Response of green corn to Azospirillum brasilense inoculation and N levels/ Resposta do milho verde a inoculacao com Azospirillum brasilense e niveis de nitrogenio

The aim of this study was to evaluate the effect of A. brasilense inoculation and nitrogen fertilization on green corn yield. The study was conducted out in Teresina, PI, in 2011 and 2012, and treatments were arranged in a randomized block design with five N rates (0, 50, 100, 150 and 200 kg N [ha.s...

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Bibliographic Details
Published in:Ciência rural 2014-09, Vol.44 (9), p.1556
Main Authors: Araujo, Raul Matos, de Araujo, Ademir Sergio Ferreira, Nunes, Luis Alfredo Pinheiro Leal, Figueiredo, Marcia do Vale Barreto
Format: Article
Language:Spanish
Subjects:
Corn
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Summary:The aim of this study was to evaluate the effect of A. brasilense inoculation and nitrogen fertilization on green corn yield. The study was conducted out in Teresina, PI, in 2011 and 2012, and treatments were arranged in a randomized block design with five N rates (0, 50, 100, 150 and 200 kg N [ha.sup.-1]) with and without inoculation. In the inoculated treatment it was used a product with A. brasilense, strains Abv5 and Abv6. There was a significant increase in both number and mass of commercial corn cobs with A. brasilense inoculation as compared with treatment without inoculation. The association of inoculation with A. brasilence and nitrogen increase more than 30% the corn cobs production. Key words: biological nitrogen fixation, Zea mays. N rates. O objetivo deste trabalho foi avaliar o efeito da inoculacao com Azospirillum brasilense e adubacao nitrogenada sobre a produtividade do milho verde. O estudo foi conduzido no municipio de Teresina, PI, em 2011 e 2012, e os tratamentos foram dispostos em delineamento de blocos ao acaso sob arranjo fatorial de 5x2, sendo cinco doses de nitrogenio (N) (0, 50, 100, 150 e 200 kg N [ha.sup.-1]) com e sem inoculacao. No tratamento com inoculacao, foi utilizado um produto formulado contendo A. brasilense, estirpes Abv5 e Abv6. Houve aumento significativo no numero e na massa das espigas comerciais com a inoculacao de A. brasilense em relacao ao tratamento sem inoculacao. A combinacao de inoculacao com A. brasilence e nitrogenio aumenta em mais de 30% a producao de espigas de milho verde. Palavras-chave: fixacao biologica de nitrogenio, Zea mays, Doses de N.
ISSN:0103-8478
1678-4596
DOI:10.1590/0103-8478cr20130355