Seed quality, chlorophyll content index and leaf nitrogen levels in maize inoculated with<i>Azospirillum brasilense</i>

Pereira, Lívia de Matos; Pereira, Elise de Matos; Revolti, Lucas Tadeu Mazza; Zingaretti, Sônia Marli; Môro, Gustavo Vitti

doi:10.5935/1806-6690.20150047

Cited by 25 publications

(32 citation statements)

References 12 publications

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“…For the NS 92 hybrid, it was verified that the A. brasilense inoculation via seed resulted in a lower emergence and emergence speed index, when compared to the other inoculation methods and the treatment without inoculation. Similar results were observed in a study by Pereira et al (2015), where the inoculation via seeds reduced the emergence and emergence speed index for corn. Souza et al (2014), evaluating the physiological quality of sweet corn seeds inoculated with A. brasilense at different periods and dilutions in water, verified that, as the time between inoculation and sowing increased, a reduction was observed in the first germination count, emergence speed index and root system dry mass.…”

Section: Resultssupporting

confidence: 89%

“…Finally, some studies show that the use of A. brasilense do not influence the corn yield, independently of the use of nitrogen fertilizer (Repke et al 2013, Vogt et al 2014, Pandolfo et al 2015, Sangoi et al 2015. Pereira et al (2015) verified that the inoculation, independently of being via seed or sowing furrow, do not influence the chlorophyll index of corn plants. The same authors observed a higher nitrogen content with the inoculation via sowing furrow only in two corn genotypes (2B707 and the synthetic hybrid V2).…”

Section: Modos De Inoculação Dementioning

confidence: 98%

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Azospirillum brasilense inoculation methods in corn and sorghum

Andrade

Zóz

Zoz

et al. 2019

Pesqui. Agropecu. Trop.

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The Azospirillum brasilense inoculation is usually carried out via seed. However, this bacterium presents passive penetration in the plant, what makes it possible to inoculate the crops using other methods. This study aimed to evaluate the influence of A. brasilense inoculation methods on the emergence and initial growth of corn and sorghum, under greenhouse conditions. A randomized block design, with four replications, in a 4 x 2 factorial scheme, was used. The first factor consisted of a control treatment (without inoculation) and three inoculation methods: via seed, via sowing furrow and via leaf spray. The second factor was composed by two hybrids of corn and two of sorghum. The application of A. brasilense to the seed can reduce the emergence percentage and the emergence speed index of corn seedlings, depending on the genotype, but its application does not influence the initial growth of the plants. The A. brasilense inoculation via seed and via sowing furrow can reduce the emergence and increase the mean emergence time of sorghum seedlings, depending on the genotype. The A. brasilense inoculation via seed results in an increase in the dry mass of the root system of sorghum plants.

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Section: Resultssupporting

confidence: 89%

Section: Modos De Inoculação Dementioning

confidence: 98%

Azospirillum brasilense inoculation methods in corn and sorghum

Andrade

Zóz

Zoz

et al. 2019

Pesqui. Agropecu. Trop.

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“…This effect is better explained by Revolti (2014) and Pereira et al (2015), who studied the influence of genotypes on A. brasilense inoculation and concluded that the response to inoculation varies according to the genotypes used, i.e., hybrids influence the response to inoculation. For Bárbaro et al (2008), it is still necessary to select strains adapted to the local edaphoclimatic conditions, and crops and their cultivars used in each region.…”

Section: Resultsmentioning

confidence: 99%

“…Gitti et al (2012b) found that, in the absence of N supply as top-dressing, seed inoculation with A. brasilense led to better N nutrition. However, for Pereira et al (2015), the effect of inoculation on N content must be carefully analyzed, because the response to inoculation is intrinsic to each genotype used and cannot be used as a general rule.…”

Section: Resultsmentioning

confidence: 99%

Doses and forms of Azospirillum brasilense inoculation on maize crop

Santini

Buzetti

Filho

et al. 2018

Rev. bras. eng. agríc. ambient.

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A B S T R A C TIn search of a more sustainable agriculture, the use of beneficial microorganisms has been highlighted, because they are low-cost and can reduce the use of fertilizers and increase grain yield. The present study aimed to evaluate the efficiency of A. brasilense inoculation and the best form and dose of inoculation in maize, measuring the impact on some physical characteristics and on its nutrition. The experiment was conducted in a greenhouse, in Ilha Solteira, SP, Brazil, in a completely randomized design, with four replicates and eight treatments: 1) control; 2) Seed 1x; 3) Seed 2x; 4) Soil 1x; 5) Soil 2x; 6) Leaf 1x; 7) Leaf 2x; 8) Seed 1x + Leaf 1x, respectively representing in each treatment the site and dose of application (1x, dose recommended by the manufacturer; 2x, twice the dose recommended by the manufacturer). No differences were found in any physical characteristics evaluated between treatments; however, for nutrient contents in the leaf tissue, there was effect on Zn content. It was concluded that, regardless of the presence of A. brasilense inoculation, forms or dose (in hybrid DKB 350), in general, there were no improvements in the characteristics evaluated. Doses e formas de inoculação com Azospirillum brasilense na cultura do milho R E S U M O Microrganismos benéficos vem sendo amplamente aplicados na agricultura, por possuírem baixo custo e possibilitarem a redução da utilização de adubos e incrementos na produtividade de grãos. Com o presente trabalho, objetivou-se determinar o efeito de doses e formas de aplicação do inoculante Azospirillum brasilense na nutrição de planta e na produção da cultura do milho. O experimento foi realizado em casa de vegetação, no município de Ilha Solteira, SP, em delineamento inteiramente ao acaso, com quatro repetições e oito tratamentos: 1) Testemunha; 2) Semente 1x; 3) Semente 2x; 4) Solo 1x; 5) Solo 2x; 6) Foliar 1x; 7) Foliar 2x; 8) Semente 1x + Foliar 1x, sendo, respectivamente dentro de cada tratamento, o local e a dose de aplicação (1x, dose recomendada pelo fabricante; 2x, dobro da dose recomendada pelo fabricante). Não foram verificadas diferenças para os tratamentos avaliados, nas características avaliadas, já para as concentrações de nutrientes no tecido foliar, houve efeito somente para o Zn. Concluiu-se que, independente da presença de inoculação, da forma ou da dose de A. brasilense avaliada, no híbrido DKB 350, de modo geral, não houve melhorias nas características avaliadas e na nutrição da cultura do milho.

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“…O fornecimento do N via fertilizantes químicos é um dos, senão o principal, fator responsável pelo alto custo de produção da cultura, pois a conversão industrial, por meio da quebra da molécula de N 2 para a obtenção dos adubos nitrogenados é um processo dispendioso, aumentando o custo e limitando a produção (PEREIRA, 2014;PEREIRA et al, 2015). Uma das alternativas para assegurar elevadas produtividades com redução no consumo de fertilizantes nitrogenados consiste na inoculação com bactérias diazotróficas, que possuem a capacidade de fixação de N atmosférico no solo, deixando-o disponível às plantas (HUNGRIA, 2011).…”

Section: Introductionunclassified

Evaluation of Biological Inoculants Associated With Reduced Nitrogen Fertilization in Physiological Parameters and Production of Corn Crop

Bárbaro-Torneli¹,

Miguel²,

Nóbile³

et al. 2018

Nucleus

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RESUMO: É importante buscar alternativas para atenuar o uso de adubos nitrogenados em milho, visto que, estes são de alto custo. Objetivou-se estudar os efeitos da inoculação e co-inoculação em diferentes doses e modos de aplicação associadas à adubação nitrogenada reduzida em parâmetros fisiológicos e componentes de produção de milho safrinha. O experimento foi instalado na safrinha de 2017, em área experimental da APTA de Colina, SP. Estudaram-se oito tratamentos: controle, adubações nitrogenadas nas doses de 55 e 110 kg ha -1 de N, 55 kg ha -1 de N + inoculação com Azospirillum na dose de 0,1 L ha -1 na semente, 55 kg ha -1 de N + co-inoculação (Bradyrhizobium e Azospirillum) no tratamento de sementes nas doses de 0,05 e 0,1 L ha -1 para cada inoculante e 55 kg ha -1 de N + coinoculação aplicada nos estádios V3-V4 nas doses de 0,2 e 0,3 L ha -1 para cada inoculante. O delineamento foi o de blocos ao acaso com 4 repetições, com 32 parcelas. Foram avaliados alguns parâmetros no florescimento e componentes de produção por ocasião da maturação. Nota-se alta significância estatística para a maioria dos parâmetros nos diferentes tratamentos testados. De modo geral, maiores incrementos quanto aos componentes de produção foram obtidos com a inoculação com Azospirillum no tratamento de sementes que foi equivalente à prática da co-inoculação com uso das maiores doses de inoculantes via aplicação por pulverização com o jato dirigido sobre o solo entre V3-V4, sendo ambas práticas associadas a adubação nitrogenada reduzida. Sugere-se estudos mais aprofundados no tema envolvendo diferentes locais e safras visando ratificação dos resultados. Palavras-chave: Zea mays L. Inoculação mista. Azospirillum. Modo de aplicação EVALUATION OF BIOLOGICAL INOCULANTS ASSOCIATED WITH REDUCED NITROGEN FERTILIZATION IN PHYSIOLOGICAL PARAMETERS AND PRODUCTION OF CORN CROP SUMMARY:It is important to seek alternatives to mitigate the use of nitrogenous fertilizers in maize, since these are of high cost. The objective of this study was to study the effects of inoculation and co-inoculation in different doses and modes of application associated with reduced nitrogen fertilization in maize production components. The experiment was installed in the 2017, in an APTA experimental area of Colina, SP. Eight treatments were evaluated: control, 55 and 110 kg ha -1 of N, 55 kg ha -1 of N + inoculation with Azospirillum at a dose of 0,1 L ha -1 in the seed, 55 kg ha -1 of N + coinoculation (Bradyrhizobium and Azospirillum) in the treatment of seeds at doses of 0,05 and 0,1 L ha -1 for each inoculant and 55 kg ha -1 of N + co-inoculation applied at V3-V4 stages at doses of 0,2 and 0,3 L ha -1 for each inoculant. The experimental design was a randomized block design with four replications, with 32 plots. Some parameters were evaluated in flowering and components of production at maturity. High statistical significance

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Seed quality, chlorophyll content index and leaf nitrogen levels in maize inoculated withAzospirillum brasilense

Cited by 25 publications

References 12 publications

Azospirillum brasilense inoculation methods in corn and sorghum

Azospirillum brasilense inoculation methods in corn and sorghum

Doses and forms of Azospirillum brasilense inoculation on maize crop

Evaluation of Biological Inoculants Associated With Reduced Nitrogen Fertilization in Physiological Parameters and Production of Corn Crop

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