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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Clima Temperado. |
Data corrente: |
14/12/2023 |
Data da última atualização: |
14/12/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
WANDER, A. E.; MATTOS, M. L. T. |
Afiliação: |
ALCIDO ELENOR WANDER, CNPAF; MARIA LAURA TURINO MATTOS, CPACT. |
Título: |
Economic evaluation of biological nitrogen fixation in flooded rice cultivation in subtropical lowlands. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Journal of Agriculture and Rural Development in the Tropics and Subtropics, v. 124, n. 1, p. 57-63, 2023. |
ISSN: |
2363-6033 |
DOI: |
https://doi.org/10.17170/kobra-202306128202 |
Idioma: |
Inglês |
Conteúdo: |
This study aimed to assess the economic viability of biological nitrogen fixation in flood rice cultivation in subtropical lowlands. A field experiment of seven treatments was carried out during the cropping seasons 2015/16, 2017/18, 2018/19 and 2019/20 at the Lowland Experimental Station of Embrapa, in Pelotas, RS, Brazil. The evaluated treatments were: (1) negative control (without N and inoculant); (2) positive control with recommended N-fertilisation (120 kg N ha−1, without inoculant) (standard recommendation); (3) inoculant 1 (accessions CMM 174 + CMM 175 + CMM 179); (4) inoculant 2 (accessions CMM 176 + CMM 197 + CMM 205); (5) combination of reduced N-fertiliser doses (90 kg N ha−1) + inoculant 1; (6) combination of reduced N-fertiliser doses (90 kg N ha−1) + inoculant 2; and (7) commercial inoculant [Azospirillum brasilense (strains Ab-V5 and Ab-V6)]. A partial budget was used to compare evaluated treatments with the standard recommendation regarding nitrogen fertilisation. Inoculant 2 composed of bacterial accessions CMM 176 (Rhizobium sp.), CMM 197 (Bacillus sp.) and CMM 205 (Aeromicrobium sp.) combined with reduced mineral nitrogen fertilisation [90 kg N ha−1 (applied in top dressing)] demonstrates the best agroeconomic efficiency in the production of irrigated rice in subtropical lowlands with the cultivar BRS Pampa. |
Palavras-Chave: |
Diazotrophic bacteria. |
Thesagro: |
Arroz; Fixação de Nitrogênio; Inoculante; Nitrogênio. |
Thesaurus Nal: |
Economic impact; Irrigated soils; Lowlands; Nitrogen; Nitrogen fixation; Subtropical soils. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1159752/1/Journal-agr-rural-development-tropics-subtropics-2023.pdf
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Marc: |
LEADER 02275naa a2200289 a 4500 001 2159752 005 2023-12-14 008 2023 bl uuuu u00u1 u #d 022 $a2363-6033 024 7 $ahttps://doi.org/10.17170/kobra-202306128202$2DOI 100 1 $aWANDER, A. E. 245 $aEconomic evaluation of biological nitrogen fixation in flooded rice cultivation in subtropical lowlands.$h[electronic resource] 260 $c2023 520 $aThis study aimed to assess the economic viability of biological nitrogen fixation in flood rice cultivation in subtropical lowlands. A field experiment of seven treatments was carried out during the cropping seasons 2015/16, 2017/18, 2018/19 and 2019/20 at the Lowland Experimental Station of Embrapa, in Pelotas, RS, Brazil. The evaluated treatments were: (1) negative control (without N and inoculant); (2) positive control with recommended N-fertilisation (120 kg N ha−1, without inoculant) (standard recommendation); (3) inoculant 1 (accessions CMM 174 + CMM 175 + CMM 179); (4) inoculant 2 (accessions CMM 176 + CMM 197 + CMM 205); (5) combination of reduced N-fertiliser doses (90 kg N ha−1) + inoculant 1; (6) combination of reduced N-fertiliser doses (90 kg N ha−1) + inoculant 2; and (7) commercial inoculant [Azospirillum brasilense (strains Ab-V5 and Ab-V6)]. A partial budget was used to compare evaluated treatments with the standard recommendation regarding nitrogen fertilisation. Inoculant 2 composed of bacterial accessions CMM 176 (Rhizobium sp.), CMM 197 (Bacillus sp.) and CMM 205 (Aeromicrobium sp.) combined with reduced mineral nitrogen fertilisation [90 kg N ha−1 (applied in top dressing)] demonstrates the best agroeconomic efficiency in the production of irrigated rice in subtropical lowlands with the cultivar BRS Pampa. 650 $aEconomic impact 650 $aIrrigated soils 650 $aLowlands 650 $aNitrogen 650 $aNitrogen fixation 650 $aSubtropical soils 650 $aArroz 650 $aFixação de Nitrogênio 650 $aInoculante 650 $aNitrogênio 653 $aDiazotrophic bacteria 700 1 $aMATTOS, M. L. T. 773 $tJournal of Agriculture and Rural Development in the Tropics and Subtropics$gv. 124, n. 1, p. 57-63, 2023.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
21/12/1998 |
Data da última atualização: |
21/12/1998 |
Autoria: |
HUTTON, E. M.; SOUZA, F. B. de. |
Título: |
Degeneration of Cunningham leucaena in an acid oxisol. |
Ano de publicação: |
1986 |
Fonte/Imprenta: |
Leucaena Research Reports, v.7, p.28-33, 1986. |
Idioma: |
Inglês |
Palavras-Chave: |
Cultivar Cunningham. |
Thesagro: |
Cerrado; Leucaena Leucocephala; Oxisol; Solo Ácido. |
Thesaurus NAL: |
acid soils; Ferralsols. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00542naa a2200205 a 4500 001 1544276 005 1998-12-21 008 1986 bl --- 0-- u #d 100 1 $aHUTTON, E. M. 245 $aDegeneration of Cunningham leucaena in an acid oxisol. 260 $c1986 650 $aacid soils 650 $aFerralsols 650 $aCerrado 650 $aLeucaena Leucocephala 650 $aOxisol 650 $aSolo Ácido 653 $aCultivar Cunningham 700 1 $aSOUZA, F. B. de 773 $tLeucaena Research Reports$gv.7, p.28-33, 1986.
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