Commonly used pesticides - fungicides

Copper amide (tetraammine copper sulfate)
1. The pure red liquid is a kind of high-efficiency, low-toxic, low-residue, broad-spectrum fungicide with strong systemic absorption.
2. Formulation 14%, 23%, 25% aqueous solution.
3. Control object and use technology to control melon wilt disease with 23% water agent 250 ~ 300 times liquid for root treatment; control of blight, blight, bacterial angular spot disease, can be sprayed with 14% water agent 250 ~ 300 times liquid spray . Once every 7-10 days, use 2 to 3 times.
4. Note 1 This product should not be mixed with acidic pesticides. 2 Use the drug solution to shake well, and start to use it when a few strains are found in the field.

Anti-drying (anti-dry spirit, copper ammonia, zinc)
The main active ingredients of anti-drying are tetraammonium sulfate, tetraammonium sulfate, or tetraammonium sulfate, tetraammonium sulfate, and copper citrate.
1. The function is anti-drying protection, has a certain permeability, and the effect of systemic treatment is not good. It can be supplemented with some trace elements to enhance the disease resistance, and can directly act on the pathogen, and has more effect on melon wilt. Good control effect. The appearance of the agent is a dark blue concentrated solution, which is generally stable and precipitates easily under alkaline conditions. Low toxicity to mammals.
2. Formulation 25.9% aqueous solution, 20% aqueous solution.
3. Control objects and techniques of use In the early stage of blight, use 500.6% of the dilution of 25.9% water, 250 ml per plant, or 750 kg of water with 1,500 kg of water and 25.5% of water per hectare. Depending on the condition, the interval is 7 to 10 days, and even sprayed 3 to 4 times; 200% water solution 400-600 times solution can be used, 250 ml per plant root, depending on the development of the disease, re-watering once every 7-10 days, even pouring 3-4 times.
4. Note 1 cannot be mixed with acidic substances. 2 After spraying the agent, it should be separated by several days before spraying other pesticides. 3 Spraying should be early, late or cloudy, and it should be re-sprayed within 6 hours after spraying. 4 Stop spraying 15 days before harvest.

Carbendazim (benzimidazole No. 44, cotton atrophy)
1. Function characteristics Carbendazim is a broad-spectrum, low-toxic, systemic fungicide with protective and therapeutic effects. Its mechanism of action is to interfere with the formation of spindles in mitosis, thereby affecting cell division. The pure product is white crystal, soluble in dilute hydrochloric acid and acetic acid, and forms the corresponding salt, which is anti-mildew or lysozyme. It is low-toxic to higher animals, has low toxicity to fish and bees, and is safe for plants.
2. Formulation 10%, 25%, 50% wettable powder, 40% suspension.
3. The control object and the use technology are effective for many ascomycetes and deuteromycetes, and can prevent and cure various diseases such as melon wilt, blight, anthracnose, powdery mildew, downy mildew, leaf spot, etc., 50% wettable powder can be used. 600 to 800 times of liquid is sprayed at the beginning of the disease, sprayed once every 7 to 10 days, and sprayed a total of 2 to 3 times. Or seed dressing with 0.1%-0.3% of the weight of the seed, or rooting with 500 times, 250 ml per plant, or 6-8 grams of soil per square meter of seedbed.
4. Precautions Carbendazim can be mixed with a variety of pesticides, but can not be mixed with alkaline substances and copper preparations.

Procymidone
1. Function: Pythium 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 in high humidity and low temperature. , Sclerotinia sclerotiorum and pathogenic bacteria resistant to thiophanate-methyl and carbendazim have special effects. The pure product is white crystal, which is low in toxicity to humans and animals. Under the test conditions, there is no "three-way" effect on the animals.
2. Formulation 50% wettable powder.
3. Control objects and use techniques are used to control diseases such as gray mold and sclerotinia. Generally, in the early stage of the disease, 50% of the keeling WP 495-750 g of water and 750 kg of water are sprayed per hectare, sprayed once every 7 to 10 days, and sprayed a total of 2 to 3 times.
4. Note 1 can not be mixed with alkaline pesticides, and should not be mixed with organophosphorus pesticides. 2 Spraying under seedlings, weak seedlings, high temperature and high humidity conditions, pay attention to the application concentration to avoid the occurrence of phytotoxicity. 3 long-term use of the same agent is easy to make the bacteria resistant, it is recommended to rotate with other fungicides.

Couine (isourea)
1. Characteristics of the action The acetonide is a new generation of high-efficiency, broad-spectrum, contact-killing fungicide with protective and therapeutic effects. It is mainly used to control diseases caused by Botrytis, Candida, Sclerotinia, Alternaria. In particular, it is a special medicine for controlling gray mold, sclerotinia, and early blight. The original drug is white crystal, tasteless, non-hygroscopic, slightly soluble in water, soluble in organic solvents, and under normal storage conditions, the original drug and processed preparation are stable. It is low-toxic to higher animals, has no irritating effect on eyes and skin, and has less pollution to air, water and soil.
2. Formulation 50% wettable powder, 25% suspension.
3. The control object and the use of technology to control the gray mold and early blight of melons are sprayed with 50% wettable powder of 1 000 to 1,500 times per hectare at the beginning of the disease, and sprayed once every 7 to 10 days. Soil watering, smoke fumigation and other methods can be used for prevention and treatment. Or use 800 to 1 000 times of liquid to control the watermelon wilt.
4. Note that the maximum use concentration in China is not higher than 1 000 times, the maximum number of uses should not exceed 3, and the safety interval is 7 days. 2 Avoid contact with skin and eyes when applying.

Triadimefon (Pulverized Rust, Pink Rust, Bailipong)
1. Function characteristics Triazolone is a triazole fungicide with high efficiency, low toxicity, low residue, long-lasting effect and strong systemic absorption. Its mechanism of action is to inhibit the biosynthesis of ergosterol, which interferes with the development of adherent cells and haustors. It has the functions of prevention, eradication, treatment and fumigation for rust and powdery mildew. Pure product is colorless crystal, low toxicity to higher animals, non-irritating to skin and mucous membrane, low toxicity to fish, harmless to bees and silkworms, safe to natural enemies and beneficial organisms.
2. Formulation 20% emulsifiable concentrate, 5%, 15%, 25% wettable powder, 15% aerosol.
3. Control objects and techniques to prevent melon powdery mildew, use 25% wettable powder, dilute 4 000 to 6 000 times, use about 750 ~ 1 000 kg of diluted liquid per hectare, spray before the disease occurs or in the initial stage. Spray again every 7 to 10 days, a total of 2 to 3 times.
4. Precautions 1 Although triazolone is a low-toxic fungicide, it should also be used in accordance with the safe use of pesticides. There is currently no antidote. 2 The security interval is 20 days.
Fluorosilazole (Fuxing, Xinxing)
1. Function characteristics Fuxing is a high-efficiency, low-toxic, broad-spectrum, systemic triazole fungicide. It has special effects on the diseases caused by cystic bacteria, basidiomycetes and deuteromycetes. Its mechanism of action is when Fuxing After being sprayed on the foliage of plants, it can be quickly absorbed by the foliage and transmitted to plants to inhibit the biosynthesis of ergot alcohol, thus inhibiting the growth, development and sporulation of hyphae, and achieving the effect of disease prevention. The original drug is a colorless crystalline solid, low toxicity to higher animals, mildly irritating to skin and eyes, non-allergenic, non-mutagenic, and not harmful to beneficial insects.
2. Formulation 40% emulsifiable concentrate.
3. Prevention and treatment of objects and techniques to prevent melon powdery mildew. When the disease is first discovered in the field, it can be sprayed with Fuxing 8 000 to 10 000 times. After a few hours, the drug will penetrate into the plant. The redistribution of the drug is strong. Rain water wash, generally after 1 or 2 times of medication can control the expansion of the disease, spray again every 6 to 7 days.
4. Note 1 It is recommended to rotate with other fungicides to avoid resistance. 2 When applying medicine, strengthen safety protection, such as eyes and skin are contaminated, should be rinsed with water in time.

Myclobutanil Function characteristics Myclobutanil is a triazole fungicide. It is a demethylation inhibitor of sterol. It has systemic, protective and therapeutic effects and a broad spectrum of sterilization. It has good control effects on powdery mildew, rust, black star disease and rot disease. The original drug is a pale yellow solid, slightly soluble in water, soluble in most organic solvents, and insoluble in aliphatic hydrocarbons. It is easily degraded under sunlight. Low toxicity to higher animals and slight irritation to rabbit eyes.
2. Formulation 40% wettable powder, 12.5%, 25% emulsifiable concentrate.
3. Control objects and techniques to prevent melon powdery mildew, spray at the beginning of the disease, use 2,500-3000 times of 12.5% ​​nitrile emulsifiable concentrate, spray again every 7 to 10 days, a total of 2 to 3 times Achieve the desired control effect.
4. Cautions 1 This agent is flammable and should be stored in a dry, dark and ventilated place. 2 If there is poisoning, immediately send it to hospital for treatment.

Agricultural streptomycin (streptomycin sulfate)
1. Function characteristics Streptomycin in agriculture is an antibiotic secreted by Rhizoctonia solani, which has a systemic therapeutic effect and has a good control effect on plant bacterial diseases. Pure product is a white bitter powder, hygroscopic, soluble in water, insoluble in most organic solvents, stable at pH 3.7. For humans, 20% wettable powder.
2. The control object and the use technology are used to control the bacterial diseases of melons, and 200 units of spray are used in the early stage of the disease.
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