In recent years, raspberries imported from abroad have undergone severe root cancer in the process of planting. Recommended reading: http://?Client_ID=34603&Edition_ID=1&boardid=9658 Nursing pad is a disposable sanitary product made of PE film, non-woven fabric, fluff pulp, polymer and other materials. Medline Underpads,Covidien Underpads,Washable Underpads,Bed Underpads Incontinence Shandong Kangshun Daily Products Co., Ltd , https://www.centurybenifit.com
Root cancer mainly occurs in the root and neck, and sometimes also in the lateral roots and roots. The diseased part is initially milky white, smooth and soft, and then gradually turns brown to dark brown, hard texture, rough surface, uneven, small Only the cortex is slightly raised, large, such as eggs, irregular in shape. The development of the affected diseased plants was blocked, the leaves became small and yellow, the plants were short, the fruits became smaller, and the yield decreased. In the field survey, the incidence rate of strains was 5.6%-10.5%, and the incidence rate of severe strains was 34.4%. Generally, the yield was reduced by about 10%, and the heavier blocks reduced production by more than 30%.
The disease-causing bacteria are overwintering in the cortex of the diseased part and can also survive in the soil and survive in soil for 1-2 years. The bacteria invade through the wound. From incursion to canceration, it can be as short as several weeks and as long as more than one year. Pathogens can spread with the sick, but also with rain, watering spread. Seedling transfer is the way to spread the disease long distance. The disease easily occurs in alkaline lands.
To prevent and treat the disease, we must use robust seedlings and remove diseased seedlings. Second, we must strengthen fertilizer and water management. Raspberry is a shallow-rooted fruit tree, with roots distributed in 20-40 cm of topsoil. In particular, it is necessary to prevent soil water accumulation at the time of dry irrigation and rowing. Appropriate addition of ammonium sulfate, potassium sulfate and other acidic fertilizers to create an ecological environment that is not conducive to disease. Do not injure the roots when farming and fertilizing, and prevent and control underground pests in time. Thirdly, after the onset of disease, the diseased plants were completely extirpated and treated in a centralized manner. The soil near the diseased plants was disinfected with 10%-20% of agricultural streptomycin and 1% of Bordeaux. Fourth, chemical control. With 0.2% copper sulfate, 0.2% -0.5% agricultural streptomycin and other roots, once every 10-15 days, 2-3 times in a row. Immersion of seedlings with K84 suspension or rooting after onset of disease has a certain control effect
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