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A technology of pyrimethamine sulfonate and composition, applied in the directions of fungicides, biocides, biocides, etc., to achieve the effects of excellent control effect, easy degradation and good efficacy
Inactive Publication Date: 2012-02-15
HAILIR PESTICIDES & CHEM GRP
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Experiments have confirmed that the two have a strong synergistic effect, and there are no relevant reports at home and abroad on the research on compounding pyrithrimol with kasugamycin or polyoxin as active ingredients.
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example 1
[0044] (1) Experimental object:
[0045] Cucumber powdery mildewpathogen was isolated and purified from cucumber powdery mildew-infected leaves in Shandong Shouguang cucumber greenhouse, cultured and preserved on PDA slant in 4°C refrigerator.
[0046] Test medium:
[0047] PDA medium: potato 200g, glucose 20g, agar 20g, water 1000ml.
[0050] 70% kasugamycin technical, Jilin Province Yanbian Chunlei Bio-Pharmaceutical Co., Ltd., 95% pyrithrimol sulfonate technical, Qingdao Hailier R&D Center Synthesis Institute.
[0051] Mix and match settings:
[0052] The content percentages of 12% pyrimifene kasugamycin are 11.5:0.5, 11:1, 10.5:1.5, 10:2, 9.5:2.5, namely 11.5%+0.5%, 11%+1%, 10.5 %+1.5%, 10%+2%, 9.5%+2.5%, a total of 5 mixing combinations.
[0073] Cucumber downy mildewpathogen was isolated and purified from cucumber downy mildew diseased leaves in Shouguang cucumber shed, and cultured and preserved on PDA slopes in a refrigerator at 4°C.
[0074] We performed toxicity assays for single doses of pyrithrimol and polyoxamycin, EC 50 The values were 5.76 mg / l and 4.19 mg / l, respectively.
[0075] Mix and match settings:
[0076] The content percentages of 12% pyridilsulfonate·polyoxamycin are 11:1, 10:2, 9:3, 8:4, 7:5, namely 11%+1%, 10%+2%, 9% + 3%, 8% + 4%, 7% + 5% a total of 5 mixing combinations.
[0077] The test method is similar to that of biological assay example 1.
[0078] Experimental results and analysis:
[0079] Table 3 Toxicity test of polyoxin and pyrithrimol compound against cucumber downy mildew
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Abstract
The invention relates to a sterilization composition in the compounding field of farm chemicals, which is characterized in that: active ingredients of the sterilization composition are formed by mixing bupirimate and kasumin or polyxin, the weight percentage of the two active ingredients is 90:1 to 0.1:90, and the preferential weight percentage is (2 to 65):(50 to 0.1); total content by weight percent of the active ingredients in the sterilization composition is 0.1 percent to 90 percent, and the preferential content is 5 percent to 70 percent, rest ingredients of the sterilization composition are auxiliary ingredients which are allowed to be used and are acceptable in the farm chemical, and the sterilization composition can be made into wettable powder, suspending agent, water agent, emulsion oil, soluble liquid agent, water emulsion and water dispersion granule; and the sterilization composition is mainly used for plant diseases caused by bacteria of Erysiphe, Puccinia, rhynchosporium, Pyrenophora and Septoria.
Description
technical field [0001] The invention relates to the technical field of pesticide compounding, in particular to a bactericidal composition which uses pyrithrimol sulfonate and kasugamycin or polyoxin as active ingredients for binary compounding. Background technique [0002] Pyrimolsulfonate belongs to pyrimidine systemic fungicides and has protective and therapeutic effects. It can be quickly absorbed by plant roots, stems, and leaves, and circulates to various parts of the plant body, so it is resistant to rain erosion. It has the advantages of less dosage, high efficiency, low toxicity, and special effects on powdery mildew, so it replaces pyrimethol and pyrimol and other pesticides. Suitable for fruit trees, vegetables, flowers and other ornamental plants and field crops. Targets of prevention and control Various powdery mildews, such as apples, grapes, cucumbers, strawberries, roses, sweet raisin powdery mildew, have phytotoxicity to certain varieties of strawberries, ...
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