Woods N, Craig I P, Dorr G, Young B
Centre for Pesticide Application and Safety, Univ of Queensland, Gatton, Australia.
J Environ Qual. 2001 May-Jun;30(3):697-701. doi: 10.2134/jeq2001.303697x.
This paper presents results from field studies carried out during the 1993-1998 Australian cotton (Gossypium hirsutum L.) seasons to monitor off-target droplet movement of endosulfan (6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepin 3-oxide) insecticide applied to a commercial cotton crop. Averaged over a wide range of conditions, off-target deposition 500 m downwind of the field boundary was approximately 2% of the field-applied rate with oil-based applications and 1% with water-based applications. Mean airborne drift values recorded 100 m downwind of a single flight line were a third as much with water-based application compared with oil-based application. Calculations using a Gaussian diffusion model and the U.S. Spray Drift Task Force AgDRIFT model produced downwind drift profiles that compared favorably with experimental data. Both models and data indicate that by adopting large droplet placement (LDP) application methods and incorporating crop buffer distances, spray drift can be effectively managed.
本文介绍了在1993 - 1998年澳大利亚棉花（陆地棉）种植季节进行的田间研究结果，以监测用于商业棉花作物的硫丹（6,7,8,9,10,10 - 六氯 - 1,5,5a,6,9,9a - 六氢 - 6,9 - 亚甲基 - 2,4,3 - 苯并二氧硫杂环庚烷3 - 氧化物）杀虫剂的非靶标雾滴移动情况。在广泛的条件下进行平均，在田间边界顺风500米处的非靶标沉积量，油基施用时约为田间施用量的2%，水基施用时为1%。在单个飞行线顺风100米处记录的平均空中漂移值，水基施用时是油基施用时的三分之一。使用高斯扩散模型和美国喷雾漂移任务组的AgDRIFT模型进行的计算得出的顺风漂移剖面与实验数据相比表现良好。模型和数据均表明，通过采用大液滴放置（LDP）施用方法并纳入作物缓冲距离，可以有效地管理喷雾漂移。
