2022 Volume 84 Issue 5 Pages 321-331
To monitor young leaves, which are an important diagnostic factor of growth in strawberries, a method that exposes the growth point was investigated by applying airflow from above. The results of wind tunnel experiments showed that 18 out of 19 growth points could be exposed at an air velocity of 6 m/s, and the frequency of exposure per unit time was calculated to be 89％. Additionally, the position of the airflow was studied assuming that the movement of the quadcopter follows the staggered rows of crops. By flying directly above the crop row, it was possible to optimally expose the growing point 76％ of the time while moving 400 mm in front of and behind the plant.
