials herbigation. The experiment was carried out in a greenhouse of EPAMIG, in Viçosa, Minas Gerais. The uniformity of the volumetric distribution was determined by operating the application system at the working pressures of 20, 40, 60, 80, or 100 kPa. The herbigation experiment was laid in completely randomized design in 4 x 3+3 factorial scheme. Fomesafem was applied at the rate of 60, 120, 180 or 240 g ha-1, after 1, 7 or 14 days of emergence of Bidens pilosas, with respective checks. The dry biomass was determined 35 days after emergence. Data were subjected to analysis of variance and the means were compared by Newman Keuls test( p = 0.05). There was no significant difference between volumetric distribution uniformity in the central part of the system. The maximum weed control was achieved with 240 g ha-1 of fomesafem, irrespective of the application time.