Pesticide field spray is an important technical measure for the prevention and control of diseases, pests and weeds in China. Every year, hundreds of millions of tons of liquid medicine are sprayed into farmland. Due to insufficient research on the principle of pesticide application technology in China, single plant protection machinery, and backward pesticide application technology, most regions still use heavy fog drops and high-capacity spray to spray pesticides. It is a habit to see drops of pesticide from crop leaves. This method of heavy fog droplets and large capacity results in low effective utilization of pesticides, severe loss of liquid medicine, not only wasting a large amount of pesticides, but also seriously polluting the environment.

This article elaborates on the impact of contact angle measuring instruments and surface tension meters on the efficacy of pesticide formulations in the industry.