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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
04/05/2016 |
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Data da última atualização: |
03/03/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALVAREZ, R. de C. F.; CRUSCIOL, C. A. C.; NASCENTE, A. S.; RODRIGUES, J. D.; HABERMANN, G.; PAIVA NETO, V. B. de. |
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Afiliação: |
RITA DE CASSIA FELIX ALVAREZ, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; CARLOS ALEXANDRE COSTA CRUSCIOL, UNESP, Botucatu-SP; ADRIANO STEPHAN NASCENTE, CNPAF; JOÃO DOMINGOS RODRIGUES, UNESP, Botucatu-SP; GUSTAVO HABERMANN, UNESP, Rio Claro-SP; VESPASIANO BORGES DE PAIVA NETO, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL. |
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Título: |
Trinexapac-ethyl affects growth and gas exchange of upland rice. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Revista Caatinga, Mossoró, v. 29, n. 2, p. 320-326, abr./jun. 2016. |
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ISSN: |
1983-2125 |
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Idioma: |
Inglês |
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Conteúdo: |
A major problem affecting some upland rice cultivars is the increase in plant size when subjected to high doses of nitrogen fertilizer, leading to high levels of lodging. A method to reduce the height of upland rice, and therefore lodging, would be to use plant growth regulators. However, little information exists on the effect of these regulators on plant physiological processes. Therefore, the objective of this study was to evaluate the influence of trinexapac-ethyl application in upland rice via analysis of growth and gas exchange. The experiment was carried out under greenhouse conditions using the BRS Primavera cultivar. A completely randomized design with eight replications was used. Treatments were carried out with and without the application of the plant growth regulator, and plants were subject to two-stage assessments in which physiological and gas-exchange indices were measured. The use of trinexapac-ethyl improved the growth of rice plants from the flowering to the physiological maturity stage, resulting in higher values of leaf area ratio, specific leaf area, and leaf matter ratio in treated plants. At the same time, it provided smaller reduction in net CO2 assimilation at the physiological maturity stage. Thus, net/apparent assimilation rate did not change after the application of growth regulator, but relative growth rate decreased in these treated plants. These results indicate the occurrence of self-shading in rice plants induced by what might be a supra-optimum trinexapac-ethyl concentration. MenosA major problem affecting some upland rice cultivars is the increase in plant size when subjected to high doses of nitrogen fertilizer, leading to high levels of lodging. A method to reduce the height of upland rice, and therefore lodging, would be to use plant growth regulators. However, little information exists on the effect of these regulators on plant physiological processes. Therefore, the objective of this study was to evaluate the influence of trinexapac-ethyl application in upland rice via analysis of growth and gas exchange. The experiment was carried out under greenhouse conditions using the BRS Primavera cultivar. A completely randomized design with eight replications was used. Treatments were carried out with and without the application of the plant growth regulator, and plants were subject to two-stage assessments in which physiological and gas-exchange indices were measured. The use of trinexapac-ethyl improved the growth of rice plants from the flowering to the physiological maturity stage, resulting in higher values of leaf area ratio, specific leaf area, and leaf matter ratio in treated plants. At the same time, it provided smaller reduction in net CO2 assimilation at the physiological maturity stage. Thus, net/apparent assimilation rate did not change after the application of growth regulator, but relative growth rate decreased in these treated plants. These results indicate the occurrence of self-shading in rice plants induced by what might be a supra-opt... Mostrar Tudo |
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Palavras-Chave: |
Processo fisiológico. |
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Thesagro: |
Arroz; Fertilizante nitrogenado; Oryza sativa; Regulador de crescimento. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/142781/1/CNPAF-2016-c.pdf
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Marc: |
LEADER 02285naa a2200253 a 4500
001 2044456
005 2017-03-03
008 2016 bl uuuu u00u1 u #d
022 $a1983-2125
100 1 $aALVAREZ, R. de C. F.
245 $aTrinexapac-ethyl affects growth and gas exchange of upland rice.$h[electronic resource]
260 $c2016
520 $aA major problem affecting some upland rice cultivars is the increase in plant size when subjected to high doses of nitrogen fertilizer, leading to high levels of lodging. A method to reduce the height of upland rice, and therefore lodging, would be to use plant growth regulators. However, little information exists on the effect of these regulators on plant physiological processes. Therefore, the objective of this study was to evaluate the influence of trinexapac-ethyl application in upland rice via analysis of growth and gas exchange. The experiment was carried out under greenhouse conditions using the BRS Primavera cultivar. A completely randomized design with eight replications was used. Treatments were carried out with and without the application of the plant growth regulator, and plants were subject to two-stage assessments in which physiological and gas-exchange indices were measured. The use of trinexapac-ethyl improved the growth of rice plants from the flowering to the physiological maturity stage, resulting in higher values of leaf area ratio, specific leaf area, and leaf matter ratio in treated plants. At the same time, it provided smaller reduction in net CO2 assimilation at the physiological maturity stage. Thus, net/apparent assimilation rate did not change after the application of growth regulator, but relative growth rate decreased in these treated plants. These results indicate the occurrence of self-shading in rice plants induced by what might be a supra-optimum trinexapac-ethyl concentration.
650 $aArroz
650 $aFertilizante nitrogenado
650 $aOryza sativa
650 $aRegulador de crescimento
653 $aProcesso fisiológico
700 1 $aCRUSCIOL, C. A. C.
700 1 $aNASCENTE, A. S.
700 1 $aRODRIGUES, J. D.
700 1 $aHABERMANN, G.
700 1 $aPAIVA NETO, V. B. de
773 $tRevista Caatinga, Mossoró$gv. 29, n. 2, p. 320-326, abr./jun. 2016.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
12/10/2022 |
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Data da última atualização: |
03/02/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
MARIN, F. R.; ZANON, A. J.; MONZON, J. P.; ANDRADE, J. F.; SILVA, E. H. F. M.; RICHTER, G. L.; ANTOLIN, L. A. S.; RIBEIRO, B. S. M. R.; RIBAS, G. G.; BATTISTI, R.; HEINEMANN, A. B.; GRASSINI, P. |
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Afiliação: |
FABIO R. MARIN, ESALQ; ALENCAR J. ZANON, UNIVERSIDADE FEDERAL DE SANTA MARIA; JUAN P. MONZON, UNIVERSIT OF NEBRASKA; JOSÉ F. ANDRADE, UNIVERSITY OF NEBRASKA; EVANDRO H. F. M. SILVA, ESALQ; GEAN L. RICHTER, UNIVERSIDADE FEDERAL DE SANTA MARIA; LUIS A. S. ANTOLIN, ESALQ; BRUNA S. M. R. RIBEIRO, UNIVERSIDADE FEDERAL DE SANTA MARIA; GIOVANA G. RIBAS, UNIVERSIDADE FEDERAL DE SANTA MARIA; RAFAEL BATTISTI, UNIVERSIDADE FEDERAL DE GOIÁS; ALEXANDRE BRYAN HEINEMANN, CNPAF; PATRICIO GRASSINI, UNIVERSITY OF NEBRASKA. |
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Título: |
Protecting the Amazon forest and reducing global warming via agricultural intensification. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Nature Sustainability, v. 5, p. 1018-1026, Dec. 2022. |
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ISSN: |
2398-9629 |
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DOI: |
https://doi.org/10.1038/s41893-022-00968-8 |
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Idioma: |
Inglês |
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Conteúdo: |
The Amazon basin includes 550 Mha covered with rainforests, and 60% of this area is in Brazil. The conversion of rainforest for soybean production raises concerns about how Brazil can reconcile production and environmental goals. Here we investigated the degree to which intensification could help Brazil produce more soybean without further encroachment on the Amazon forest. Our analysis shows that the continuation of current trends in soybean yield and area would lead to the conversion of an additional 5.7 Mha of forests and savannahs during the next 15 years, with an associated 1,955 Mt of CO2e released into the atmosphere. In contrast, the acceleration of yield improvement, coupled with the expansion of soybean area only in areas currently used for livestock production, would allow Brazil to produce 162 Mt of soybean without deforestation and with 58% lower global climate warming relative to that derived from the continuation of current trends. |
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Thesagro: |
Proteção Florestal; Soja. |
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Thesaurus NAL: |
Crop yield; Forest plantations; Global warming; Land use change; Soybeans; Sustainable agricultural intensification; Yields. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02074naa a2200385 a 4500
001 2147300
005 2023-02-03
008 2022 bl uuuu u00u1 u #d
022 $a2398-9629
024 7 $ahttps://doi.org/10.1038/s41893-022-00968-8$2DOI
100 1 $aMARIN, F. R.
245 $aProtecting the Amazon forest and reducing global warming via agricultural intensification.$h[electronic resource]
260 $c2022
520 $aThe Amazon basin includes 550 Mha covered with rainforests, and 60% of this area is in Brazil. The conversion of rainforest for soybean production raises concerns about how Brazil can reconcile production and environmental goals. Here we investigated the degree to which intensification could help Brazil produce more soybean without further encroachment on the Amazon forest. Our analysis shows that the continuation of current trends in soybean yield and area would lead to the conversion of an additional 5.7 Mha of forests and savannahs during the next 15 years, with an associated 1,955 Mt of CO2e released into the atmosphere. In contrast, the acceleration of yield improvement, coupled with the expansion of soybean area only in areas currently used for livestock production, would allow Brazil to produce 162 Mt of soybean without deforestation and with 58% lower global climate warming relative to that derived from the continuation of current trends.
650 $aCrop yield
650 $aForest plantations
650 $aGlobal warming
650 $aLand use change
650 $aSoybeans
650 $aSustainable agricultural intensification
650 $aYields
650 $aProteção Florestal
650 $aSoja
700 1 $aZANON, A. J.
700 1 $aMONZON, J. P.
700 1 $aANDRADE, J. F.
700 1 $aSILVA, E. H. F. M.
700 1 $aRICHTER, G. L.
700 1 $aANTOLIN, L. A. S.
700 1 $aRIBEIRO, B. S. M. R.
700 1 $aRIBAS, G. G.
700 1 $aBATTISTI, R.
700 1 $aHEINEMANN, A. B.
700 1 $aGRASSINI, P.
773 $tNature Sustainability$gv. 5, p. 1018-1026, Dec. 2022.
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Embrapa Arroz e Feijão (CNPAF) |
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