Pyrazole ether ester CAS 175013-18-0 , chemical name N – [2- [[1- (4-chlorophenyl) pyrazole 3-yl] oxymethyl] phenyl] – N-methoxycarbamate methyl ester, chemical formula C19H18ClN3O4. Pyrazolamide is a methoxyacrylate based fungicide that inhibits mitochondrial respiration and ultimately leads to cell death. It has protective, therapeutic, and leaf osmotic conductivity effects.

Mainly used to prevent various diseases caused by fungi on crops, pyrazolin has good control effects on wheat powdery mildew and scab. In addition to having direct effects on pathogenic bacteria, pyrazolin can also induce physiological phenomena in many crops, especially grains, such as increasing nitrogen absorption, promoting rapid crop growth, increasing crop yield, and achieving high crop yield.

The period from sowing in autumn to overwintering is a critical period for the infection of wheat stem rot pathogens. Seed coating or seed dressing treatment is the key to effective prevention of disease. In the current lack of registered pesticides, combined with the prevention of other wheat diseases, seed treatment suspension agents such as pyrazolin can be used to coat or mix wheat seeds to prevent the occurrence of wheat stem rot.

Chinese name: pyrazolin

Foreign name: pyrostrobin

Nickname: imidazole ether

Chemical formula: C19H18ClN3O4

Molecular weight: 387.817

CAS login number: 175013-18-0

EINECS login number: 605-747-1

Melting point: 63.7 to 65.2 ℃

Boiling point: 501.1 ℃

Density: 1.27 g/cm ³

Appearance: White to light beige odorless crystals

Flash point: 256.8 ℃

Application area

Pyrazolin is a new broad-spectrum fungicide.

1. To prevent and control grape powdery mildew, downy mildew, black rot, brown blight, branch blight, etc., 100 g/hm2 can be applied 5-7 times with an interval of 12-14 days.

2. To prevent and control loquat corner spot, 25% emulsifiable concentrate can be spray with 1000-3000 times liquid, once every 10-15 days, and 2-3 times continuously.

3. To prevent and control citrus scab, resin disease, black rot, etc., 50 g/hm2 can be applied 2-3 times with an interval of 34-58 days, which has a good control effect. If used interchangeably with other chemicals, it can also improve the quality of citrus.

4. To control lawn brown spot, tea tree anthracnose and Du fruit tree anthracnose, 25% emulsifiable concentrates 125-250 mg/kg can be used for spray. To prevent and control lawn diseases such as bacterial wilt, epidemic disease, white silk disease, snow rot, etc., 250-560 g/hm2 can be applied 3-5 times with an interval of 14 days.

5. To prevent and cure diseases such as hybrid orchid, phalaenopsis, pineapple, root rot of carnation, hybrid orchid, phalaenopsis, anthracnose and leaf spot of crabapple, chlorophytum comosum, pineapple, rust of rose and carnation, and wilt of rose, lily, tulip, carnation, etc., the use concentration is 1500-3000 times, that is, 10-20ml 25% Kairun emulsifiable concentrate is added to each backpack of manual spray water, and spray is fine and even.

6. Grape black spot, powdery mildew, and anthracnose are most likely to spread under high temperature and humidity climatic conditions. A combination of prevention and treatment should be adopted, that is, spraying once before the onset of the disease, with an interval of 7-10 days depending on the development of the disease. Spraying 2-3 times according to climatic conditions can effectively prevent the occurrence of various grape diseases. The use concentration is 1500-3000 times, that is, 10-20ml of 25% Kairun emulsifiable concentrate is added to each bag of manual spray water, and the spray is fine and uniform.

7. To prevent and cure various lawn diseases such as rot mold, blight, summer spot, coin spot, sickle wilt, powdery mildew, the use concentration is 1500-3000 times, that is, 10-20ml 25% Kairun emulsifiable concentrates are added to each backpack of manual spray water.

8. It has an impact on silkworms and should be strictly prevented from drifting when used in areas with nearby mulberry gardens. When using on pear trees, it should be avoided as much as possible to prevent pesticide damage during the initial flowering period and about 20 days after falling.

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