Analysing the preference for pesticide spray to be deposited at leaf-tips

There appears to be a preference for pesticide sprayed onto plants deposited in larger quantities at leaf tips than other parts of plants. However, there is no clear experimental evidence explain this phenomenon. Based on previous studies, the possible mechanisms phenomenon include aerodynamics, microstructure surface and elasticity. Three experiments were carried out an attempt explore main factors. A high-speed camera was used record droplet tracks leaf-shaped artificial surfaces comparing them wheat maize. The deposition elastic coefficient different measured tilt angles. results showed that leaf-tip could strongly influenced by elasticity since with decreasing it increases rapidly when <5 N m?1 irrespective angle. This indicates distribution plant providing new variable influencing leaves better understanding process help improve modelling