Diagnosis and Treatment of Edible Cactus Stalk Rot

Symptoms: Stalk rot is a fungal disease. It is a common disease of cactus. Diseases often occur at the base of the stem and can spread gradually upwards and can also occur at the upper stem section. At the early stage of disease, the lesion tissue will produce water-stained dark gray (or brownish) lesions and gradually soften. In the later stage, the tissue of the stem tissue will rot and dehydrate. The remaining layer of skin will shrink and shrink, or only the residual tissue will rot after rot. A pith eventually led to the death of the whole plant. The disease has the characteristics of rapid onset, rapid spread and great harm. Failure to take effective prevention and control measures in time will result in reduced production, reduced income, and even severe consequences.
Control methods: Sterilization and sterilization are the key measures for preventing and controlling cactus fungal stalk rot. The following prevention and control methods can be used: 1 Soil disinfection. Sterile soil is used as cultivated soil of edible cactus and reasonable fertilization. Fully decomposed manure fertilizer is used as base fertilizer to maintain ventilated and ventilated greenhouses, which can effectively prevent and greatly reduce the incidence of stalk rot. The soil contaminated by bacteria should be used as a cultivation soil after being sterilized. When the soil is disinfected, 50% carbendazim wettable powder can be mixed with dry fine soil in a ratio of 1:1000 (mixed and mixed to form a pharmacy soil). When planting, pharmacy soil will be scattered into the hole. About 10 kg; can also be used 2% -3% of formalin (formaldehyde) water irrigation soil, 18 kg of liquid per square meter, covered with plastic film 2 days and nights to remove the film, until the taste is completely volatilized before planting . 2 chemical control. After the edible cactus is planted, the plants should be sprayed with 50% carbendazim 500 times solution, or 0.5% Bordeaux mixture, or 70% dexamethasone 800 times solution - 1000 times solution, or 70% thiophanate-methyl 800 times solution ( The above-mentioned agent may be any one of them.) Spraying the plants evenly in the morning or evening can have a good effect of disinfecting and preventing diseases.

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