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首页> 外文期刊>Weed technology >Sicklepod (Senna obtusifolia) Control in Soybean (Glycine max) with Imazaquin and Metribuzin Combinations
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Sicklepod (Senna obtusifolia) Control in Soybean (Glycine max) with Imazaquin and Metribuzin Combinations

机译：含Imazaquin和Metribuzin组合的大豆（Glycine max）中的镰刀类（Senna obtusifolia）防治

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摘要

Field studies were conducted in 1993 and 1994 to evaluate sicklepod control with combinations of imazaquin + metribuzin at lower than normal use rates. Soybean was seeded in late-May to early-June each year and imazaquin and metribuzin were applied PPI alone at 0.75 and 1 x and 0.5, 0.75, and 1 x their registered rates, respectively, and in factorial combinations of their 0.5 and 0.75 x rates. The registered (1 x) rates for imazaquin and metribuzin on this soil type are 0.14 and 0.43 kg/ha, respectively. Several standard sequential treatments and flumetsulam + trifluralin PPI at 0.06 + 0.70 and 0.07 + 0.95 kg/ha were included for comparison. Sicklepod control and soybean seed yield responses differed between 1993 and 1994. In 1993, the combinations of imazaquin + metribuzin averaged 90% control 6 wk after planting (WAP) and soybean seed yield increased 75% compared to the untreated check. Imazaquin + metribuzin at their respective 0.5 x rate was as effective as any treatment evaluated. In 1994, sicklepod control was generally lower with all treatments. Soybean seed yield was reduced due to sicklepod interference with soil-applied treatments alone. However, imazaquin + metribuzin at their respective 0.75 x rate provided sicklepod control levels and reductions in weed biomass similar to those observed with flumetsulam + trifluralin at 0.07 + 0.95 kg/ha and the sequential treatments, and increased soybean seed yield 19% compared to the untreated check.
机译：在1993年和1994年进行了野外研究，以评估比正常使用率低的阿马西喹+美特津的组合对镰刀鱼的控制。每年的5月下旬至6月初播种大豆，分别以0.75和1 x和0.5、0.75和1 x的注册比率单独施用imazaquin和metribuzin PPI，并以0.5和0.75 x的因子组合施用费率。在这种土壤类型上，吡虫啉和美沙津的登记（1 x）比率分别为0.14和0.43 kg / ha。为了进行比较，还包括几种标准序贯处理方法和氟美他仑+三氟拉林PPI分别为0.06 + 0.70和0.07 + 0.95 kg / ha。镰刀鱼的防治效果和大豆种子产量的反应在1993年和1994年之间有所不同。1993年，在种植后6周（WAP）联合使用imazaquin + metribuzin的平均控制率为90％，与未处理的对照相比，大豆种子的产量提高了75％。分别以0.5倍的速率服用Izazaquin + metribuzin与评估的任何治疗一样有效。 1994年，所有治疗方法对镰刀菌的控制普遍较低。单独使用土壤处理的镰刀菌会干扰大豆种子的产量。但是，与0.75 mg / hm2的氟美司他+三氟拉林和序贯处理相比，阿马西喹+美特津分别以0.75倍的速率提供了镰刀菌的控制水平和杂草生物量的减少，与使用氟美司他+三氟拉林和顺序处理相比，大豆种子的产量增加了19％。未经处理的支票。

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