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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
04/03/2016 |
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Data da última atualização: |
01/06/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FUKAMI, J.; NOGUEIRA, M. A.; ARAUJO, R. S.; HUNGRIA, M. |
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Afiliação: |
JOSIANE FUKAMI, UEL; MARCO ANTONIO NOGUEIRA, CNPSO; RICARDO SILVA ARAUJO, Total Biotecnologia Indústria e Comércio Ltda.; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Accessing inoculation methods of maize and wheat with Azospirillum brasilense. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
AMB Express, v. 6, n. 3, p. 2-13, 2016. |
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ISSN: |
2191-0855 |
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DOI: |
10.1186/s13568-015-0171-y |
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Idioma: |
Português |
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Conteúdo: |
The utilization of inoculants containing Azospirillum is becoming more popular due to increasing reports of expressive gains in grain yields. However, incompatibility with pesticides used in seed treatments represents a main limitation for a successful inoculation. Therefore, in this study we searched for alternatives methods for seed inoculation of maize and wheat, aiming to avoid the direct contact of bacteria with pesticides. Different doses of inoculants containing Azospirillum brasilense were employed to perform inoculation in-furrow, via soil spray at sowing and via leaf spray after seedlings had emerged, in comparison to seed inoculation. Experiments were conducted first under greenhouse controlled conditions and then confirmed in the field at different locations in Brazil. In the greenhouse, most parameters measured responded positively to the largest inoculant dose used in foliar sprays, but benefits could also be observed from both in-furrow and soil spray inoculation. However, our results present evidence that field inoculation with plant-growth promoting bacteria must consider inoculant doses, and point to the need of fine adjustments to avoid crossing the threshold of growth stimulation and inhibition. All inoculation techniques increased the abundance of diazotrophic bacteria in plant tissues, and foliar spray improved colonization of leaves, while soil inoculations favored root and rhizosphere colonization. In field experiments, inoculation with A. brasilense allowed for a 25 % reduction in the need for N fertilizers. Our results have identified alternative methods of inoculation that were as effective as the standard seed inoculation that may represent an important strategy to avoid the incompatibility between inoculant bacteria and pesticides employed for seed treatment. MenosThe utilization of inoculants containing Azospirillum is becoming more popular due to increasing reports of expressive gains in grain yields. However, incompatibility with pesticides used in seed treatments represents a main limitation for a successful inoculation. Therefore, in this study we searched for alternatives methods for seed inoculation of maize and wheat, aiming to avoid the direct contact of bacteria with pesticides. Different doses of inoculants containing Azospirillum brasilense were employed to perform inoculation in-furrow, via soil spray at sowing and via leaf spray after seedlings had emerged, in comparison to seed inoculation. Experiments were conducted first under greenhouse controlled conditions and then confirmed in the field at different locations in Brazil. In the greenhouse, most parameters measured responded positively to the largest inoculant dose used in foliar sprays, but benefits could also be observed from both in-furrow and soil spray inoculation. However, our results present evidence that field inoculation with plant-growth promoting bacteria must consider inoculant doses, and point to the need of fine adjustments to avoid crossing the threshold of growth stimulation and inhibition. All inoculation techniques increased the abundance of diazotrophic bacteria in plant tissues, and foliar spray improved colonization of leaves, while soil inoculations favored root and rhizosphere colonization. In field experiments, inoculation with A. brasilense ... Mostrar Tudo |
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Thesagro: |
Fixação de nitrogênio; Milho; Trigo. |
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Thesaurus Nal: |
Azospirillum brasilense; Corn; Nitrogen fixation; Wheat. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/140653/1/13568-2015-Article-171.pdf
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Marc: |
LEADER 02544naa a2200265 a 4500
001 2039673
005 2017-06-01
008 2016 bl uuuu u00u1 u #d
022 $a2191-0855
024 7 $a10.1186/s13568-015-0171-y$2DOI
100 1 $aFUKAMI, J.
245 $aAccessing inoculation methods of maize and wheat with Azospirillum brasilense.$h[electronic resource]
260 $c2016
520 $aThe utilization of inoculants containing Azospirillum is becoming more popular due to increasing reports of expressive gains in grain yields. However, incompatibility with pesticides used in seed treatments represents a main limitation for a successful inoculation. Therefore, in this study we searched for alternatives methods for seed inoculation of maize and wheat, aiming to avoid the direct contact of bacteria with pesticides. Different doses of inoculants containing Azospirillum brasilense were employed to perform inoculation in-furrow, via soil spray at sowing and via leaf spray after seedlings had emerged, in comparison to seed inoculation. Experiments were conducted first under greenhouse controlled conditions and then confirmed in the field at different locations in Brazil. In the greenhouse, most parameters measured responded positively to the largest inoculant dose used in foliar sprays, but benefits could also be observed from both in-furrow and soil spray inoculation. However, our results present evidence that field inoculation with plant-growth promoting bacteria must consider inoculant doses, and point to the need of fine adjustments to avoid crossing the threshold of growth stimulation and inhibition. All inoculation techniques increased the abundance of diazotrophic bacteria in plant tissues, and foliar spray improved colonization of leaves, while soil inoculations favored root and rhizosphere colonization. In field experiments, inoculation with A. brasilense allowed for a 25 % reduction in the need for N fertilizers. Our results have identified alternative methods of inoculation that were as effective as the standard seed inoculation that may represent an important strategy to avoid the incompatibility between inoculant bacteria and pesticides employed for seed treatment.
650 $aAzospirillum brasilense
650 $aCorn
650 $aNitrogen fixation
650 $aWheat
650 $aFixação de nitrogênio
650 $aMilho
650 $aTrigo
700 1 $aNOGUEIRA, M. A.
700 1 $aARAUJO, R. S.
700 1 $aHUNGRIA, M.
773 $tAMB Express$gv. 6, n. 3, p. 2-13, 2016.
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Embrapa Soja (CNPSO) |
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