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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
05/05/2014 |
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Data da última atualização: |
05/05/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HUNGRIA, M.; MENDES, I. C.; NAKATANI, A. S.; REIS-JUNIOR, F. B. dos; MORAIS, J. Z.; OLIVEIRA, M. C. N. de; FERNANDES, M. F. |
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Afiliação: |
MARIANGELA HUNGRIA DA CUNHA, CNPSO; IEDA DE CARVALHO MENDES, CPAC; ANDRÉ SHIGUEYOSHI NAKATANI, CNPq - pós-doutorado; FABIO BUENO DOS REIS JUNIOR, CPAC; JOSE ZUCCA MORAIS, CNPSO; MARIA CRISTINA NEVES DE OLIVEIRA, CNPSO; MARCELO FERREIRA FERNANDES, CPATC. |
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Título: |
Effects of the glyphosate-resistance gene and herbicides on soybean: field trials monitoring biological nitrogen fixation and yield. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Field Crops Research, v. 158, p. 43-54, 2014. |
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DOI: |
10.1016/j.fcr.2013.12.022 |
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Idioma: |
Inglês |
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Conteúdo: |
The commercial use of glyphosate-resistant (also known as Roundup Ready®, GR or RR) soybean wasinitiated in 1996 in the United States. This genetically engineered crop now occupies 75.4 million haworldwide, 20.6 million of which are in Brazil where it occupies 86% of the total area cropped with thelegume. Biological nitrogen fixation (BNF) is critical for economic sustainability of soybean in Brazil;therefore, to investigate the effects of the RR gene?using pairs of nearly isogenic cultivars?and herbi-cides on BNF, we conducted an extensive series of field experiments for three cropping seasons. Theexperiments were set up at six sites with five treatments, three pairs of nearly isogenic cultivars, andsix replicates. The treatments consisted of: (T1) RR soybean + glyphosate; (T2) RR soybean + conventionalherbicides; (T3) conventional parental soybean + conventional herbicides; (T4) RR soybean + hand weedcontrol; and (T5) conventional parental soybean + hand weed control. Parameters of nodulation, plantbiomass production, total N and ureide-N were evaluated at the V4 and R2 stages of growth, and grainyield and total N in grains were evaluated at crop maturity. Data were analyzed by ANOVA, analysesof contrasts, and multivariate analyses considering a pool of six variables, denominated as symbioticefficiency (SyEf). The comparison of the pairs of non-transgenic and RR soybean cultivars showed thatthe transgenic trait negatively affected some BNF variables, but over a three-year period these effectshad no significant impact on soybean grain yield. No consistent differences between glyphosate andconventional herbicide application were observed on BNF-associated parameters. When compared toconventional soybean and conventional herbicides, weed-management strategy with RR soybean andglyphosate did not affect symbiotic efficiency. In addition, at three sites, grain yields increased in thetreatments with glyphosate and RR soybean over the three cropping seasons. The results from the multi-variate analyses indicate that BNF and yield parameters were more affected by location, cropping seasonand cultivar than by the transgene, herbicides, or weed-management strategy. Despite the lack of effectsof the transgene on yield in the three-year period, longer-term effects on BNF and N accumulation shouldbe monitored. MenosThe commercial use of glyphosate-resistant (also known as Roundup Ready®, GR or RR) soybean wasinitiated in 1996 in the United States. This genetically engineered crop now occupies 75.4 million haworldwide, 20.6 million of which are in Brazil where it occupies 86% of the total area cropped with thelegume. Biological nitrogen fixation (BNF) is critical for economic sustainability of soybean in Brazil;therefore, to investigate the effects of the RR gene?using pairs of nearly isogenic cultivars?and herbi-cides on BNF, we conducted an extensive series of field experiments for three cropping seasons. Theexperiments were set up at six sites with five treatments, three pairs of nearly isogenic cultivars, andsix replicates. The treatments consisted of: (T1) RR soybean + glyphosate; (T2) RR soybean + conventionalherbicides; (T3) conventional parental soybean + conventional herbicides; (T4) RR soybean + hand weedcontrol; and (T5) conventional parental soybean + hand weed control. Parameters of nodulation, plantbiomass production, total N and ureide-N were evaluated at the V4 and R2 stages of growth, and grainyield and total N in grains were evaluated at crop maturity. Data were analyzed by ANOVA, analysesof contrasts, and multivariate analyses considering a pool of six variables, denominated as symbioticefficiency (SyEf). The comparison of the pairs of non-transgenic and RR soybean cultivars showed thatthe transgenic trait negatively affected some BNF variables, but over a three-year ... Mostrar Tudo |
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Thesagro: |
Fixação de nitrogênio; Herbicida; Soja. |
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Thesaurus Nal: |
Herbicides; Nitrogen fixation; Soybeans. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 03161naa a2200277 a 4500
001 1985572
005 2014-05-05
008 2014 bl --- 0-- u #d
024 7 $a10.1016/j.fcr.2013.12.022$2DOI
100 1 $aHUNGRIA, M.
245 $aEffects of the glyphosate-resistance gene and herbicides on soybean$bfield trials monitoring biological nitrogen fixation and yield.
260 $c2014
520 $aThe commercial use of glyphosate-resistant (also known as Roundup Ready®, GR or RR) soybean wasinitiated in 1996 in the United States. This genetically engineered crop now occupies 75.4 million haworldwide, 20.6 million of which are in Brazil where it occupies 86% of the total area cropped with thelegume. Biological nitrogen fixation (BNF) is critical for economic sustainability of soybean in Brazil;therefore, to investigate the effects of the RR gene?using pairs of nearly isogenic cultivars?and herbi-cides on BNF, we conducted an extensive series of field experiments for three cropping seasons. Theexperiments were set up at six sites with five treatments, three pairs of nearly isogenic cultivars, andsix replicates. The treatments consisted of: (T1) RR soybean + glyphosate; (T2) RR soybean + conventionalherbicides; (T3) conventional parental soybean + conventional herbicides; (T4) RR soybean + hand weedcontrol; and (T5) conventional parental soybean + hand weed control. Parameters of nodulation, plantbiomass production, total N and ureide-N were evaluated at the V4 and R2 stages of growth, and grainyield and total N in grains were evaluated at crop maturity. Data were analyzed by ANOVA, analysesof contrasts, and multivariate analyses considering a pool of six variables, denominated as symbioticefficiency (SyEf). The comparison of the pairs of non-transgenic and RR soybean cultivars showed thatthe transgenic trait negatively affected some BNF variables, but over a three-year period these effectshad no significant impact on soybean grain yield. No consistent differences between glyphosate andconventional herbicide application were observed on BNF-associated parameters. When compared toconventional soybean and conventional herbicides, weed-management strategy with RR soybean andglyphosate did not affect symbiotic efficiency. In addition, at three sites, grain yields increased in thetreatments with glyphosate and RR soybean over the three cropping seasons. The results from the multi-variate analyses indicate that BNF and yield parameters were more affected by location, cropping seasonand cultivar than by the transgene, herbicides, or weed-management strategy. Despite the lack of effectsof the transgene on yield in the three-year period, longer-term effects on BNF and N accumulation shouldbe monitored.
650 $aHerbicides
650 $aNitrogen fixation
650 $aSoybeans
650 $aFixação de nitrogênio
650 $aHerbicida
650 $aSoja
700 1 $aMENDES, I. C.
700 1 $aNAKATANI, A. S.
700 1 $aREIS-JUNIOR, F. B. dos
700 1 $aMORAIS, J. Z.
700 1 $aOLIVEIRA, M. C. N. de
700 1 $aFERNANDES, M. F.
773 $tField Crops Research$gv. 158, p. 43-54, 2014.
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Embrapa Cerrados (CPAC) |
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| 1. |  | NGOLO, A. O.; MOREIRA, S. L. S.; OLIVEIRA, M. F. de; ROCHA, G. C.; ASSIS, I. R. de; FERNANDES, R. B. A. Glomalin-related soil protein after two decades of different tropical soil management. In: WORLD CONGRESS OF SOIL SCIENCE, 21., 2018, Rio de Janeiro. Soil science: beyond food and fuel: abstracts. Viçosa, MG: SBCS, 2018.| Tipo: Resumo em Anais de Congresso |
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