Common pesticides in grape cultivation

A: fungicides:

1. Stone-sulfur mixture:

① dosage form: 20% paste, 30% solid, 45% solid, 45% crystal.

② control targets: black pox, powdery mildew and other overwintering bacteria sources.

Application time and method of ③: only in winter dormancy period and before germination in early spring; spraying with 3-5 Baumedouben once during the application period; spraying 1-15 Baumedouben once in most bud sprouting periods can control felt disease.

Notes for ④: 1. When this agent is applied at high temperature (≥ 32 ℃), the concentration and times should be reduced. Can not be mixed with Bordeaux liquid and taboo pesticides; 3. Clean the appliance in time after application; 4. Bordeaux solution should be used after an interval of 15 days, and Bordeaux solution should be used after an interval of 30 days. 5. The diluent can not be stored for a long time, so keep it in a cool and dry place and keep the temperature between 4 ℃ and 32 ℃.

2. Bordeaux liquid

① prevention and cure object: black pox, anthrax, brown spot.

② usage time, method: 1. Before the grape leaves spread to the fruit coloring, the grapes should be sprayed with lime half-volume 200 times solution (1-0.5-200), once every 10-15 days, to control black pox. In the first flower, full flower and fruit growth period, the lime half-dose 200-fold solution was sprayed once every 10-15 days for 2-3 times.

③ note: this agent is a protective agent, must be used before the disease, do not use in rainy days and high air humidity; can not be mixed with alkali pesticides, stone sulfur mixture, organic sulfur preparation, oil mixture, mineral oil; fruit can be harvested after 20 days.

3. Essential (80% Bordeaux liquid wettable powder)

① control objects: acid rot, black pox, anthrax, downy mildew, bacterial diseases.

The time and method of using ②: before or at the initial stage of the disease, spray 300-400 times of the liquid.

Notes for ③: this agent is a protective agent and should be used before the disease; it can be mixed with a variety of pesticides.

4. Thiophanate methyl (thiophanate methyl)

① dosage form: 50% wettable powder, 70% wettable powder, 50% suspending agent.

② control targets: powdery mildew, white rot, black pox, anthrax, gray mold.

Time and method of using ③: at the initial stage of the symptoms, spray the affected area with 80-1000 times liquid of 70% wettable powder.

④ precautions: this medicine should not be used alone for a long time, it is easy to produce drug resistance, and should be used alternately with other fungicides; it should not be mixed with alkaline agents and copper preparations; it is forbidden to be used within 15 days before fruit harvest.

5. Chlorothalonil

① dosage form: 75% wettable powder, 2.5% smoke agent, 10% smoke agent.

② control targets: powdery mildew, white rot, black pox, anthrax.

The time and method of using ③: spraying 75% wettable powder 500-800 times liquid at the initial stage of the disease.

④ Note: this pesticide is toxic to fish and should be applied far away from ponds, lakes and streams. It is forbidden to use within 20 days before fruit harvest.

6. Mancozeb

① dosage form: 70% wettable powder, 80% wettable powder, 30% suspension agent, 42% suspension agent, 43% suspension agent, 75% dry suspension agent.

② control targets: downy mildew, black pox, anthrax, powdery mildew, white rot, brown spot.

③ usage time and method: spray 70% wettable powder 600-800 times liquid at the initial stage of the disease, with an interval of 7-10 days.

④ Note: this fungicide is a protective fungicide and must be used before the disease of the plant, and the use of the fruit should be stopped within 15 days before harvest.

7. Cobo (Bordeaux powder + mancozeb)

① dosage form: 78% wettable powder.

② control targets: downy mildew, black pox, anthrax, powdery mildew, white rot.

The time and method of using ③: before or at the initial stage of the disease, spray 500-600 times of the solution, once every 7-10 days, a total of 4-5 times.

④ Note: this agent is a protective fungicide, should be used before or during the onset of the disease, spray evenly and thoughtfully, spray the whole plant completely.

8. Aluminum ethyl phosphate

① dosage form: 40% wettable powder, 80% wettable powder, 90% wettable powder.

② control objects: downy mildew and Phytophthora.

The time and method of using ③: spraying 40% wettable powder 200-300 times liquid, or 80% wettable powder 400-500 times liquid, or 90% wettable powder 600-800 times liquid at the initial stage of the disease.

Notes for ④: this medicine should be used before or in the early stage of the disease; it should not be mixed with strong acid and strong alkaline drugs.

9. Carbendazim

① dosage form: 50% wettable powder, 40% gel suspension.

② control targets: black pox, anthrax, white rot.

③ usage time and method: spray 50% wettable powder 600-800x liquid on the affected area when the disease is found.

④ precautions: this agent can not be used alone for a long time to prevent drug resistance, and can not be used alternately with carbendazim, methyl carbendazim and other agents with similar properties.

10. Metalaxyl

① dosage form: 25% wettable powder, 30% seed mixture.

② prevention and cure object: downy mildew (specific drugs, when other drugs are ineffective).

③ usage time and method: spray 25% wettable powder 500600 times during the onset period.

④ precautions: this agent is used continuously and is easy to produce drug resistance, so the drug is used no more than 3 times per season, and the interval is 10-15 days. Use this agent when the disease is more serious.

11. Triadimefon

① dosage form: 25% wettable powder, 20% EC, 15% aerosol.

② prevention and cure object: powdery mildew specific drug.

The time and method of using ③: 1500-2000 times of the solution was sprayed at the initial stage of the disease, and the interval was 15-20 days.

④ precautions: do not use it continuously or increase the concentration arbitrarily, it is easy to produce drug resistance; stop using drugs 15-20 days before fruit harvest.

12. Fu Mei Shuang

① dosage form: 50% wettable powder.

② control targets: White rot (effective drug), anthrax, house blight (effective).

The time and method of using ③: spraying 500-800fold liquid at the initial stage of the disease.

④ precautions: this agent has irritating effect on skin, so self-protection should be done when spraying. This agent is a protective fungicide with a residual period of about 1 week, and sometimes drug damage occurs on crops.

13. Polyoxin

① dosage form: 1.5% wettable powder, 2% wettable powder, 3% wettable powder, 10% wettable powder.

② control object: Botrytis cinerea.

Application time and method of ③: 1000-1500 times of 10% wettable powder was sprayed in the early and peak stages of the disease.

Notes for ④: this agent should not be mixed with acidic or alkaline pesticides, and should not be used more than 2 times a year.

14. Sukeling (Pythium)

① dosage form: 50% wettable powder.

② control object: Botrytis cinerea.

③ usage time and method: 1500-3000 times liquid was sprayed before the disease occurred.

④ precautions: this agent should be used before the onset of the disease, at the latest in the early stage of the disease, can not be used alone for a long time, easy to produce drug resistance, and should be used alternately with other fungicides.

15. Yibao (mancozeb + oxazolidone)

① dosage form: 68.75% water dispersible granule.

② control object: downy mildew.

③ usage time and method: before the appearance of downy mildew spot, spray 8-1200 times liquid, 7-10 days interval, a total of 3-4 times.

④ Note: this fungicide is a protective fungicide, and the effect of foliar spraying is the best before the disease is infected.

16. Frost urea manganese zinc

① dosage form: 72% wettable powder.

② control object: downy mildew.

③ usage time and method: spray 600x liquid in the initial or peak period of the disease, especially when downy mildew has drug resistance, and the effect is the best.