I don't know if the pepper growers have encountered this kind of disease: the top of the pepper fruit (the umbilicus) is water-soaked, the diseased part is dark green or dark gray, the flesh loses water and the top is sunken. So, what is this disease? The answer given by the agricultural technology teacher is: pepper umbilical rot. Now it is the high incidence of pepper umbilical rot, Hui Nongwang Xiaobian compiled the control method of pepper umbilical rot and everyone to talk about it.
Pepper umbilical rot occurs mainly in the vicinity of the umbilicus of the fruit. The skin of the affected pepper is black and gradually becomes a water-soaked lesion. The middle part of the lesion is leathery and flat, and gradually transforms into a dark brown depression. After dehydration, it shrinks into a sac. Some fruits begin to turn red at the border of disease and health, and mature in advance. When the disease occurs, the lesion is infested with bacteria by the bacteria, and the brown meat is rotted.
Causes:
Pepper umbilical rot is mainly caused by the flowering period of pepper, the soil is suddenly dry and wet, the temperature is high and low, and the water and temperature changes drastically, which leads to the decrease of the root activity of pepper and the inhibition of calcium absorption, which will cause calcium deficiency. Young fruit is the first to show calcium deficiency necrosis.
When the pepper is planted, the organic fertilizer is insufficient, and the nitrogen fertilizer and potassium fertilizer are applied excessively, especially the nitrogen fertilizer in the growth period, which inhibits the absorption of calcium, and the calcium absorbed from the soil in the late growth stage cannot meet the needs of fruit development, and may cause umbilical rot.
Prevention and treatment of pepper umbilical rot should be prevented by means of strengthening cultivation management.
1. When planting pepper seedlings; use microbial fertilizer as base fertilizer to ensure sufficient calcium in the roots. When topdressing should pay attention to the use of nitrogen, phosphorus, potassium fertilizer, do not apply nitrogen fertilizer.
2. During the flowering and peppering of pepper, it is a key period for absorbing calcium. According to the situation, calcium fertilizer can be compounded.
3. Reasonably regulate water, avoid over-drying, over-wetting, and timely drainage after rain. Watering should be chosen in the morning or in the morning, and watering should be avoided at noon in the dry and high temperature.
Note: In the case of umbilical rot, fertilizers containing trace elements such as calcium and sulfur and high-energy substances can be applied, so that the plants can be supplemented in time to avoid the occurrence of umbilical rot and deformed fruit.
The above is the prevention and treatment method of pepper umbilical rot that has been compiled by Huinong. I have learned it?
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