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首页> 外文期刊>Weed Technology: A journal of the Weed Science Society of America >Doveweed (Murdannia nudiflora) response to metsulfuron-methyl, trifloxysulfuron-sodium, and bentazon combinations
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Doveweed (Murdannia nudiflora) response to metsulfuron-methyl, trifloxysulfuron-sodium, and bentazon combinations

机译：Doveweed (Murdannia nudiflora) response to metsulfuron-methyl, trifloxysulfuron-sodium, and bentazon combinations

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摘要

Doveweed is a problematic weed species in many agricultural ecosystems as well as on roadsides and rights-of-way. Effective POST chemical control options for doveweed are limited in many cropping systems. Greenhouse studies were conducted to evaluate the effectiveness of metsulfuron-methyl dose and the impact of mixtures and sequential applications of either trifloxysulfuron-sodium or bentazon with metsulfuron-methyl for doveweed control. By 14 d after the initial treatment, applying 0.04 kg ai ha(-1) metsulfuron-methyl, either once or sequentially, provided 100% control of doveweed. Application of trifloxysulfuron-sodium at 0.04 kg ai ha(-1) alone or in mixture with metsulfuron-methyl (0.04 kg ha(-1)) did not provide consistent doveweed control nor did it reduce biomass. Trifloxysulfuron-sodium applied alone at 0.08 kg ha(-1) or in a mixture with metsulfuron-methyl (0.04 kg ha(-1)) provided consistent doveweed control (>80%). A single application of bentazon (0.56 kg ai ha(-1)) was ineffective at controlling doveweed. A single application of the bentazon and metsulfuron-methyl mixture (0.56 + 0.04 kg ha(-1), respectively) or sequential applications of either bentazon alone (0.56 kg ha(-1)) or in mixture with metsulfuron-methyl (0.04 kg ha(-1)) provided excellent doveweed control (100%) by 35 d after treatment. Overall, single applications of metsulfuron-methyl (0.02 to 0.17 kg ha(-1)) or mixtures of metsulfuron-methyl with trifloxysulfuron-sodium (0.04 + 0.08 kg ha(-1), respectively) or bentazon (0.04 + 0.56 kg ha(-1), respectively) controlled doveweed and may be useful for enhancing the control spectrum for other weeds. Sequential applications of the bentazon and metsulfuron-methyl mixture (0.56 + 0.04 kg ha(-1), respectively) provided doveweed control and are a resistance-management strategy for doveweed.

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