Eggplant split fruit and its prevention

First, the symptoms: the fruit from the bracts longitudinally split, lignified. The cleft palate with severe symptoms has a large crack and the flesh is exposed. Most of the split fruit is curved and grows on the side of the split to form a curved fruit. The light fruit of the cleft palate does not impair the commercial value. When the cleft reaches 1 cm or more, the commerciality is significantly lowered, and the fruit with severe cleft palate loses the commercial value. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

Second, the cause: the split fruit is generally caused by excessive use of growth regulators. Among the types of growth regulators, 2,4-D, which is more potent, is more susceptible to the formation of split fruit than the anti-fallin. The fruit cracking fruit is prone to occur when the concentration of the growth regulator is high or when it is repeatedly used. The occurrence of splitting fruit is related to the speed of hypertrophy. The fruit begins to elongate and hypertrophy from the ovary near the base of the sepal, and the apical elongation is slightly weaker. When the growth regulator is over-treated, the ovary near the base of the septum is sharply hypertrophied and cracking occurs. The fruit of normal pollination and fertilization is slow and slow to grow, and it is generally not easy to produce split fruit. The growth regulator treatment was carried out in the young bud stage a few days before flowering, and the cleft fruit was increased as compared with the treatment at the time of flowering or flowering. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

III. Occurrence conditions: When the concentration of the growth regulator is too high, the eggplant of various cultivation types is prone to splitting. However, because the cracked fruit is related to the speed of fruit hypertrophy, the growth of the plant is weaker than that of the growth and development. Generally, nitrogen is abundant, soil moisture is insufficient, and growth regulators are sprayed at noon and high temperature to promote the formation of split fruit. The high temperature and strong light directly shoot the young fruit, and the temperature of the flower buds rises too fast and too high, causing the flower bud to crack. After the flower buds are broken, the young parts of the fruit are exposed, which is vulnerable to pests and diseases and high temperature and strong light, resulting in cracking. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

Fourth, preventive measures: Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

1. Selection of growth regulators. It is advisable to use the anti-falling factor to protect the fruit from the growth regulator, and the cracked fruit is reduced, and the petals are easy to fall off. 2,4-D liquid is too concentrated, prone to cracking, should pay special attention when using. When the growth regulator is treated, it can be mixed with food coloring or sprayed with cotton, wool, etc. to avoid repeated treatment. Spraying is not carried out as much as possible at noon high temperature and young bud period. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

2, humidity. Generally, a large amount of water after drying causes a drastic change in soil moisture, which promotes the occurrence of cracked fruit. Therefore, it is necessary to maintain proper humidity in management. Linyi Fertilizer Network Copyright

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