Commonly Used Pesticides - Fungicides (2)

Commonly Used Pesticides - Fungicides (2)

Alanine copper (tetraammine sulfate copper) 1. Function characteristics Pure product is dark blue liquid, which is a kind of high efficiency, low toxicity, low residue, broad-spectrum fungicide with strong absorbability, mainly based on protection. 2. Formulations 14%, 23%, 25% liquid agent. 3. Control object and use technology to control melon wilt disease with 23% liquid 250 to 300 times solution for rooting treatment; control of blight, epidemic disease, bacterial angular spot, available 14% water 250 to 300 times spray control . Every 7-10 days, once every 2 to 3 times. 4. Precautions 1 This product must not be mixed with acidic pesticides. 2 The use of the liquid needs to be shaken well, and the drug is started when a few diseased plants are found in the field. Anti-fukuning (anti-dry spirit, collateral ammonia, copper and zinc) The main active components of the anti-fuming compound are copper tetrasulfate, tetraammine zinc sulfate, or copper tetrasulfate, tetraammine zinc sulfate, and copper citrate. 1. The characteristics of the role of anti-Changning has a protective effect, there is a certain degree of permeability, poor effect of absorption therapy, apply to crops can add some trace elements, enhance disease resistance, and can directly act on pathogens, compared to melon wilt Good control effect. The appearance of this agent is a dark blue concentrated solution, which is stable under normal conditions and is easily precipitated under alkaline conditions. Low toxicity to mammals. 2. Formulation 25.9% liquid agent, 20% water agent. 3. Control object and use technology In the early stage of the wilt disease, use 250.times.600 dilutions of 25.9% water solution, 250 ml per root, or spray 750 kg of water per 1 ha of 1500 ml of water. According to the disease interval of 7 to 10 days, even spray 3 to 4 times; also available 20% water 400-600 times liquid, each root 250 ml, depending on the condition of the disease, every 7-10 days before pouring once, even with water 3-4 times. 4. Note 1 can not be mixed with acidic substances. 2 After spraying the agent, spray pesticides for several days. 3 Spraying should be suitable for morning, evening or cloudy days. Rain should be re-sprayed within 6 hours after spraying. 4 Stop spraying before 15 days of harvesting. Carbendazim (benzimidazole 44, cotton wilt) 1. Function characteristics Carbendazim is a broad-spectrum, low-toxicity, systemic fungicide with protective and therapeutic effects. Its mechanism of action is the formation of spindles in the mitosis of the interfering bacteria, thereby affecting cell division. The pure product is white crystal, soluble in dilute hydrochloric acid and acetic acid, and the corresponding salt is the anti-mildew treasure or lysozyme. Low toxicity to higher animals, low toxicity to fish and bees, and plant safety. 2. Formulations 10%, 25%, 50% wettable powder, 40% suspension. 3. The control object and the use technology are effective against many ascomycetes and deuteromycetes, and can prevent various diseases such as melon wilt, blight, anthracnose, powdery mildew, downy mildew, and leaf spot, and 50% wettable powder can be used. 600-800 times the liquid spray at the beginning of the disease, spraying every 7 to 10 days, a total of 2 or 3 times. Or use 0.1%-0.3% of seed weight for seed dressing, or 500 times for root irrigation, 250 ml for each plant, or soil disinfection for 6-8 grams per square meter of seedbed. 4. Precautions Carbendazim can be used in combination with various pesticides, but it cannot be mixed with alkaline substances and copper preparations. Procymidone (Siklin) 1. Function characteristics Promycorrol is a new type of systemic fungicide with protective and therapeutic effects. It has special effects on diseases caused by Botrytis and Sclerotinia, such as gray mold that occurs under high humidity and low temperature conditions. , Sclerotinia, and thiophanate-methyl, carbendazim-resistant pathogens have special effects. The pure product is a white crystal and it is low toxic to humans and animals. Under the experimental conditions, no "triple effect" was found on animals. 2. Formulation 50% wettable powder. 3. Control objects and use techniques for the control of diseases such as gray mold, sclerotia, and so on. Usually in the early stage of disease, 50% of Skoda WP can be sprayed with 495-750 g of water and 750 kg of water per hectare, sprayed once every 7-10 days, and sprayed 2 or 3 times. 4. Matters needing attention 1 can not be mixed with alkaline pesticides, and should not be mixed with organophosphorus pesticides. 2 When spraying under seedlings, weak seedlings, high temperature and high humidity conditions, pay attention to the application concentration to avoid the occurrence of phytotoxicity. 3 The use of the same agent for a long period of time can make the bacteria resistant to the disease. It is recommended that the fungicide be used in rotation with other fungicides. Pafluhydantoin (Iprodione) 1. Action characteristics Pafluhain is a new generation of high-efficiency, broad-spectrum, contact-killer fungicides with protective and therapeutic effects. It is mainly used to control Staphylococcus aureus, Candida, and Sclerotinia sclerotiorum. Diseases caused by Alternaria spp., in particular for the control of gray mold, sclerotinia, early blight. The original drug is white crystal, odorless, non-hygroscopic, slightly soluble in water, soluble in organic solvents, and under the normal storage conditions, the original drug and processing preparation are stable. Low toxicity to higher animals, no irritation to eyes and skin, less pollution to air, water and soil. 2. Formulation 50% wettable powder, 25% suspension. 3. The control object and the use of technology to prevent gray mold and early blight on melons are sprayed with 50% wettable powder at 1 000 to 1 500 times per hectare at the beginning of the disease, and sprayed once every 7 to 10 days. Can use soil irrigation, smoke fumigation and other methods for prevention and treatment. Or use 800 to 1 000 times watering root to prevent watermelon wilt. 4. Note that 1 China's provisions of the maximum use of the concentration can not be higher than 1 000 times the liquid, the maximum number of use can not exceed 3 times, the safety interval is 7 days. 2 When applying medicine, avoid contact with skin and eyes. Triadimefon (triadonine, tripolitin, and brilliant) 1. Action characteristics Triadimefon is a triazole bactericide with high efficiency, low toxicity, low residue, long duration, and strong absorbability. The mechanism of action is to inhibit the biosynthesis of the ergosterols of bacteria, and to interfere with the development of the appressorium of the cells and the suction device. It can prevent, eradicate, treat, and fumigate rust and powdery mildew. Pure products are colorless crystals, low toxicity to higher animals, no irritation to the skin and mucous membranes, low toxicity to fish, harmless to bees and silkworms, and safe to natural enemies and beneficial organisms. 2. Preparation 20% EC, 5%, 15%, 25% wettable powder, 15% aerosol. 3. The object of control and use of technology to control melon powdery mildew is diluted 4 000 to 6 000 times with 25% wettable powder and about 750 to 1 000 kg of diluted liquid is applied per hectare. Spraying is performed before or at the onset of disease. 7 to 10 days before spraying again, spray a total of 2 or 3 times. 4. Notes 1 Although triadimefon is a low-toxic germicide, it must be used in accordance with the safe use of pesticides. There is no antidote at present. 2 safety intervals 20 days. Flusilazole (Fuxing, Nova) 1. Function characteristics Fuxing is an efficient, low-toxicity, broad-spectrum, systemic triazole bactericide. It has special effects on diseases caused by cystomycetes, basidiomycetes and deuteromycetes. The mechanism of action is that when Fuxing sprays on the foliage of plants, it can be quickly absorbed by the foliage and transferred to the plants, inhibiting the biosynthesis of ergot isoalcohol, thus hindering the growth, development, and spore formation of mycelia. Disease prevention effect. The original drug is a colorless crystalline solid that is low in toxicity to higher animals, slightly irritating to skin and eyes, non-allergic, non-mutagenic and not harmful to beneficial insects. 2. Preparation 40% EC. 3. Prevention and control techniques and use of technology to prevent melon powdery mildew, can be used immediately after the discovery of diseases in the field, with Fuxing 8 000 ~ 10 000 times spray, after a few hours of drug penetration into the plant, the redistribution of the drug is strong, resistant Rain erosion, the general use of drugs 1 to 2 times that can control the spread of the disease, every 6 to 7 days before spraying again. 4. Note 1 promote the use of rotation with other fungicides to avoid drug resistance. 2 When applying drugs, strengthen safety protection. If eyes and skin are contaminated, rinse with clean water in time. Myclobutanil 1. Function characteristics Methiconazole triazole bactericide is sterol demethylation inhibitor, has a suction, protection and treatment, a wide spectrum of bactericidal. It has good control effect against powdery mildew, rust, scab, rot and so on. The original drug is a pale yellow solid, slightly soluble in water, soluble in most organic solvents, and insoluble in aliphatic hydrocarbons. Easy to degrade in sunlight. Low toxicity to higher animals and slight irritation to rabbit eyes. 2. Formulation 40% wettable powder, 12.5%, 25% EC. 3. Control object and use technology to control melon powdery mildew, spraying at the early stage of disease, using 12.5% ​​of myclobutanil EC 2 500~3000 times solution, spray once every 7-10 days, spray for 2 or 3 times To achieve the desired control effect. 4. Precautions 1 The agent is flammable and should be stored in a dry, dark and ventilated place. 2 If there is poisoning, immediately send it to the hospital for treatment. Agricultural Streptomycin (Streptomycin Sulfate) 1. Effect characteristics Agricultural streptomycin is an antibiotic secreted by Alternaria grisea. It has a therapeutic effect of internal absorption and has a good control effect on plant bacterial diseases. The pure product is a white bitter powder, hygroscopic, soluble in water, insoluble in most organic solvents, and stable at pH 3.7. For humans, 20% WP. 2. The object of prevention and control and the use of technology to control bacterial diseases of melons are sprayed with 200 units in the initial stage of disease.

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