Harvesting fruit with shaker (mechanized harvesting of pistachios)

Fruit harvesting in the first stage depends on Iranian Pistachio the frequency of vibration and oscillation, the effect of which is shown in the following diagram: Mechanical harvesting is defined as falling fruits before harvesting in addition to fruit harvesting by the shaker from the tree. Harvesting takes place in early September, when the FDF / W ratio was 6.8 N / g.

Oscillation and shaker frequency are important variables for the percentage of fruit harvest, but the percentage of fruit harvest to the fluctuation of the experimental branch in the orchard showed that the highest fruit harvest (100%) was achieved at a fluctuation of 60 mm and a frequency of 20 Hz. Fruit harvest was in the range of 60 mm and frequency 15 Hz was 95.2%; But better results were achieved at 50 mm oscillation and 20 Hz frequency.

At this frequency and oscillation, the fruit harvest was 95.5%. The shaker caused the frame to vibrate a lot when operating at high oscillations; Low oscillation can therefore be preferred for mechanical harvesting; Unharvested pistachios with an amplitude of 50 mm and a frequency of 20 Hz were observed to be both immature and without keels.