Chlorothalonil is a non-systemic broad-spectrum fungicide and is a low-toxic fungicide. It has a preventive effect on fungal diseases of various crops. Chlorothalonil has control effects on various diseases such as food crops, peanuts, vegetables, melons, fruit trees and tea. It is a low-toxic fungicide and is now widely used. The action time is best to spray the drug before or at the beginning of the disease, and the effect is best. The chlorothalonil has no systemic conduction, but after spraying onto the plant body, it can have good adhesion on the body surface. Sex, not easily washed away by rain, so the effect period is longer. .
Because of the use of a wide range of chlorothalonil, pesticide network Xiaobian only necessary here to explain the use of chlorothalonil, chlorothalonil, there are different methods using different diseases of crops, using different methods for different diseases of crops is not the same, The following information is used in small edits for some crops:
How to use chlorothalonil:
1. Control of rice blast
When controlling the leafhoppers, the field began to spray the medicine, and sprayed again every 7 days. Control the ear mites, spray each time in the rice break period and the heading stage. Use 75% chlorothalonil WP 1500-1900 g (active ingredient 1125 ~ 1425 g) per hectare, add 1050 liters of water, stir evenly.
2. Prevention and control of rice sheath blight
In the early stage of the disease or in the period from the ear-forming stage to the booting stage, spray the medicine after 7 days, and use 75% chlorothalonil WP 1500-1900 g per hectare (active ingredient 1125～1425 g). ), add 1050 liters of water, stir evenly, and focus on spraying the stems of rice.
3. Prevention and control of wheat leaf rust and leaf spot
Spraying at the beginning of the disease, spraying once every 7 days, spraying 2 to 3 times in a row, using 75% chlorothalonil WP of 1500-1900 g per hectare (effective ingredient 1125 ~ 1425 g ), add 1050 liters of water, stir and spray evenly.
4. Control of flower rust, brown spot, and black spot
Spraying at the beginning of the disease, spraying once every 7 to 10 days, and spraying 2 to 3 times in a row. Depending on the growth period and disease development of peanuts, it is decided whether to apply the medicine. Use 75% chlorothalonil wettable powder per hectare 1500 ~ 1800g (active ingredient 1125 ~ 1350g), or 40% Dakoning suspending agent commercial volume 1500 ~ 2250g (active ingredient 600 ~ 900g ), add 900 liters of water and stir evenly.
5. Prevention and treatment of cucumber downy mildew
Spray before the disease occurs or at the beginning, and spray once every 7 days. Continuous spraying 3 to 4 times, each time using 75% chlorothalonil wettable powder, 2200~4000 grams (active ingredient 1650~3000 grams), or 40% Dakoning suspension or 40% bacteria The amount of detergent agent is 2250~2625g (active ingredient 900~1050g), add 1125 liters of water, stir evenly spray, and reduce the amount of spray of cucumber seedlings. The prevention and control of cucumber downy mildew in greenhouse can be controlled by chlorothalonil smoker. In the early stage of disease, the smoke is smoked and fumigation, and the amount of 10% chlorothalonil in each greenhouse is 7500~12000g, or 20%. The amount of the smoke cleaner is 3,750 to 6,000 grams, or 30% of the bacteriostatic agent is 2,500 to 4,000 grams, or 45% of the chlorothalonil is 1667 to 2667 grams (the active ingredient is 750 to 1200 grams). It is also possible to use 5% chlorothalonil powder with a commercial quantity of 15,000 to 22,500 g (active ingredient 750 to 1125 g) to prevent and control the development of the disease.
6. Prevention and treatment of tomato early blight
Spraying at the beginning of the disease, spraying once every 7 to 10 days, spraying 3 to 4 times in a row, using 75% chlorothalonil or Dakeling WP of 2200 to 4000 g per hectare. (Active ingredient 1650 ~ 3000 grams), or 40% chlorothalonil suspending agent commercial volume 2250 ~ 2625 grams (active ingredients 900 ~ 1050 grams) plus water 1125 open, stir even spray, seedlings spray volume reduced.
7. Prevention and treatment of black spot and downy mildew in cabbage
In the early stage of the disease, the climatic conditions are favorable for spraying when the disease occurs, spraying once every 7 to 10 days, spraying 2 to 3 times continuously, and using 75% chlorothalonil WP for each hectare. 1700 ~ 2300 grams (active ingredient 1275 ~ 1725 grams), add 900 liters of water, stir evenly sprayed.
8. Prevention and control of bean rust, gray mold and anthracnose
Spraying at the beginning of the disease, spraying once every 7 days, spraying 3 to 4 times in a row, each time 75% of chlorothalonil wettable powder per hectare is 1700-2300 g (active ingredient 1275 ~ 1725 g ), add 900 liters of water, stir and spray evenly.
9. Prevention and control of potato late blight, early blight and gray mold
Spraying the medicine before the start of the potato closure, spraying once every 7 to 10 days, the number of spraying depends on the development of the disease, using 75% chlorothalonil WP for each hectare. 2300 g (active ingredient 1275 ~ 1725 g), add 900 liters of water and stir evenly.
10. Control of tomato leaf mold, varicose disease and anthracnose
Spraying at the beginning of the disease, spraying once every 7 days, the number of spraying depends on the development of the disease, using 75% chlorothalonil WP of 1700-2300 g per hectare (active ingredient 1275) ~1725 g), add 900 liters of water, stir evenly.
11. Prevention and treatment of anthracnose and early blight of eggplant, sweet pepper
Spraying at the beginning of the disease, spraying once every 7 days, spraying 3 to 4 times in a row, using 75% chlorothalonil WP of 1700-2300 g per hectare (active ingredient 1275~1725) g), add 900 liters of water, stir evenly.
12. Prevention and treatment of melon downy mildew and powdery mildew
Spraying at the beginning of the disease, spraying once every 7 days until the disease stops developing, using 75% chlorothalonil wettable powder per hectare, 1600-2200 g (active ingredient 1200 ~ 1650 g) Add 900 liters of water and mix evenly.
13. Prevention and treatment of grape powdery mildew and black pox
Spraying is started in the early stage of the onset of the leaves or two weeks after the flowering. Generally, the spray is sprayed once every 7 to 10 days. The number of sprays depends on the condition, and the spray concentration is 75% chlorothalonil WP 600-700 times. spray.
14. Prevention and control of pear rust
Spray before the flowering of the pear tree (in late March) and after flowering (in mid-April). If necessary, spray the drug once every two weeks after the second spraying. 75% chlorothalonil WP can be used each time. The powder is sprayed 500 times.
15. Prevention and control of apple anthracnose
In the first half of June, the first drug was sprayed, sprayed once every 15 days, and sprayed 4 to 5 times continuously, each time with 75% chlorothalonil wettable powder 500 times.
16. Prevention and treatment of citrus scab and smut disease
Spraying is started when the citrus petals fall off, spraying once every 10 to 14 days, spraying 2 to 3 times continuously, and spraying with 75% chlorothalonil WP 800 to 1000 times each time.
17. Prevention and control of tea anthracnose
Spraying in the germination stage of summer and autumn tea or in the early stage of disease, spraying once every 7 to 10 days, spraying 2 to 3 times in a row, using 75% chlorothalonil WP 600-800 times each time. Liquid spray.
Tips for China Pesticide Network : When using, be careful not to mix with alkaline pesticides such as stone sulfur. FU and DP are preferably used under the condition that the foliage has condensation, which is beneficial to the effect. Use concentration: 56% azoxystrobin chlorothalonil water emulsion 800-1000 times solution, 70% wettable powder 600 times solution, 50% wettable powder 400 times solution; 45% smoke agent 200-250g/mu; 5% powder 1kg /mu.
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