The occurrence and control of mulberry rough skin disease

Mulberry rough skin disease is a kind of physiological disease, and it is also one of the main diseases of Mulberry Garden. The timely identification and prevention of mulberry rough skin disease is extremely important for improving the yield and quality of mulberry leaves. First, the cause of the disease Mulberry rough skin disease is caused by the lack of boron in the mulberry soil. Boron deficiency in soil will affect the photosynthesis of mulberry trees, impede the conversion and transportation of carbohydrates, and weaken or hinder the normal physiological activities of mulberry trees. The average incidence of mulberry fields with poor soil fertility is high, and coarse branches of mulberry trees are more susceptible to morbidity than mulberry branches. Large and medium-sized seedlings in nurseries are more susceptible to disease than small seedlings. Second, the symptoms of mulberry mulberry skin in the early autumn high temperature and dry period began to show symptoms. At the early stage of disease, the base of the branches is soft and lacks elasticity, the branches are slightly dry, the pores are enlarged, and the leaves of Akiba are hardened and shedding, and the leaves are curled. In severe cases, there is a fine crack in the epidermis, the fungus is parasitic, and the sap is colorless. In the spring of the following year, the severed diseased branches did not germinate, or the leaves of the diseased leaves became cat-shaped after germination. After the leaves grew, the yellow leaves fell off and the branches gradually withered; the germinating rate was low in the developing countries. Third, the prevention and control methods (1) Use 1 kg of boron per acre mixed organic fertilizer as base fertilizer. (2) When mulberry seedlings with rough skin disease are found, they must be soaked in 2%-3% borax liquid and then planted. (3) For mulberry trees with rough skin disease, use 5% borax liquid to dry, apply once every 7-10 days, dry for 3 months, and the recovery rate is 100%; 3% borax is used for the diseased mulberry field. The liquid is applied once every 7-10 days, and dried for 3 months, all of which can be rehabilitated; the undamaged mulberry field is sprayed with 0.5% borax liquid, sprayed once every 7-10 days, and sprayed for 3 months. Recurrence.

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