HÍBRIDOS DE MILHO INOCULADOS COM Azospirillum brasilense  SOB DIFERENTES DOSES DE NITROGÊNIO

Cadore, Rafael; Netto, Antônio Paulino da Costa; Reis, Edésio Fialho dos; Ragagnin, Vilmar Antônio; Freitas, Douglas Siqueira; Lima, Taynara Peres de; Rossato, Marieli; D’Abadia, Ana Claudia Alves

doi:10.18512/1980-6477/rbms.v15n3p398-409

Cited by 8 publications

(5 citation statements)

References 3 publications

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“…Of the genotypes used, 67% performed better using chemical fertilization when evaluating PROL and 78% of the genotypes had better responses regarding NGR in the treatment with nitrogen. Cadore et al (2016) observed that inoculation did not increase the variables analyzed, such as ear length, grains per row, and grain yield while studying the effect of inoculation with Azospirillum brasilense on hybrid maize under different nitrogen doses. According to Leben et al (1987), the inconsistency of positive results is frequent with rhizobacteria that promote plant growth, especially in field conditions.…”

Section: Resultsmentioning

confidence: 94%

Effect of Azospirillum brasilense on yield components of maize

Segismundo¹,

Oliveira²,

Silva³

et al. 2020

Científica

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Among the countless operations involved in the maize production system, nitrogen fertilization is essential for the crop yield and development. However, due to the costs and negative environmental impacts caused by chemical fertilization, the use of the bacterium Azospirillum brasilense is an alternative to reduce costs and increase yield. Thus, this study evaluates the effect of inoculation of Azospirillum brasilense on the yield components of synthetic varieties of maize. The experiments were carried out at UNESP -Jaboticabal Campus, state of São Paulo, Brazil. The randomized block design was used with two replicates, testing fortysix maize genotypes: forty-four synthetic genotypes and two checks. Experiments were performed without nitrogen topdressing and with Azospirillum brasilense inoculation and, with nitrogen topdressing and without Azospirillum brasilense inoculation. Grain yield, average weight of grains, prolificacy, ear length, ear diameter, number of rows and number of grains per row were evaluated. The analysis of combined variance of experiments was performed considering the effects of genotypes, experiments, and the Genotype x Experiment interaction. Using the means from the analysis of variance, the Scott-Knott test was applied at 5% probability for the cases in which the F test was significant. It was found that bacterial inoculation increased yield, average weight of grains, ear diameter, and number of rows, while nitrogen fertilization increased prolificacy, ear length, and number of grains per row.

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Section: Resultsmentioning

confidence: 94%

Effect of Azospirillum brasilense on yield components of maize

Segismundo¹,

Oliveira²,

Silva³

et al. 2020

Científica

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“…Furthermore, using this bacterium makes nitrogen available through biological fixation (Pedrinho et al 2010;Dartora et al 2013) and biocontrol of plant pathogens. These factors directly enhance root growth, thus increasing crop productivity (Milléo and Cristófoli 2016;Cadore et al 2016). A study by Dartora et al (2016) and Di Salvo et al (2018) found that combining nitrogen fertilizer and seed inoculation with microorganisms increased maize growth and yield.…”

Section: Introductionmentioning

confidence: 99%

Effect of different doses of nitrogen and inoculation with Azospirillum brasilense on the productive characteristics of maize

López Avalos,

Valdez Ocampo,

Ledesma Bogarin

et al. 2024

J Exp Bio & Ag Sci

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This study assessed the effects of different nitrogen doses on maize crops, with and without the inoculation of Azospirillum brasilense. The experiment was carried out during the 2020/2021 harvest season in the administrative department of Concepción, district of Horqueta, Paraguay, at the coordinates of 23°14'31.7" S and 56°53'05.9" W. The experiment followed a randomized complete block design (RCBD) arranged in a factorial design (4 X 2). Factor A included nitrogen doses (0, 40, 80, and 120 kg ha-1), while factor B corresponded to the bacterial inoculation (with and without A. brasilense). The experiment was performed in three replications; each experimental unit (EU) was 22.5 m2. The study evaluated the following characteristics: plant height, cob insertion height, cob length and diameter, weight of 1000 kernels, and kernel yield. The data were analyzed using analysis of variance (ANOVA), and the averages were compared using Tukey's test at a 5% probability of error. Regression analysis was also carried out during the study. The experiment results demonstrated that increased nitrogen levels positively affected the measured characteristics, fitting a quadratic model, except for cob insertion height. Inoculation with A. brasilense significantly increased corn growth and productivity. The interaction of both factors produced a significant increase in cob length. Based on the experiment results, applying 104.30 kg ha-1 of N in combination with A. brasilense inoculation is recommended for improved maize production.

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“…O fornecimento inadequado de nitrogênio (N) na cultura do milho (Zea mays) é um dos principais fatores restritivos ao rendimento de grãos, pois, é uma das culturas mais exigentes em fertilizantes, sobretudo os nitrogenados, que desempenham papel fundamental nos processos bioquímicos da planta (Sichocki et al, 2014;Oliveira et al, 2018). Logo, a obtenção do máximo potencial produtivo do milho está condicionada ao fornecimento apropriado de N (Santos et al, 2013), Devido ao elevado custo econômico e ambiental do processo industrial de fabricação de fertilizantes minerais, aliado ao aumento da demanda por alimentos, tornase importante a busca por práticas agrícolas que visem racionalizar o uso de N pelas plantas (Cadore et al, 2017). Diante desse cenário, uma estratégia bastante interessante e vantajosa é o uso de insumos biológicos na agricultura.…”

Section: Introductionunclassified

Uso de diferentes Bacillus spp. promotores de crescimento vegetal associado com adubação nitrogenada na cultura do milho

Nakatani,

Gato,

Sandini

2024

OLEL

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Há um crescente interesse em otimizar os efeitos positivos da associação entre bactérias promotoras de crescimento e a cultura do milho (Zea mays) visando reduzir o uso de fertilizantes nitrogenados. Nesse contexto, investigamos o uso de Bacillus licheniformis e Bacillus aryabatthai, bem como o consórcio dessas duas bactérias na cultura do milho. Os experimentos de campo foram realizados na safra 2020/2021 e na 2ª safra de 2021 em seis locais do Brasil. Foram comparados os tratamentos controle e nitrogenado completo (100% do N) com a aplicação de Bacillus licheniformis CCT8084, Bacillus aryabhattai CCT8087 e o consórcio desses Bacillus e redução de 25% do N. Os resultados mostraram que, comparado ao controle, os diferentes Bacillus aumentaram o teor de N nas folhas ou nos grãos na maioria das áreas, aumentaram a massa vegetal e produtividade em todos os locais. Adicionalmente, os Bacillus associados a redução de 25% do N proporcionaram desenvolvimento de plantas e produtividades equivalentes às obtidas com aplicação da adubação nitrogenada completa.

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HÍBRIDOS DE MILHO INOCULADOS COM Azospirillum brasilense SOB DIFERENTES DOSES DE NITROGÊNIO

Cited by 8 publications

References 3 publications

Effect of Azospirillum brasilense on yield components of maize

Effect of Azospirillum brasilense on yield components of maize

Effect of different doses of nitrogen and inoculation with Azospirillum brasilense on the productive characteristics of maize

Uso de diferentes Bacillus spp. promotores de crescimento vegetal associado com adubação nitrogenada na cultura do milho

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