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首页> 外文期刊>Weed technology >Common Waterhemp (Amaranthus rudis) Control in Corn (Lea mays) with Single Preemergence and Sequential Applications of Residual Herbicides
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Common Waterhemp (Amaranthus rudis) Control in Corn (Lea mays) with Single Preemergence and Sequential Applications of Residual Herbicides

机译：单一芽前和顺序施用残留除草剂的玉米（Lea mays）常见Waterhemp（Amaranthus rudis）控制

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摘要

Control of common waterhemp in corn with chloroacetamide and dinitroaniline herbicides can be inconsistent. Common waterhemp control by dimethenamid, S-metalochlor, pendimethalin, and three formulations of acetochlor, applied alone or with atrazine as single preemergence (PRE) or sequential PRE followed by postemergence (POST) treatment, was determined. The manufacturer's suggested use rate (1 time) of PRE herbicides was compared with sequential applications (0.66 time PRE followed by 0.34 time POST) of herbicides. POST applications included dicamba to control emerged common waterhemp. Single and sequential herbicide applications controlled common waterhemp at least 98%, 28 d after planting (DAP). But herbicides applied sequentially were more effective than PRE treatments by 56 DAP. Encapsulated acetochlor formulations controlled common waterhemp at least 85% by 56 DAP regardless of application method. Sequential applications of S-metolachlor controlled common waterhemp greater than 83%. Atrazine improved common water-hemp control regardless of herbicide or application method 56 DAP. Sequential applications of dimethenamid or S-metolachlor alone or with atrazine were more effective than single PRE applications of these herbicides.
机译：用氯乙酰胺和二硝基苯胺类除草剂控制玉米中常见的水h可能不一致。确定了由二甲亚胺，S-金属氯，二甲戊乐灵和三种乙草胺制剂单独或与阿特拉津一起单次出苗（PRE）或先后顺序PRE，随后进行出苗后（POST）处理的常见水温控制措施。将制造商建议的PRE除草剂使用率（1倍）与顺序施用（0.66次PRE，然后0.34次POST）进行比较。 POST应用程序包括麦草畏，以控制出现的常见waterhemp。种植后28 d（DAP），单次和连续除草剂的施用可控制普通水麻至少98％。但是顺序施用除草剂比56 DAP的PRE处理更有效。无论采用何种施用方法，胶囊化乙草胺制剂均能通过56 DAP将普通水温控制在至少85％。连续施用异丙草胺控制的普通水温大于83％。无论使用除草剂或施用方法为56 DAP，去津都能改善常见的水温控制。单独使用二甲烯胺或S-甲草胺或与阿特拉津依次施用比这些除草剂的一次PRE施用更为有效。

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