1. Agricultural control: plant resistant varieties; intercropping with dwarf crops. Rotation: 3 to 5 year rotations with grass crops. Deep turning: The surface sclerotia is turned into deep soil to make it unable to germinate. Appropriate late sowing: According to different species, the sowing date is appropriate (about 10-15 days). Suitable for reducing planting density. Control nitrogen fertilizer. Strengthen field management: Sick and diseased discs, seeds, and other diseased bodies are removed from the field and buried deep or burned to reduce the source of bacteria. 2. Chemical treatment Seed treatment: Cortilionitrile seed coating agent coating, sclerotia net, and procymidone dressing. Field Spray: The effective agents for controlling rot of S. sclerotiorum are chlorpromazine, prochloraz, sclerotin, and prochloraz. Pan rot control is effective at the early flowering stage; when it is severe, it can be used twice at the early flowering stage and full flowering stage. In some regions where sunflower sclerotinia disease occurs in all growth stages, seed treatment + control measures for adult plant spraying may be adopted; alternatively, non-pollution agents such as oligosaccharides, which have high control efficacy against sunflower sclerotinia, may be used. Aminooligosaccharides and effective biological agents such as C. lucidum are used for prevention and treatment.
Polyvinyl alcohol is a kind of organic compounds, chemical formula for [C2H4O] n, the appearance is white flake solid flocculent or powder, odorless soluble in water (95 above), dimethyl sulfoxide, slightly soluble in benzene, toluene insoluble in gasoline kerosene, vegetable oil dichloroethane carbon tetrachloride acetone, ethyl acetate methanol glycol polyvinyl alcohol is an important chemical raw materials, such as used in the manufacture of polyvinyl acetal resistant to gasoline pipe and vinylon synthetic fabric treatment emulsifier paper coating adhesive glue, etc.
Polyvinyl Alcohol Pva,Low Binder Requirement Pva,Low Ash Content Pva,Smooth Burn-Out Profile Pva
Xingbang High Molecular Materials Co., Ltd. , https://www.chemicaladditive.com