The effect of some adjuvants on sprays produced by agricultural flat fan nozzles

Six commercially-available agricultural spray adjuvants were mixed with water and sprayed through a medium quality flat fan nozzle to evaluate their effect on the spray formation process and droplet size distributions. Droplet size and velocity distributions were significantly changed. Ethokem, which reduced droplet sizes and LI-700, which increased them, were selected for more detailed study with medium and fine quality flat fan nozzles. The adjuvants significantly affected the variation of droplet size within the spray and the thickness of the spray fan. Photographs showed that the mechanism of spray formation was changed by the addition of LI-700 and that droplets containing Ethokem had air inclusions. Copyright (C) 1996 Elsevier Science Ltd.