The relatively simple canopy structure of the open center shape citrus plants with a lower LAI obtained a
better droplet deposition, but the thin canopy lacked the leaves to resist the strong airflow of the UAV as the
leaves were buffeted by the wind.
There are also inevitable accidental errors occurring in the pruning process, and the different levels of pruning contribute to the large discrete degree of droplet deposition density and non-uniform distribution.
Perhaps some effective measures, such as more optimal operating parameters and
mechanical pruning, rather than human pruning, could reduce the unfavorable influence of these uncertain factors. Mechanical pruning easily gets the same size tree crown, which could minimize the artificial error.
It is also an effective method to reduce cost and labor intensity in the orchard management process