Chlorpyrifos is a commonly used insecticide . Compared with conventional pesticides, it has low toxicity and is relatively safe. What are the specific effects of chlorpyrifos? What is the correct use of chlorpyrifos?
Let’s take a look at the specific effects of chlorpyrifos:
1. It has the triple action of stomach poisoning, contact killing and fumigation. It has good control effect on various chewing and sucking mouthparts pests on rice, wheat, cotton, fruit trees, vegetables and tea trees.
2. It has good compatibility and can be mixed with various insecticides and has obvious synergistic effect (such as chlorpyrifos mixed with triazophos).
3. Compared with conventional pesticides, it has low toxicity and is safe for natural enemies. It is the first choice for replacing high-toxic organophosphorus pesticides (such as 1605, methamidophos, omethoate, etc.).
4. It has a wide spectrum of insecticides and is easy to combine with organic matter in the soil. It has a special effect on underground pests for more than 30 days.
5. No systemic action, guarantee the safety of agricultural products and consumers, and apply to the production of pollution-free quality agricultural products.
The method of chlorpyrifos is divided into the following three cases in terms of physical operation:
First, spray. Dilute with water after 48% chlorpyrifos EC and spray. 1 Use 800-1000 times liquid to control larvae of Liriomyza sativae, Liriomyza sativae, pea leaf miner, and Liriomyza. 2 Use 1000 times liquid to control larvae of cabbage caterpillars, larvae of Spodoptera litura, larvae of larvae, melons and larvae and aquatic vegetable aphids. 3 Using 1500 times liquid to control the larvae of the larvae of the larvae, the larvae of the yellow spotted larvae.
Second, the roots. Dilute with water after 48% chlorpyrifos EC and root. 1 In the early stage of spawning, use 2000 times liquid light to control cockroaches, 500 liters per acre. 2 In the first half of April, when garlic is filled with the first water or the second water, 250-375 ml of emulsifiable concentrate per acre is used, and the roots are controlled with water. 3 Using 2000 times liquid, pour the roots of the plants to prevent cockroaches, and use 250-300 liters of liquid per acre.
Third, soil treatment. Use 3% chlorpyrifos granules per acre 2-4 kg, before or after planting, ditch application, acupoint application or spreading, to prevent cockroaches, cockroaches, and tigers.
The use of chlorpyrifos for different crops is roughly as follows
1. The prevention and treatment of rice leafroller pests, rice thrips, gall midge, planthoppers, rice leafhopper 40.7% EC per acre with 60-120 ml of water spray.
2. Control of wheat pests Myxos and aphids use 50.75 ml of 40.7% emulsifiable concentrate per acre and spray 40-50 kg of water.
3. Prevention and control of cotton pests Cotton aphid with 50.7% of lesper emulsifiable concentrate 50 ml per acre, spray 40 kg of water. Cotton leaf mites are used with 40.7% lesbian emulsifiable concentrate 70--100 ml per acre and 40 kg of water spray. Helicoverpa armigera and red bollworm are sprayed on water with 100--169 ml per acre.
4. Control of vegetable pests Cabbage, Plutella xylostella, and Bean Field are sprayed with 40.7% lesper emulsifiable concentrate 100-150 ml per acre.
5. Control of soybean pests Soybean, Spodoptera litura, sprayed with water of 75.7% emulsifiable concentrate of 75-100 ml per mu.
6. Control of fruit tree pests Citrus leaf miner and red spider are sprayed with 40.7% emulsifiable concentrate 1000-2000 times. Peach worms are sprayed with 400-500 times solution. This dose can also be used to control Hawthorn red spiders and apple red spiders.
7. Prevention and control of tea tree pests Tea stalks, tea moths, tea caterpillars, green thorn moth, tea stalks, tea orange stalks, and tea squid are sprayed with an effective concentration of 300-400 times.
8. Prevention and control of sugarcane pests and cane sugar cane, sprayed with 20 ml of 40.7% emulsifiable concentrate per acre.
9. Hygiene pest control Adult mosquitoes are sprayed with 100-200 mg/kg. The drug is 15-20 mg/kg in water. Try 200 mg / kg. The flea is 400 mg/kg. The tiny calves, cockroaches, etc. on the surface of the livestock are smeared or washed with 100-400 mg/kg.
More information on chlorpyrifos, please pay attention to pesticide network
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