The practice involves manually transferring pollen from the male flower of a zucchini plant to the female flower. This action is necessary when natural pollination, typically carried out by insects, is insufficient or absent, leading to poor fruit development.
Successful fruit production is contingent upon effective pollination. When natural methods are unreliable due to weather conditions or limited pollinator activity, manual intervention ensures a higher yield and minimizes the risk of blossom drop, a common issue that results in the loss of developing zucchini fruits.