The reader asked what was going on at the top of the navel of the eggplant fruit. How to prevent?
The expert Wang Zaiqiang replied: The large navel of eggplant fruit resulted in a decrease in the value of commodities, which affected sales and caused direct losses to farmers. The main navel of eggplant fruits was mainly physiological diseases.
One reason:
1. The temperature difference between day and night is small. When the night temperature is too high, the flower buds may be poorly differentiated, and the short column flowers or plants excessively consume the nutrients produced during the daytime photosynthesis, so that the flower buds do not receive sufficient nutrition, resulting in incomplete fertilization and pollination, which easily leads to the formation of a large navel.
2. Excessive use of nitrogen fertilizer. Excessive use of nitrogen fertilizers leads to prolonged growth of plants, leading to the loss of nutrients needed by the fruits. Because the fruit is less nutritious, it is easy to form a large navel.
3. The anther concentration is large. The concentration of anthers mainly depends on the temperature. The higher the temperature, the lower the concentration of the anthers; the lower the temperature, the higher the concentration. If the same kind of anther is used all the time, the concentration does not change, especially when the time of flowering is close to noon and the temperature is particularly high, the phytotoxicity is most likely to occur, resulting in abnormalities of the leaves and fruits, fruit cracking, or large navel.
4. Boron deficiency causes a large navel of eggplant fruit. Boron is directly involved in the differentiation of flower buds in eggplant. If boron deficiency occurs in plants, it will lead to poor flower bud differentiation, resulting in large navels and even cracking of fruits.
Second, control methods:
1. Decrease the night temperature, the daytime temperature is controlled at 28 ~ 30 °C, 15 °C above the night is appropriate.
2. Reduce the use of nitrogenous fertilizers Increase the application of phosphorus and potash fertilizers, and apply appropriate amounts of controlled-wang products to prevent and control plant growth.
3. According to the anther concentration at the temperature control point, reduce the large navel fruit that appears due to hormones.
4. Spray Jingbo Shelter or artificial shed or report agricultural vitality to reduce the occurrence of large navel fruit due to boron deficiency.
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