The appearance of twins in eggplant is a deformed fruit caused by a physiological disease.
Cause: The eggplant's fruit is developed by cell division and expansion, but the cell division ends before flowering. After flowering, the fruit mainly grows and grows due to cell swelling. At this time, a large amount of nutrients must be transported to the fruit cells to accumulate. In order for the fruit to grow normally, it must first be fertilized to form seeds. At this time, the concentration of auxin in the ovary increases, the fruit becomes a distribution center, and nutrients and moisture are absorbed to form a normal fruit. If the eggplant's flower bud differentiation period encounters low temperatures below 15°C, or if there is too much fertilizer and excessive irrigation, it will cause excessive nutrition at the growing point. When the nutrients meet the normal growth and development of eggplant, it may cause cell growth and overgrowth. The double ovary and many ovary form twin carpels, and sometimes even one stem grows more than three. Body eggplant, also known as "potato eggplant."
Prevention and control measures: 1. Strengthen management. In the fruiting period, it is necessary to control suitable environmental conditions, apply irrigation with reasonable irrigation, and prevent excessive growth of nutrients. When the eggplant grows to large eggs, applying 15 to 20 kilograms of urea per acre results in a reapplication of both nitrogen and potash. The results can be sprayed with 0.2% urea or 0.2-0.3% potassium dihydrogen phosphate in the later stage. 2. Pay attention to flowering temperature control. The general flower bud differentiation period is about 30°C during the day and the night temperature is 20-25°C. The flower buds are well differentiated. 3. The use of hormones to protect flowers should be strictly controlled. 4. When over-fertilization or "double eggplant" occurs, spray water-soluble liquid fertilizer can be sprayed 800-1000 times to alleviate the damage.
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