Doses and application methods of Azospirillum brasilense in irrigated upland rice

Revista Brasileira de Engenharia Agricola e Ambiental

Portugal, José R.¹  Penteado, Mariele de S.¹  Arf, Orivaldo²  Rodrigues, Mayara²  Peres, Amanda R.³  Garcia, Nayara F. S.³ 

[1] , Ilha Solteira, Brazil;Júlio de Mesquita Filho”Universidade Estadual Paulista “Universidade de São Paulo, Piracicaba, Brazil

关键词: Oryza sativa L.;    diazotrophic;    cv. IAC 202;    nitrogen fixation;    grain yield.;   

DOI  :  10.1590/1807-1929/agriambi.v20n11p990-995

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The study was carried out in Selvíria-MS, in the 2011/12 and 2012/13 agricultural years, aiming to evaluate the efficiency of Azospirillum brasilense in nitrogen fixation in upland rice, as a function of doses and application methods of the inoculant containing this diazotrophic bacterium. The experimental design was randomized blocks, arranged in a 4 x 4 factorial scheme, with 4 doses of inoculant (control without inoculation, 100, 200 and 300 mL of the commercial product ha-1) and 4 application methods (seed inoculation, application in the sowing furrow, soil spraying after sowing, and foliar spraying at the beginning of plant tillering), with 4 replicates. During the experiment, the agronomic characteristics, production components and yield of the rice crop were evaluated. It was concluded that the inoculant containing Azospirillum brasilense promotes increase (19%) in the yield of upland rice under sprinkler irrigation when used at the dose of 200 mL ha-1, regardless of the application methods.

【 授权许可】

CC BY