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| 1. |  | KAHWAGE, P.R.; GARCIA, A.R.; GUIMARÃES, D.A. de A.; OHASHI, O.M.; LUZ- RAMOS, R.S.; DIAS, H.L.; ALBUQUERQUE, N.I. de; BARTHA, M.M. P. Biometria testicular, eletroejaculação e caracteristicas seminais de caititus, Tayassu tajacu Linnaeus, 1758 (Mammalia, Artiodactyla, Tayassuidae) mantidos em catveiro na Amazônia Oriental. Acta Amazonica, Manaus, v. 40, n. 4. p. 771-778, dez. 2010.| Biblioteca(s): Epagri-Sede. |
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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
07/12/2020 |
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Data da última atualização: |
07/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
OLIVEIRA NETO, A. M.; GUERRA, N.; NOLDIN, J. A. |
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Título: |
Off-season management with herbicides as an alternative to reduce weed infestation in paddy rice production systems. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Planta Daninha, Londrina, PR, v. 38, p. e020228645, 2020. |
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Idioma: |
Inglês |
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Conteúdo: |
Weed management is a challenge in paddy rice production, mainly due to the dispersal of a population resistant to herbicides.
Objective: To assess the efficacy of chemical weed control in the offseason to reduce weedy rice and other species in water-seeded or drilled
rice.
Methods: Two experiments were carried out in a flat field to water-seeded or drilled rice, in randomized block design. The water-seeded system
treatments were organized in a split-plot design. In the plot were evaluated two water management in the off-season (with or without continuous
flooding), and in the subplot nine herbicides-treatments were evaluated (Check, clomazone at 0.72 and 1.08 kg a.i. ha-1, oxadiazon at 1.00 and
1.50 kg a.i. ha-1, oxyfluorfen at 0.312 and 0.48 kg a.i. ha-1, S-metolachlor at 1.44 kg a.i. ha-1, and flumioxazin a 0.075 kg a.i. ha-1). In the drilled rice experiment, the treatments were organized in a two-factor factorial. The factor A was nine herbicides treatments (the same herbicide and rates
applied in water-seeded experiment) and the factor B was two application time (73 and 43 days before of rice-sowing).
Results: Off-season management was efficient to reduce weedy rice infestation only on the paddy rice system using the pre-germinated seeds.
In this assay, flumioxazin was an efficient alternative to giant arrowhead control, however the selectivity of this herbicide treatment needs to be
studied. In dry-seeded system, herbicide sprayed in off-season reduced barnyardgrass infestation until the paddy rice sowing.
Conclusions: The off-season management was efficient to reduce weedy rice and giant arrowhead infestation in water-seeded system, and
barnyardgrass infestation in drill-seeded system. MenosWeed management is a challenge in paddy rice production, mainly due to the dispersal of a population resistant to herbicides.
Objective: To assess the efficacy of chemical weed control in the offseason to reduce weedy rice and other species in water-seeded or drilled
rice.
Methods: Two experiments were carried out in a flat field to water-seeded or drilled rice, in randomized block design. The water-seeded system
treatments were organized in a split-plot design. In the plot were evaluated two water management in the off-season (with or without continuous
flooding), and in the subplot nine herbicides-treatments were evaluated (Check, clomazone at 0.72 and 1.08 kg a.i. ha-1, oxadiazon at 1.00 and
1.50 kg a.i. ha-1, oxyfluorfen at 0.312 and 0.48 kg a.i. ha-1, S-metolachlor at 1.44 kg a.i. ha-1, and flumioxazin a 0.075 kg a.i. ha-1). In the drilled rice experiment, the treatments were organized in a two-factor factorial. The factor A was nine herbicides treatments (the same herbicide and rates
applied in water-seeded experiment) and the factor B was two application time (73 and 43 days before of rice-sowing).
Results: Off-season management was efficient to reduce weedy rice infestation only on the paddy rice system using the pre-germinated seeds.
In this assay, flumioxazin was an efficient alternative to giant arrowhead control, however the selectivity of this herbicide treatment needs to be
studied. In dry-seeded system, herbicide sprayed in off-season reduced barnyardgrass... Mostrar Tudo |
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Palavras-Chave: |
drill-seeded; Oryza sativa; pre-germinated; residual herbicides; water-seeded. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02363naa a2200205 a 4500
001 1130416
005 2020-12-07
008 2020 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA NETO, A. M.
245 $aOff-season management with herbicides as an alternative to reduce weed infestation in paddy rice production systems.$h[electronic resource]
260 $c2020
520 $aWeed management is a challenge in paddy rice production, mainly due to the dispersal of a population resistant to herbicides. Objective: To assess the efficacy of chemical weed control in the offseason to reduce weedy rice and other species in water-seeded or drilled rice. Methods: Two experiments were carried out in a flat field to water-seeded or drilled rice, in randomized block design. The water-seeded system treatments were organized in a split-plot design. In the plot were evaluated two water management in the off-season (with or without continuous flooding), and in the subplot nine herbicides-treatments were evaluated (Check, clomazone at 0.72 and 1.08 kg a.i. ha-1, oxadiazon at 1.00 and 1.50 kg a.i. ha-1, oxyfluorfen at 0.312 and 0.48 kg a.i. ha-1, S-metolachlor at 1.44 kg a.i. ha-1, and flumioxazin a 0.075 kg a.i. ha-1). In the drilled rice experiment, the treatments were organized in a two-factor factorial. The factor A was nine herbicides treatments (the same herbicide and rates applied in water-seeded experiment) and the factor B was two application time (73 and 43 days before of rice-sowing). Results: Off-season management was efficient to reduce weedy rice infestation only on the paddy rice system using the pre-germinated seeds. In this assay, flumioxazin was an efficient alternative to giant arrowhead control, however the selectivity of this herbicide treatment needs to be studied. In dry-seeded system, herbicide sprayed in off-season reduced barnyardgrass infestation until the paddy rice sowing. Conclusions: The off-season management was efficient to reduce weedy rice and giant arrowhead infestation in water-seeded system, and barnyardgrass infestation in drill-seeded system.
653 $adrill-seeded
653 $aOryza sativa
653 $apre-germinated
653 $aresidual herbicides
653 $awater-seeded
700 1 $aGUERRA, N.
700 1 $aNOLDIN, J. A.
773 $tPlanta Daninha, Londrina, PR$gv. 38, p. e020228645, 2020.
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