Evaluation of Glufosinate on Rice (<i>Oryza sativa</i>) Transformed with the BAR Gene and Red Rice (<i>Oryza sativa</i>)

Sankula, Sujatha; Braverman, Michael P.; Jodari, F.; Linscombe, Steven D.; Oard, James H.

doi:10.1017/s0890037x00041361

Cited by 27 publications

(15 citation statements)

References 14 publications

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“…1992). Sankula et al (1997a) reported that glufosinate at 1.1 kglha caused minimal injury to BAR-transformed rice (Oryza sativa L.) compared to nontransformed rice. In addition, yield of transgenic rice was not affected (Sankula et a1.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Glufosinate-Resistant Corn (Zea mays) and Glufosinate: Efficacy on Annual Weeds

et al. 1999

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Field studies were conducted in 1996 and 1997 at Belleville and Pawnee, IL, to evaluate single and sequential applications of glufosinate on tolerance of glufosinate-resistant corn and annual weed control. Glufosinate caused 0 to 13% corn injury 7 days after treatment (DAT) and 0 to 6% corn injury 28 DAT. Injury was characterized as stunting with glufosinate. Glufosinate at 400 to 1,200 g ai/ha did not reduce final corn height or grain yield. At Pawnee in both years and at Belleville in 1996, a single application of glufosinate at 400 g/ha controlled giant foxtail, velvetleaf, ivyleaf morningglory, and common lambsquarters 85 to 100%. At Belleville in 1997, sequential applications of glufosinate provided greater weed control (87 to 100%) than a single application (0 to 63%) because of weed emergence after application. Weed control with a single application of glufosinate or with nicosulfuron plus bromoxynil was similar at both locations. Height and grain yield of glufosinate-resistant corn were not different from that of glufosinate-susceptible corn (isoline of glufosinate-resistant corn).

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Section: Introductionmentioning

confidence: 99%

Evaluation of Glufosinate-Resistant Corn (Zea mays) and Glufosinate: Efficacy on Annual Weeds

et al. 1999

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“…Under greenhouse conditions, glufosinate efficacy was reduced when weedy rice was submerged between 25% and 50% of its height. Height and dry weight of weedy rice plants increased as flood water depth increased regardless of glufosinate dose (Sankula et al, 1997a). Interestingly, in this study Gulfmont transgenic rice was not affected by glufosinate, while 'Koshihikari' lines were injured as much as 53%.…”

Section: Herbicide-resistant Rice and Weed Managementmentioning

confidence: 45%

“…Glufosinate damage to resistant rice is growth-stage dependent, usually being more toxic to younger plants but even late applications, when the crop is more tolerant, still resulted in a 16% yield penalty (Sankula, Braverman & Linscombe, 1997c;Griffin, Linscombe & Zhang, 1999). At the three-to four-leaf stage, injury to weedy rice was up to 11 times higher than the injury caused to the resistant cultivar (Sankula et al, 1997a). Glufosinate toxicity to transgenic rice also increased when it was applied in combination with either triclopyr or acifluorfen.…”

Section: Herbicide-resistant Rice and Weed Managementmentioning

confidence: 95%

Herbicide resistant rice (Oryza sativa L.): Global implications for weedy rice and weed management*

Olofsdotter

Valverde²,

Madsen³

2000

Annals of Applied Biology

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Summary Rice cultivars resistant to broad‐spectrum herbicides have been developed and their commercial release is imminent, especially for imidazolinone and glufosinate resistant varieties in the USA and Latin America. Glyphosate‐resistant rice should follow within a few years. Rice growers throughout the world could benefit from the introduction of herbicide‐resistant rice cultivars that would allow in‐crop, selective control of weedy Oryza species. Other perceived benefits are the possibility to control ‘hard‐to‐kill’ weed species and weed populations that have already evolved resistance to herbicides currently used in rice production, especially those of the Echinochloa species complex. Weed management could also be improved by more efficient post‐emergence control. Introduction of herbicide resistant rice could also bring areas heavily infested with weedy rice that have been abandoned back to rice production, allow longer term crop rotations, reduce consumption of fossil fuels, promote the replacement of traditional chemicals by more environmentally benign products, and provide more rice grain without adding new land to production. There are also concerns, however, about the impact of releasing herbicide‐resistant rice on weed problems. Of most concern is the possibility of rapid transfer of the resistance trait to compatible weedy Oryza species. Development of such herbicide resistant weedy rice populations would substantially limit the chemical weed management options for farmers. Herbicide‐resistant rice volunteers also could become problematic, and added selection pressure to weed populations could aggravate already serious weed resistance problems. Because of the risk of weedy Oryza species becoming resistant to broad‐spectrum herbicides, mitigating measures to prevent gene flow, eventually attainable by both conventional breeding and molecular genetics, have been proposed. With commercialisation of the first herbicide resistant varieties planned for 2001, these mitigating measures will not be available for use with this first generation of herbicide resistant rice products. Release of herbicide resistant rice should depend on a thorough risk assessment especially in areas infested with con‐specific weedy rice or intercrossing weedy Oryza species. Regulators will have to balance risks and benefits based on local needs and conditions before allowing commercialisation of herbicide‐resistant rice varieties. If accepted, these varieties should be considered as components of integrated weed management, and a rational herbicide use and weedy rice control should be promoted to prevent losing this novel tool.

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“…O grau de prejuízo causado pelo arroz vermelho é atribuído a sua habilidade competitiva com o arroz cultivado, podendo causar redução de até 82% no rendimento, segundo Sankula et al (1997). Contudo, neste trabalho a redução de produtividade foi cerca de 95%, em função da elevada população que se estabeleceu na área experimental no segundo ano de pesquisa.…”

Section: Resultsunclassified

Herbicidas não seletivos aplicados na fase de maturação do arroz irrigado

Agostinetto

Fleck

Menezes

2001

Sci. agric. (Piracicaba, Braz.)

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RESUMO: Um dos principais fatores limitantes da exploração do potencial máximo de rendimento do arroz irrigado é a interferência exercida pelo arroz vermelho, uma gramínea daninha. Botanicamente, ambos pertencem a mesma espécie (Oryza sativa L.), o que limita a utilização de herbicidas seletivos para seu controle. Com o objetivo de investigar os efeitos de herbicidas não seletivos, aplicados na fase de maturação do arroz cultivado, sobre características agronômicas da cultura, conduziu-se dois experimentos a campo nas estações de crescimento de 1997/98 e 1998/99, e avaliações em laboratório. Os tratamentos compararam os herbicidas glyphosate, glufosinate e paraquat, aplicados em duas doses e duas épocas, além do regulador de crescimento hidrazida maléica, aplicada também em duas épocas, e testemunha não tratada. Como cultivar de arroz foi utilizada a IRGA-416, de ciclo precoce. As demais práticas de manejo foram aquelas preconizadas para a cultura, a qual desenvolveu-se na presença de arroz vermelho. Avaliaram-se as características do arroz cultivado, rendimento de grãos e seus componentes, rendimento de engenho e antecipação da colheita. Os herbicidas não seletivos glyphosate, glufosinate e paraquat, quando aplicados na fase de maturação fisiológica do arroz cultivado, em geral não afetam negativamente as características agronômicas da cultura e apresentam efeitos equivalentes aos do regulador de crescimento hidrazida maléica. Variações de doses e épocas de aplicação geralmente não se diferenciam quanto à ação. A ação dessecante dos herbicidas apressa a redução da umidade dos grãos de arroz e permite antecipar a colheita. A partir do estádio em que os grãos de arroz cultivado atingem teor de umidade de 34%, o regulador de crescimento hidrazida maléica não afeta negativamente as características da cultura. Palavras-chave: Oryza sativa, arroz vermelho, dessecantes, hidrazida maléica NON-SELECTIVE HERBICIDES APPLIED AT THE MATURITY PHASE OF FLOODED RICEABSTRACT: One of the major limiting factor for increasing flooded rice yield potential is the interference exerted by red rice, a weedy grass. Botanically, both belong to the same species (Oryza sativa L.), which limits the utilization of selective herbicides for the control. With the objetive of investigating the effects of nonselective herbicides applied at the maturity phase of flooded rice, on agronomic characteristics of the crop, two field experiments and also laboratory evaluations were conducted during the growing seasons of 1997/98 and 1998/99. Treatments compared the herbicides glyphosate, glufosinate, and paraquat, applied at two rates and at two times, the growth regulator maleic hydrazide, applied at two times, and one check without applications of chemicals. The rice cultivar tested was IRGA-416, an early maturity variety. The management practices used were those recommended for the crop, which grew in the presence of a red rice infestation. Cultivated rice characteristics evaluated were grain yield and its components, milling yield and harvest anticip...

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Evaluation of Glufosinate on Rice (Oryza sativa) Transformed with the BAR Gene and Red Rice (Oryza sativa)

Cited by 27 publications

References 14 publications

Evaluation of Glufosinate-Resistant Corn (Zea mays) and Glufosinate: Efficacy on Annual Weeds

Evaluation of Glufosinate-Resistant Corn (Zea mays) and Glufosinate: Efficacy on Annual Weeds

Herbicide resistant rice (Oryza sativa L.): Global implications for weedy rice and weed management*

Herbicidas não seletivos aplicados na fase de maturação do arroz irrigado

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