There is a large relationship between fruit cracking and the variety. In general, the thin peel is more easily cracked, and the seed watermelon is easier to crack than the seedless watermelon, and the round fruit shape is easier to crack than the oval shape watermelon. In addition, the most important reason is the drastic changes in water. Fruit cracking occurs in the so-called "ubiquinone" stage in which the melon quails begin to change color. At this time, the development of the melon hulls gradually becomes harder, while the development of the melon pods is still in an exuberant stage. Dehiscence occurs mostly at night or after rain (after irrigation). During the drought, the development of the melons slows down and the melons gradually harden. At this time, rain or a lot of watering causes the melons to rapidly develop and expand, while the melon skin enlargement is slow. Therefore, the melon skin is "swollen" and cracked. Improper use of swelling agents. The swelling agent should generally be sprayed on the melon embryo on the day of flowering of the female flower of watermelon or from 1 to 3 days before flowering, and should be applied according to the recommended dosage.
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