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首页> 外文期刊>Western Society of Weed Science.Research Progress Report >Topramezone, dicamba, saflufenacil, and dimethenamid for sequential weed control in corn
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Topramezone, dicamba, saflufenacil, and dimethenamid for sequential weed control in corn

机译：Topramezone，Dicamba，Saflufenacil和Dimethenamid用于玉米中的顺序杂草控制

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摘要

An experiment conducted at the Kansas State University Southwest Research-Extension Center near Garden City, KS evaluated sequential (preemergence followed by postemergence) herbicide applications for weed control in corn. A single early postemergencetreatment was included for comparison purposes, and was applied when the corn had two visible leaf collars (V2). The postemergence treatments were applied when corn had five visible leaf collars (V5). Application dates and environmental conditions are shown in Table 1. All herbicides were applied using a tractor-mounted or backpack delivering 19.5 or 20 gpa at 3.0 mph and 30 or 27 psi. Plot sizes were 10 by 35 feet, and were arranged in a randomized complete block design with four replications. Soil was a Ulysses silt loam with 1.4% organic matter, pH of 8.0, and cation exchange capacity of 18.4. Visual weed control was determined June 17 and August 18, 2016, which was 1 and 63 days after the postemergence applications (DA-C). Yields were determined on September 26, 2016 by mechanically harvesting the center two rows of each plot and adjusting weights to 15.5% moisture.
机译：在Kansas State University Southwest Gression-Extense-Extense-Extense-Extend中心进行的实验，KS评估顺序（前后疗程）除草剂应用在玉米中的杂草控制。包括比较目的的单一早期的后期后病灶，并且当玉米有两个可见的叶项圈（V2）时施加。当玉米有五个可见的叶项圈（V5）时，施用了后期治疗。应用日期和环境条件如表1所示。使用拖拉机安装或背包以3.0英里/小时和30或27psi递送19.5或20GPa的所有除草剂。绘图大小为35英尺，并以三种复制的随机完整块设计排列。土壤是含有1.4％有机物质，pH值的含有1.4％的含硅壤土，阳离子交换能力为18.4。视觉杂草控制于2016年6月17日和2016年8月18日确定，在后期后的应用（DA-C）之后是1和63天。通过机械地收集每种曲线的中心两排并将重量调节至15.5％的水分，在2016年9月26日确定产量。

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