Journal of Food, Agriculture and Environment

Agronomic performance of maize in response to seed inoculation with Azospirillum brasilense associated with nitrogen doses and bioregulator

Author(s):

Gleberson G. Piccinin ^{1 *}, Alessandro L. Braccini ², Carlos A. Scapim ², Andréia K. Suzukawa ¹, Lilian G. M. Dan ¹, Fernanda B. Godinho ¹

Recieved Date: 2015-06-09, Accepted Date: 2015-09-22

Abstract:

The objective of the present work was to evaluate the effect of seed inoculation with Azospirillum brasilense associated with nitrogen doses and bioregulator on agronomic performance of maize. In order to do so, the experiments were conducted with the simple hybrid of corn Pioneer 30F35 YH in the agricultural years 2010/2011 and 2011/2012. Treatments were constituted in the absence and presence of seed inoculation with Azospirillum brasilense (0.0 and 200 mL ha^-1), five nitrogen fertilization doses (N 0.0, 45, 90, 135 and 180 kg ha^-1) and two doses of bioregulator (0.0 and 250 mL ha^-1). The experimental design used was in randomized complete blocks in factorial scheme (2 x 5 x 2) with six replications. The agronomic characteristics evaluated were plant height, number of grain rows per ear, number of grains per row, mass per thousand grains, yield and foliar content of N. Data were subjected to joint analysis of variance and the necessary outspreads of the interactions were performed. Seed treatment with inoculant did not influence the plant height and number of grain rows. The use of inoculant does not fully replace the nitrogen fertilization in corn. The interaction between the application of 250 mL ha^-1 of bioregulator in V₄ and the seed inoculation with Azospirillum brasilense did not provide significant increments in yield. Inoculation with Azospirillum brasilense in seeds provided increments of 11% in productivity, followed by the increase in grain number per row and leaf nitrogen content.

Keywords:

Zea mays L., nitrogen fertilization, diazotrophic bacteria, yield

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Journal: Journal of Food, Agriculture and Environment
Year: 2015
Volume: 13
Issue: 3&4
Category: Agriculture
Pages: 67-73

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