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| 5. |  | LEITE, C. A. M.; MUKOLE, K.; OLIVEIRA, E. B. de; LIMA, J. E. de. Distribuicao de renda de agricultores da zona da mata, Minas Gerais - 1977/84. Revista Ceres, Vicosa, v. 35, n. 201, p. 494-512, set./out. 1988.| Biblioteca(s): Epagri-Sede. |
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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
20/09/2021 |
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Data da última atualização: |
20/09/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
AVILA, L. A.; MARCHESAN, E.; CAMARGO, E. R.; MEROTTO JÚNIOR, A.; ULGUIM, A. R.; NOLDIN, J. A.; ANDRES, A.; MARIOT, C. H.; AGOSTINETTO, D.; DORNELLES, S. H.; MARKUS, C. |
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Título: |
Eighteen years of Clearfield? rice in Brazil: what have we learned? |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Weed Science, London, UK, v. 69, n. 5, p. 585-597, 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
Clearfield? (CL) rice (Oryza sativa L.) is a weedy rice (Oryza spp.; synonym = red rice) control tool that has been used in Brazil since 2003. This system includes the use of an imidazolinone (IMI)-tolerant cultivar and the application of IMI herbicides. In this review article, Brazilian weed scientists evaluate the challenges and lessons learned over 18 yr of CL use. CL system benefits include selective weedy rice control, better crop establishment during the most advantageous period of the year, and more efficient fertilizer use. In Rio Grande do Sul state, the CL system, in conjunction with other improvements, has contributed to rice grain yield gains from 5,500 kg ha−1 before 2002 to around 8,400 kg ha−1 currently. In contrast, the main problem that has arisen over this period is the rapid evolution of IMI-resistant weedy rice, caused by gene flow from CL rice cultivars. The off-label use (rate and continuous use) of IMI herbicides has contributed to the evolution of resistance in Echinochloa spp. and other weeds. IMI herbicidecarryover has also affected susceptible crops grown after CL rice. Crop rotation with soybean [Glycine max (L.) Merr.] is increasing, ensuring system sustainability. The importance of minimum tillage has also become apparent. Such cultivation includes applying nonselective herbicides before sowing or just before crop emergence (at the spiking stage to eliminate as much weedy rice as possible and other weeds at an early growth stage). It also includes the use of certified seeds free of weedy rice, following label instructions for IMI herbicides, applying the herbicide PRE followed by POST, and complementary weedy rice management practices, such as roguing of surviving weedy rice plants. MenosClearfield? (CL) rice (Oryza sativa L.) is a weedy rice (Oryza spp.; synonym = red rice) control tool that has been used in Brazil since 2003. This system includes the use of an imidazolinone (IMI)-tolerant cultivar and the application of IMI herbicides. In this review article, Brazilian weed scientists evaluate the challenges and lessons learned over 18 yr of CL use. CL system benefits include selective weedy rice control, better crop establishment during the most advantageous period of the year, and more efficient fertilizer use. In Rio Grande do Sul state, the CL system, in conjunction with other improvements, has contributed to rice grain yield gains from 5,500 kg ha−1 before 2002 to around 8,400 kg ha−1 currently. In contrast, the main problem that has arisen over this period is the rapid evolution of IMI-resistant weedy rice, caused by gene flow from CL rice cultivars. The off-label use (rate and continuous use) of IMI herbicides has contributed to the evolution of resistance in Echinochloa spp. and other weeds. IMI herbicidecarryover has also affected susceptible crops grown after CL rice. Crop rotation with soybean [Glycine max (L.) Merr.] is increasing, ensuring system sustainability. The importance of minimum tillage has also become apparent. Such cultivation includes applying nonselective herbicides before sowing or just before crop emergence (at the spiking stage to eliminate as much weedy rice as possible and other weeds at an early growth stage). It... Mostrar Tudo |
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Palavras-Chave: |
Integrated weed management; red rice; resistance to imidazolinone herbicides; sustainable weed management; weed resistance. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02627naa a2200301 a 4500
001 1131229
005 2021-09-20
008 2021 bl uuuu u00u1 u #d
100 1 $aAVILA, L. A.
245 $aEighteen years of Clearfield? rice in Brazil$bwhat have we learned?$h[electronic resource]
260 $c2021
520 $aClearfield? (CL) rice (Oryza sativa L.) is a weedy rice (Oryza spp.; synonym = red rice) control tool that has been used in Brazil since 2003. This system includes the use of an imidazolinone (IMI)-tolerant cultivar and the application of IMI herbicides. In this review article, Brazilian weed scientists evaluate the challenges and lessons learned over 18 yr of CL use. CL system benefits include selective weedy rice control, better crop establishment during the most advantageous period of the year, and more efficient fertilizer use. In Rio Grande do Sul state, the CL system, in conjunction with other improvements, has contributed to rice grain yield gains from 5,500 kg ha−1 before 2002 to around 8,400 kg ha−1 currently. In contrast, the main problem that has arisen over this period is the rapid evolution of IMI-resistant weedy rice, caused by gene flow from CL rice cultivars. The off-label use (rate and continuous use) of IMI herbicides has contributed to the evolution of resistance in Echinochloa spp. and other weeds. IMI herbicidecarryover has also affected susceptible crops grown after CL rice. Crop rotation with soybean [Glycine max (L.) Merr.] is increasing, ensuring system sustainability. The importance of minimum tillage has also become apparent. Such cultivation includes applying nonselective herbicides before sowing or just before crop emergence (at the spiking stage to eliminate as much weedy rice as possible and other weeds at an early growth stage). It also includes the use of certified seeds free of weedy rice, following label instructions for IMI herbicides, applying the herbicide PRE followed by POST, and complementary weedy rice management practices, such as roguing of surviving weedy rice plants.
653 $aIntegrated weed management
653 $ared rice
653 $aresistance to imidazolinone herbicides
653 $asustainable weed management
653 $aweed resistance
700 1 $aMARCHESAN, E.
700 1 $aCAMARGO, E. R.
700 1 $aMEROTTO JÚNIOR, A.
700 1 $aULGUIM, A. R.
700 1 $aNOLDIN, J. A.
700 1 $aANDRES, A.
700 1 $aMARIOT, C. H.
700 1 $aAGOSTINETTO, D.
700 1 $aDORNELLES, S. H.
700 1 $aMARKUS, C.
773 $tWeed Science, London, UK$gv. 69, n. 5, p. 585-597, 2021.
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