Impacts of surfactant-based adjuvants on spray droplet size, drift distance, and deposition efficiency

The application of anti-drift nozzles, such as air-induction nozzles, is the most common recommendation for reducing spray drift; To reduce the risk of coarse droplets bouncing and rolling produced by anti-drift nozzles, various types of adjuvants were screened by comparing their atomization performance, surface tension and contact angle, in order to identify favourable adjuvants that are compatible with anti-drift nozzles. It was found from the study results that the addition of 50% neem crude oil emulsifiable concentrate (neem oil), isomeric alcohol ethoxylates and BYK-405 all significantly decreased distribution span (5) and the percentage of droplet size less than 150 //m (^Vol