Symptoms: abnormal enlargement of the middle or top of the zucchini fruit
Etiology: Although it has been pollinated, the fruit is incompletely fertilized, and seeds are only formed at the apex. Since auxin is produced during seed development, more nutrients are transported to this place, so the apex pulp tissue is preferentially developed, and it is particularly hypertrophic. Form big guagua. Insufficient nutrients, uneven water supply, and weakened plant growth can easily cause the formation of large-diarrhea melons. In the case of potassium deficiency, it is easier to form big guaguars.
Control methods: Ensure adequate supply of water and fertilizer, and to be uniform, in particular to ensure the supply of potash, so as to maintain the vigorous growth of plants. The operation of artificial pollination should be fine, thorough, and adequate, so that the pollen is evenly scattered on the stigma of the female flower.
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