Thiram is an organic sulfur broad-spectrum protective bactericide. Its bactericidal mechanism is to inhibit the activity of some enzymes and interfere with the metabolic cycle of tricarboxylic acid, resulting in the death of bacteria. The drug has certain permeability and has a long duration in soil. It has a certain repellent effect on voles and rabbits at high dose.
Use technology:The medication methods of Thiram vary with different prevention and treatment purposes. Besides conventional spraying, it can also be used for irrigation, soil disinfection, seed dressing and branch drying. It is used to produce compound bactericide. Applicable crops and control objects: Thiram has a very wide range of application, and has a good control effect on many kinds of fungal diseases on many kinds of plants.
Used as seed treatment, soil treatment or spray. Seed dressing at the dosage of 0.125% (active ingredient) to prevent and control wilt and Damping off of cabbage, lettuce, melons, eggplant and broad bean at seedling stage; Seed dressing at the dosage of 0.15 ~ 0.25% (active ingredient) to control rice seedling blight, rice black fishy disease and pine seedling blight; Seed dressing with 0.4% dose (active ingredient) to prevent and control the Verticillium Wilt of peas. 3750 ~ 5625 g of active ingredients per hectare were used to treat soil (ditch or hole application) to prevent and control seedling diseases of vegetables, tobacco and sugar beet. 50% thiram wettable powder of 500~800 is used to control strawberry and other gray mold, pear scab, potato tomato late blight, melon, vegetable downy mildew, grape anthracnose and white rot. A variety of compound preparations have been produced, such as weixiuling, thiophanate, sanfumei (40% thiram, 20% ziram, 20% urbacide), (1.2% thiram, 0.6% trimethylamine, 0.6% ziram), etc. Compound seed dressing has been commercialized in China and is a good seed dressing instead of mercury preparation. 40% seed dressing dual wettable powder contains 20% thiram and 20% seed dressing. The seed dressing is an endosorbent fungicide. Properties: the pure product is white powder, melting point 222 ~ 224 ℃, decomposition temperature 270 ~ 285 ℃. Insoluble in water, low solubility in general organic solvents, easily soluble in dimethylformamide. It forms salt with acid and is more stable to alkali. Seed dressing with 40 ~ 80 g of double effective components per 100 kg seed to control wheat smut; Seed dressing with 120 ~ 200g effective components to control sorghum smut; Seed dressing with 200 g active ingredient to control cotton seedling diseases, seed dressing with 2500 mg / L drug solution to control kenaf anthracnose.
Post time: Nov-18-2021