Reasons and Preventive Measures of Rotten Fruit in Pepper

The rotten pepper is a common symptom of various diseases, but the source of the disease is different, the symptoms are different, and the prevention and treatment methods are also different. The main causes of rotting and prevention measures are:

Sunburn disease: Sunburn is a physiological disease caused by strong light, which occurs mainly on the sunny side of the fruit. At the beginning of the disease, the sun was grayed out or light white leathery, the surface of the diseased area became thin, tissue necrosis became hard, later saprophytic bacteria infested, and the gray moldy layer grew to rot. The disease is mainly caused by localized heating of the fruits and burning of epidermal cells. In the shading of the leaves is not good, the lack of water in the soil or the dry and hot weather, excessive heat after the rain, easily lead to the disease. It should be watered in time to provide a balanced water supply and improve the microclimate in the field. In the pruning when appropriate to leave two leaves and then topping heart, this can play the role of shade cooling.

Umbilical rot disease: fruit umbilical damage, initially dark green water spots and rapid expansion, the disease Department shrinkage, late surface depression. It is often blackened or rotted due to parasitic pathogens. The reason is mainly due to the lack of supply of soil moisture. The supply of calcium from the spicy (sweet) pepper plants is unbalanced, resulting in calcium deficiency in the fruit. In addition, partial application of nitrogen fertilizer, will also affect the plant's absorption of calcium, resulting in calcium deficiency in the fruit produce umbilical rot. Can be sprayed with 1% calcium superphosphate solution or 0.1% calcium chloride solution. In addition, if the disease department becomes dark or rot, it can be combined with control of black mold or soft rot.

Soft rot disease rotten fruit: water stains were dark green spots, after the whole fruit soft rot, with bad odor, internal pulp rot, peel white, dry shrink after the fruit is generally hung on the branches, in case of external forces that fall off. Can spray 72% of agricultural streptomycin or 50% DT fungicide or 40% of streptomycin sulfate soluble powder, spray once every 7 days, and even spray 2 or 3 times.

Bacterial rotten fruit: Most of them were infected from the pedicle first, and were stained with grayish-green lesions. They quickly turned brown and soft rot. In wet weather, a sparse layer of white mold grows on the surface, and the diseased fruit does not shrink. Other parts of the stem, such as stalks, often water spots brown spots. Pay attention to strengthening prevention and control. Can be sprayed with 64% anti-virus and 55% Rhizoctonia mixed solution, or 58% metalaxyl manganese zinc or 69% ank manganese or 60% zinc manganese fluoride, spray once every 7 days, even spray 2 ~ 3 times.

Brucella and sclerotinia caused by rotten fruit: Botrytis cinerea, pepper, pepper on the incidence of more, on the top of the young fruit or pedicel brown water-spotted lesions, after the depression rot, dark brown, the surface appears Gray mold layer, less symptoms in other parts. Sclerotinia develops from the stalk to the whole fruit, showing watery rot, light grayish brown, and other parts have similar symptoms. Prevention: When the humidity is high, it can be quickly smoked and smoked. When the humidity is not high, it can be sprayed with sclerotinia sclerotiorum or 50% sulfamethoxazole and 70% thiophanate-methyl mixed liquid, once every 6 days, even spray. 2-3 times.

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