Efeitos do turno de rega, da densidade de plantio e da aplicação de fungicida no controle do mofo-branco na cultura do feijão

• Ano de defesa: 2013
• Autor(a) principal: Montes, David Rolando Palomino
• Orientador(a): Oliveira, Rubens Alves de
• Banca de defesa: Silva, Leonardo Duarte Batista da , Coelho, Mauricio Bernardes , Martinez, Mauro Aparecido
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Doutorado em Engenharia Agrícola
• Departamento: Construções rurais e ambiência; Energia na agricultura; Mecanização agrícola; Processamento de produ
• País: BR
• Palavras-chave em Português: Irrigação agrícola; Fungicida; Feijão; Sclerotinia sclerotiorum
• Palavras-chave em Inglês: Agricultural irrigation; Fungicide; Beans; Sclerotinia sclerotiorum
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA
• Link de acesso: http://locus.ufv.br/handle/123456789/769

This research was conducted at Viçosa, Minas Gerais State, Brazil, with common bean crop cv. Madrepérola (Phaseolus vulgaris L.), during 2011 and 2012, at winter season. The experiment aimed at assessing the effect of plant density (6, 9, 12 and 15 plants per linear meter), irrigation intervals (3, 6, 9 and 12 days) and fungicide fluazinan application (with and without) on white mold incidence and severity and the effect on production components, yields and water efficiency use by common bean crop. This experiment was arranged in a split-split plots scheme, with the chemical control in the plots, the irrigation frequency in the split plots and the plant density in the split-split plots, in a randomized block design, with three replications. The chemical control with fungicide fluazinan was the most effective method to reduce white mold incidence and severity, the percentage of grains infected by the disease and the mass of Sclerotinia sclerotiorum. As consequence of this treatment, it was found higher number of legumes, grains per plant, 100 grains weight and yields. The irrigation intervals haven t been an effective method to control Sclerotinia sclerotiorum. However, higher yields and better production components were observed in lower irrigation interval, principally to each 3 days. Lower densities of plants also favored the Sclerotinia sclerotiorum control, resulting in higher number of legumes, grains per plant, grains per legume and 100 grains weight. However, higher yields were observed in higher plant densities (12 and 15 plants per meter). It was observed higher efficiency of water use in treatments with fungicide, lower irrigations intervals and higher plant densities.