Journal of Food, Agriculture and Environment

Evaluation of the agronomic efficiency of liquid and peat inoculants of Azospirillum brasilense strains in wheat culture, associated with nitrogen fertilization

Author(s):

 Jeferson Klein ^1*,  Vandeir F. Guimarães ²

Recieved Date: 2017-09-15, Accepted Date: 2017-12-30

Abstract:

The use of inoculants containing strains of diazotrophic bacteria of the genus Azospirillum brasilense on cereals of great economic importance, such as wheat, is a current technology. The objective of this study was to evaluate the agronomic efficiency of the Nitro 1000 Graminea inoculant (liquid and peat) with the AbV5 and AbV6 strains of Azospirillum brasiliense, in the wheat crop, via seed treatment, associated with nitrogen fertilization in four different edaphoclimatic regions. The experiments were conducted in a randomized block design with six treatments and four replications, totaling 24 plots each. The CD 150 wheat cultivar was used in four experiments. The treatments were: T1 0 kg ha^-1 nitrogen (N), without inoculation (control); T2  40 kg ha^-1 of N, without inoculation; T3  80 kg ha^-1 of N, without inoculation; T4  40 kg ha^-1 N + seed inoculation with standard AzoTotal® ‘Liquid’ inoculant at the dose of 100 ml 25 kg^-1 of seeds; T5  40 kg ha^-1 of N + seed inoculation with inoculant Nitro 1000 Gramineae Liquid’ at the dose of 100 ml 25 kg^-1 of seeds; and T6  40 kg ha^-1 of N + seed inoculation with inoculant Nitro 1000 ‘Peat’  at  the dose of  100 g 25 kg^-1 of seeds. Nitrogen fertilization was carried out in two applications, part at the time of sowing and the remainder in mulch coverage with urea fertilizer. At planting stage, plant height, stem diameter, leaf area, leaf dry matter, stem dry matter + sheath and total dry matter and N, P and K content in the leaf tissue and grain. In the evaluated harvest the production components were ear length, spike diameter, row number of grains, number of grains per row, mass of one thousand grains and grain yield. The Nitro 1000 Graminea inoculant was evaluated in the liquid and peat formulation and the recommended doses were 100 ml 25 kg^-1 of seeds of the liquid inoculant and 100 g 25 kg^-1 seeds of the inoculant Nitro 1000 Graminea ‘Peat’ via seed treatment for wheat cultivation using half the dose of nitrogen fertilizer for the crop.

Keywords:

Triticum aestivum L., diazotrophic bacteria, plant growth promoting bacteria, nitrogen fertilization, seed inoculation

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Journal: Journal of Food, Agriculture and Environment
Year: 2018
Volume: 16
Issue: 1
Category: Agriculture
Pages: 41-48

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