There are many kinds of root diseases in fruit trees, including round spot root rot, root rot, white peony disease, white feather disease, and purple feather disease. In severe cases, it often causes root rot and even the death of the whole plant. Its comprehensive prevention and control measures are described below. Select disease-free seedlings and seedlings to disinfect the seedlings when they are in the nursery. Strictly inspect the seedlings and immediately destroy the diseased seedlings. Before planting, the roots of the seedlings were immersed in a 500-fold solution of 70% thiophanate-methyl for 10 to 30 minutes for root sterilization. The selection of disease-resistant anvil and disease-tree bridging is the use of seedlings with strong resistance to disease as the rootstock; the second is the decay of rhizomes caused by the disease of white peony, which can bridge new roots in the upper part of the damaged rhizome in early spring. When diseased trees treat abnormal symptoms such as withering on the upper part of the local area, and when the leaves have a small yellow color, digging should be checked in time and corresponding measures should be taken: If it is a disease of the white peony root, the lesions of the root stems should be completely scraped off with a 50-fold antibacterial agent. 402 or 1.9% of copper sulfate solution is used for wound disinfection and then applied with protective agent; if it is white feather disease, purple feather disease, root decay disease, moldy rot should be cut off, and scraped and excised root tissue should be taken out. Destroyed outside the park. Dig out the soil around the diseased soil, replace it with disease-free new soil, and infuse 250-300 times solution of sodium pentachlorophenolate or 500-1000 times solution of 70% thiophanate-methyl solution, or apply 1:50-100 The 70% pentachloronitrobenzene herbicide can also be applied herbaceous ash. Disease tree treatment and application period should avoid the high temperature and rainy season in summer. After treatment, add decomposed human excreta or urea to restore the tree vigor as soon as possible. Pickled Beefsteak,Frozen Pickled Beefsteak,Seasoned Pickled Beef Cubes,Fillet Steak ZHOUSHAN GENHO FOOD CO.,LTD , https://www.genho-food.com