Inoculação de sementes com Azospirillum brasilense e Rhizobium tropici e adubação nitrogenada em cobertura em feijoeiro de inverno irrigado em sistema plantio direto

• Ano de defesa: 2014
• Autor(a) principal: Corsini, Daiene Camila Dias Chaves [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Feijão - Inoculação; Bacterias; Produtividade agrícola; Solos - Conservação; Beans Inoculation
• Link de acesso: http://hdl.handle.net/11449/124431; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/18-06-2015/000834957.pdf

Due to the high cost of nitrogen fertilization and the limited use of inoculation with nitrogen- fixing bacteria in commun bean, considered inefficient compared to other legumes, technologies that optimize the use of Rhizobium in this culture are fundamental to the pursuit of sustainable production. The use of bacteria of the genus Azospirillum together with Rhizobium may potentiate the nodulation in bean and consequently the crop response to the biological fixation of atmospheric nitrogen. Based on this, the study was conducted in the experimental area, UNESP - Ilha Solteira, located in Selvíria ( MS ) and the Campus of Agronomy UNESP - Ilha Solteira, aiming to verify the development and productivity of bean inoculated with seeds ( T1 - no inoculation, T2 - Azospirillum brasilense, T3 - Rhizobium tropici, T4 - Azospirillum brasilense + Rhizobium tropici ) and doses of nitrogen ( 0, 30, 60, 90 and 120 kg ha -1 ) was used to experimental design was randomized blocks arranged in a 4x5 factorial scheme with four replications in a field experiment and 3 replications in laboratory experiment. It was concluded that: a coinoculação with A. brasilense + R. tropici bean plants greater mass of roots and increased the number of pods and the mass of shoots increased up to a dose of 86 kg ha -1 N in 2012, the highest doses of mineral nitrogen topdressing reduced the number and nodule mass ; productivity in 2012 was influenced linearly by N, and in 2013 the inoculation with A. brasilense provided the highest yield of commun beans