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Effect of insecticide formulation and adjuvant combination on agricultural spray drift

机译：杀虫剂配方和佐剂组合对农业喷雾漂移的影响

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摘要

Loss of crop protection products when agricultural spray applications drift has economic and ecological consequences. Modification of the spray solution through tank additives and product formulation is an important drift reduction strategy that could mitigate these effects, but has been studied less than most other strategies. Therefore, an experimental field study was conducted to evaluate spray drift resulting from agricultural ground applications of an insecticide formulated as a suspension concentrate (SC) and as a wettable powder (WP), with and without two adjuvants. Droplet sizes were also measured in a wind tunnel to determine if indirect methods could be substituted for field experimentation to quantify spray drift from these technologies. Results suggest that spray drift was reduced by 37% when comparing the SC to the WP formulation. As much as 63% drift reduction was achieved by incorporating certain spray adjuvants, but this depended on the formulation/adjuvant combination. The wind tunnel data for droplet spectra showed strong agreement with field deposition trends, suggesting that droplet statistics could be used to estimate drift reduction of spray solutions. These findings can be used to develop a classification scheme for formulated products and tank additives based on their potential for reducing spray drift.
机译：当农业喷雾剂应用漂移时，作物保护产品的损失会带来经济和生态后果。通过储罐添加剂和产品配方对喷雾溶液进行改性是一种重要的减少漂移的策略，可以减轻这些影响，但是与大多数其他策略相比，对它的研究较少。因此，进行了一项实验性野外研究，以评估农药在农用地面应用时配成悬浮浓缩物（SC）和可湿性粉剂（WP）（有或没有两种佐剂）的喷雾漂移。还在风洞中测量了液滴的大小，以确定是否可以使用间接方法代替现场实验来量化这些技术的喷雾漂移。结果表明，与SC和WP制剂相比，喷雾漂移降低了37％。通过掺入某些喷雾助剂，可以减少多达63％的漂移，但这取决于配方/助剂的组合。液滴光谱的风洞数据与现场沉积趋势高度吻合，表明液滴统计数据可用于估算喷雾溶液的漂移减少量。这些发现可用于开发配方产品和罐式添加剂基于其减少喷雾漂移的潜力的分类方案。

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