Farmers still have questions: If we spray from above, can we reach the underside of the leaves? Many pests or pathogens love to hide under leaves. Also, will the pesticides be blocked by crops with dense leaves and not be able to scatter downwards?


When the leaves of crops are thick, farmers are particularly worried that the pesticides cannot be sprayed on the back of the leaves. Researchers from the Agricultural Research Institute attached yellow test paper to the back of leaves to test the adhesion rate of pesticides. After spraying, small blue dots appeared on the test paper, indicating that the pesticide mist had indeed reached the back of the leaves.


"This is done by relying on the airflow disturbance caused by the drone." The drone has wind pressure, which drives the airflow when flying over, causing the blades to roll up and even the dead leaves on the ground to be swept up, so the medicine mist will be evenly spread. To give another example, the leaf roller, which is a major headache for rice farmers, will roll up the leaves and hide inside. It is difficult to spray it with traditional pesticides, but the micro-mist from drones can penetrate it.


Data From:

1. Agricultural Chemicals Research Institute, MOA

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