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Comparison of Spray Drift During Postemergence Herbicide Applications to Turfgrass

机译：草坪草出苗后除草剂喷洒漂移的比较

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摘要

Field tests showed that the lawn spray-gun with a 4 gpm lawn tip reduced the percentage of application volume deposited 90 cm to 210 cm downwind from the spray swath edge when compared with XR8004 flat-fan or RA-6 wide angle hollow cone applications at wind speeds between 4.7 and 14.4 km/h. The percentage of applied volume collected at 210 cm downwind from the XR8004 flat-fan applications was 5 and 16 times greater than the percentage from the RA-6 Raindrop nozzle and lawn spray-gun applications, respectively. Visible injury along with height increases and fresh weights from tomato plants located downwind from the applications concur with spray-drift data for all nozzle types. Triclopyr injury decreased as the distance from the swath edge increased. All tomato plants located downwind up to 210 cm from the XR8004 flat-fan applications were visibly injured (15 to 40%); whereas, only plants less than 150 cm downwind from the RA-6 Raindrop applications and less than 90 cm downwind from the lawn spray-gun applications were injured (2 to 8%).
机译：现场测试表明，与XR8004平板风扇或RA-6广角空心圆锥形喷枪相比，带有4 gpm草坪尖端的草坪喷枪在90厘米至210厘米的顺风处降低了从喷涂带边缘向下沉积90％的施药量的百分比。风速在4.7至14.4 km / h之间。 XR8004扁平风扇应用在顺风210厘米处收集的应用体积百分比分别比RA-6雨滴喷嘴和草坪喷枪应用的体积高出5倍和16倍。应用中位于下风处的番茄植株的可见伤害，身高增加以及鲜重增加与所有喷嘴类型的喷雾漂移数据一致。随着与条带边缘的距离增加，三氯吡吡的伤害降低。距离XR8004平板风机应用最大210厘米处顺风的所有番茄植株都受到了明显的伤害（15％至40％）。然而，只有距RA-6 Raindrop应用程序不到风向150厘米的植物和从草坪喷枪应用程序朝风小于90厘米的植物受到伤害（2％至8％）。

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