Basic copper sulphate can be used to control cotton diseases
Copper noble 27.12% basic copper sulfate suspension can be used to control various diseases of cotton.
After sowing the cotton in the seedling stage, the soil is poured with 600.800% copper sulphate suspension with a high copper content of 27.12%, and the soil of the seedbed is disinfected, which can effectively prevent soil-borne diseases. When the cotton seedlings are out and the cotyledons are flattened, they are sprayed with copper high-grade 27.12% basic copper sulfate suspension agent 1000 times, which can effectively prevent seedling diseases such as cotton blight and anthracnose. 3 to 5 days before transplanting cotton seedlings, spraying with copper high 27.12% basic copper sulphate suspension 1000 times solution can ensure that the transplanted cotton seedlings are not infected and improve the survival rate of transplanting.
The field-use cotton blight is a systemic disease of the soil. When the temperature and humidity are suitable, the pathogen is susceptible to infection. After the cotton seedlings are susceptible to disease, they can be sprayed with a high-potassium 27.12% copper sulphate suspension 600-800 times in the early stage of the disease, and then used once every 7-10 days. Plants with severe disease can be rooted with copper high-grade 27.12% basic copper sulfate suspension 500 times solution. Cotton keratosis is mostly caused by bacterial infection after flooding. In the early stage of the disease, it is sprayed with copper high-grade 27.12% basic copper sulphate suspension 500 times, which can effectively control the spread of disease.
The drug has no systemicity, and does not inhibit the growth of cotton plants due to excessive use, and has strong adsorption and permeability, and the duration of effect is more than 20 days. Early medication is better. The drug has good compounding ability and can be mixed with non-strong acid and strong alkali fungicides and insecticides, but it can not be mixed with domestic potassium dihydrogen phosphate. If necessary, it can be mixed with Newcomb (high content foliar potash) And with nitrogen, phosphorus and trace elements) or high-quality foliar fertilizer and conditioner mixed.
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