Jasmine planting: how to prevent and cure the white silk disease of jasmine?

How to prevent and cure the white silk disease of jasmine? What caused the white silk disease of jasmine? Please introduce that white silk disease of jasmine is the most serious disease of jasmine. When the disease is serious, the plant will die and the yield will be affected. The white silk disease of jasmine occurs in the root neck and root, and can spread to the lower leaves under suitable conditions. The part of the root neck became brown and rotten, gradually spread and spread, producing a white silk-like film, mostly radiating, and the edge was especially obvious. the silk-like hyphae could spread to the soil near the root neck, and in severe cases, the whole soil was full of white hyphae. Later, the sclerotia was formed on the mycelium film, and the sclerotia was white at first, and gradually deepened into yellow, tea brown to dark brown, rapeseed-like size. After cortical decay, the leaves withered and fell off, and the whole plant died in severe cases. The pathogen of jasmine white silk disease is mainly spread by hyphae in the soil, and its long-distance transmission depends on running water or diseased seedlings, diseased soil and diseased basin. When changing pot soil, it is easy to get sick when using garbage soil and vegetable garden soil, continuous cropping or continuous use of diseased basin soil is serious, and high humidity is easy to occur. The prevention and control of jasmine white silk disease can be carried out with reference to the following methods: horticultural control: rotation, centralized treatment of diseased basin soil, it is better to pour it into the paddy field, the basin soil is taken from the disease-free land, and the paddy soil is better. Organic manure should be fully mature, breeding materials should be cut from disease-free plants, and dense stacking should be avoided when the greenhouse is overwintering. Removal of diseased plants and soil disinfection: if the injured plants are found in the early stage, they should be pulled out in time and burned or buried deeply, and the disease points should be irrigated with 86.2% copper master 1200-fold solution or 50% Dysenamine 500 times solution or sprinkled with lime powder. The removal of diseased plants should be carried out before sclerotia formation. Chemical control: 50% methamphetamine 1 kg per mu; irrigate 1000 times of Dysenamine at the initial stage of the disease, and control again once every 7-10 days, in order to kill the germs in the soil. After the disease, 1000 times of thiophanate methyl or 1000 times of carbendazim was used to spray the soil around the stem base of the plant to restrain the spread of the disease. Pour other fungicides later; the basin soil can be prepared with Trichoderma bran, re-mixed into the soil according to 0.5% of the soil, and used after loading the basin; or a part of the basin soil can be dug out and loaded into the soil mixed with the preparation. Physical control: the basin soil is sterilized by heating method. Biological control: using the antibiotic Trichoderma harzianum to control jasmine white silk disease has a good effect. First cultivate the strain of Trichoderma, and then mix it into the sterilized wheat bran to form Trichoderma preparation. When Trichoderma preparation is used, and then evenly mixed with fine soil to the soil, the soil should maintain a certain humidity, promote a large number of Trichoderma growth and reproduction in the soil, in order to inhibit the growth of white silk fungus, so as to achieve the purpose of disease prevention. Rational fertilization: the application of non-mature organic fertilizer on the surface of the soil will aggravate the occurrence of white silk disease, so organic fertilizer (such as barnyard manure, etc.) should be used as base fertilizer and buried deep in the lower layer of the soil. If used as topdressing, it must be fully ripened before it can be applied. Click to get more jasmine planting techniques click to get more flower planting techniques