What is the disease of the roots of pepper seedlings? Recently, some readers sent an email to Zhengdao Fertilizer Network to say that the roots of the peppers in their homes are white, and ask what is the disease. Since the readers did not release photos, we have summarized several cases of whitening of pepper roots. the reason. In general, the whitening of the roots of peppers is likely to be chalk disease. This is a bacterial disease caused by high temperature and rain. It is mainly caused by the base of the stem. The base of the stem is dark brown, and white silky hyphae grow on it. The body expands radially, and the surrounding area is particularly obvious. Later, the brown cabbage seed sclerotia is produced on the hyphae of the diseased part.
At present, the prevention and control measures can be carried out by sun exposure sterilization, deep tillage of soil, application of fully decomposed organic fertilizer when fertilization, appropriate application of nitrogenous fertilizers such as ammonium sulfate, urea, calcium nitrate, etc., to increase the content of N in the soil to inhibit the nucleus of chalk disease. Germination. To adjust the pH of the soil, it is also possible to use the bio-pesticide Trichoderma to control chalk disease. The use of bio-pesticide is one of the ideal measures to produce pollution-free high-quality pepper.
Finally, introduce the pesticide control method for pepper white rickets. If pesticides are used to control capsicum sinensis, if it is used at the beginning of the disease, 20% methyl chlorpyrifos 800 times solution can be used to fill the roots or mixed with fine soil at a ratio of 1:50-100. Roots of the diseased part, or roots with 50% pentachloronitrobenzene 800 times solution.
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