Eggplant rotten fruit is a relatively serious type of disease on eggplant. It is mainly caused by partial rotting and fruit rot or fruit drop below the sepals of the fruit, causing the eggplant to lose its commercial value, causing serious economic losses, and it is difficult to control.
Main reasons for eggplant cracking:
The first is poor flower bud differentiation. In the eggplant production process, if the greenhouse temperature is low, it will lead to poor flower bud differentiation, especially at night, the temperature is low, easy to differentiate into multi-ventricular malformation flowers, malformed flowers developed into mostly malformed fruit, abnormal fruit often show the top Cracking phenomenon.
The second is improper use of hormones. The use of hormones in eggplants is mainly to improve the fruit setting ability. The best time to use them is to use it on the day of flowering. If it is too early, there will be stale fruit. If the hormone concentration is too large, it will cause cracking.
The third is uneven floods and floods. In the process of eggplant production, farmers in order to prevent the greenhouse humidity and grow bacteria, often control the water, the soil is too dry, the skin is obstructed, the pulp grows slowly, if suddenly water, the plant water supply is sufficient, the pulp growth rate is faster than the peel The speed of growth will cause cracks.
The fourth is a large temperature difference between day and night. In the eggplant production process, if the daytime temperature is high and the protection is not taken care of at night, resulting in low temperature, affected by thermal expansion and contraction, at night when the temperature is low, the eggplant peel shrinkage speed is faster than the speed of pulp shrinkage, resulting in peel can not synchronize the pulp flesh , there will be cracking.
Control methods:
1, eggplant optimum temperature is 15 ~ 30 °C, to avoid the greenhouse temperature is too high or too low, the rational use of hormones to avoid improper use of hormones cause eggplant cracking.
2. Reasonably water, avoid excessive drought, increase warm-keeping measures, avoid excessive temperature difference, and reduce fruit cracking.
3. Spraying boron calcium foliar fertilizer to enhance peel toughness and avoid cracking.
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