Organophosphorus insecticide chlorpyrifos
What is Clorpyrifos (2921-88-2)?
Clorpyrifos is an organophosphorus pesticide and is classified as a phosphorus ion. The oxymetabolite of Clorpyrifos is an inhibitor of acetylcholinesterase (AChE) and affects the neurological function of insects, humans and other animals. Clorpyrifos oxygenase (CPO) metabolites are hydrolyzed by plasma paraoxonase 1 (PON1), and overexpression of PON1 can alleviate neurotoxic sensitivity associated with CPO exposure.
Clorpyrifos (2921-88-2) insecticidal mechanism
The insecticide Clorpyrifos inhibits the activity of acetylcholinesterase AChE or cholinesterase ChE in the nerves in the body and destroys normal nerve impulse transmission, causing a series of poisoning symptoms: abnormal excitement, spasm, paralysis, and death.
Common dosage forms of Clorpyrifos (2921-88-2)
10% microcapsule suspension, 30% EC, 40% EC, 48% EC, 50% EC, 10% granules, 15% granules, 0.5% fertilizer mixture, etc.
Clorpyrifos (2921-88-2) Chemical Properties
The insecticide Clorpyrifos is a white crystalline solid, Cas 2921-88-2, with a melting point of 42.5-43°C, a saturated vapor pressure of 2.4X10-3Pa at 25°C, and a solubility in water of 2mg/L at 25°C and 650g in propanol. /L, 190g/L in benzene, 400mg/L in xylene, and 45g/L in methanol. In industrial products, it has a smell like kerosene or turpentine, is insoluble in water, and is easily soluble in benzene and ether.
The role of Clorpyrifos (2921-88-2)
The pesticide Clorpyrifos is a moderate pesticide and is extremely toxic to aquatic organisms and may have long-term adverse effects on the water environment. It has three functions of stomach poisoning, contact killing and fumigation, and has good control effect on various chewing and sucking mouthpart pests on rice, wheat, cotton, fruit trees, vegetables and tea trees. It has good mixing compatibility and can be mixed with a variety of pesticides and has obvious synergistic effect. Compared with conventional pesticides, it has low toxicity and is an alternative to highly toxic organophosphorus pesticides against natural enemies.
The insecticide Clorpyrifos has a wide range of applications, with Clorpyrifos having contact, stomach poisoning and fumigation effects. The residual period on the leaves is not long, but the residual period in the soil is longer, so it has better control effect on underground pests and is harmful to tobacco. Clorpyrifos is suitable for a variety of chewing and sucking mouthpart pests on rice, wheat, cotton, fruit trees, vegetables, and tea trees. It can also be used to control urban sanitary pests.
Principle of action of Clorpyrifos (2921-88-2)
To put it simply, the insecticide Clorpyrifos is actually a nerve agent. Its function is to inhibit the activity of enzymes in the insect body. It relies on the affinity between the inhibitor and the enzyme active zone to form an inhibitor complex, destroying normal nerve impulse transmission. Causes a series of poisoning symptoms: abnormal excitement, convulsions, paralysis, and death.
Characteristics of Clorpyrifos (2921-88-2)
The insecticide Clorpyrifos is an organophosphorus insecticide with broad spectrum. It is one of the main alternatives to highly toxic organophosphorus pesticides. It has contact killing, stomach poisoning and fumigation effects, but no systemic effect. The drug lasts for a long time in the soil, so it has a good control effect on underground pests.
1. Clorpyrifos is currently available in emulsifiable concentrate, granules, microemulsion and other dosage forms in China. Among them, the content is 40.7% EC (Tongshun, Lesben); most of them are 40% EC (Xinnongbao, chlorpyrifos, Bole). The more EC is used, the better the effect; 5% granules are mainly used for vegetables , for the control of underground pests on melons, it is an excellent variety that can replace the highly toxic pesticide 3% carbofuran granules; 30% microemulsion is being gradually promoted.
2. Clorpyrifos is a poisonous pesticide, highly toxic to fish and aquatic organisms, and toxic to bees. The residual period on leaves is generally 5-7 days, and the residual period in soil is longer. It is not harmful to most crops, but is sensitive to tobacco and tomato foliar sprays.
3. During the peak incubation period of the fifth generation of brown planthopper eggs or in fields with a low insect population, 25% buprofen (chlorpyrifos) plus 40% or 40.7% Clorpyrifos EC (Tongshun, Xinnongbao, Bo) can be used. Le, Lesben) 80-100 ml/mu, or 5% Fipronil 30-40 ml/mu plus 40%, 40.7% Clorpyrifos EC 80-100 ml/mu spray. When applying pesticides, maintain a 2-3 cm water layer in the field. For rice fields with high density and difficulty in spraying the pesticide liquid to the base of the rice, use a large-capacity spray with a stretcher-type sprayer; for rice leaf rollers and rice thrips, use Use 80-120 ml of 40.7% Clorpyrifos EC per mu and spray finely with a mist machine; for diamondback moth, cabbage caterpillar, and soybean pests, use 80-150 ml of 40.7% Clorpyrifos EC per mu for fine spray; for citrus leafminers and red For pests such as spiders and tea loopers, the dilution concentration of 40.7% Clorpyrifos EC is 1000-2000 times.
Clorpyrifos (2921-88-2) Advantages
1. Broad insecticidal spectrum
The insecticide Clorpyrifos has good control effect against a variety of chewing and sucking mouthparts pests. Such as: plant hoppers, aphids, rice leaf rollers, scale insects, cabbage caterpillars, flea beetles, leek maggots, garlic maggots, etc.
2. Various methods of pesticide application
The insecticide Clorpyrifos can be sprayed on leaves, mixed with soil, fertilizer and spread, can be applied to roots, and can be used as seed treatment to prevent underground pests. Clorpyrifos can not only be used on crops, but can also be used for sanitary insecticides in farms, schools, etc.
3. Fast insecticide
Because the insecticide Clorpyrifos has stomach poisoning, contact killing, and fumigation effects, it kills insects relatively quickly.
4. Applicable to a wide range of crops
The insecticide Clorpyrifos can be used on field crops such as rice, wheat, cotton, and corn, as well as on fruit trees, vegetables, and tea trees, including greenhouse crops.
Efficacy of Clorpyrifos (2921-88-2)
⒈ The insecticide Clorpyrifos has the triple effects of gastric poisoning, contact killing, and fumigation, and has good control effects on a variety of chewing and sucking mouthpart pests on rice, wheat, cotton, fruit trees, vegetables, and tea trees.
⒉ The pesticide Clorpyrifos has good compatibility when mixed with a variety of pesticides and has obvious synergistic effects (such as Clorpyrifos mixed with triazophos).
⒊ Compared with conventional pesticides, the insecticide Clorpyrifos has low toxicity and is safe to natural enemies. It is the first choice to replace highly toxic organophosphorus pesticides (such as 1605, methamidophos, omethoate, etc.).
⒋ The insecticide Clorpyrifos has a broad insecticidal spectrum and is easy to combine with organic matter in the soil. It is particularly effective against underground pests and lasts for more than 30 days.
⒌ The pesticide Clorpyrifos has no systemic effect, ensuring the safety of agricultural products and consumers, and is suitable for the production of pollution-free high-quality agricultural products.
Clorpyrifos (2921-88-2) usage technology
It can be used as a foliar spray or soil treatment to control underground pests, or as a broadcast application.
1. Wheat pests: To control wheat leafflies, use pesticides in the early stages of disease; to control aphids, spray pesticides before or after flowering; to control armyworms, spray pesticides when they are young larvae. Generally, 60-80ml of 40% EC is used per mu, mixed with 30-45kg of water.
2. Corn borer: During the trumpet stage of corn, use 80-100g of 15% granules to spread on the heart leaves.
3. Cotton pests: When controlling cotton aphids, lygus bugs, thrips, weevils, and bridge-building insects, spray pesticides when the number of pests increases rapidly; when controlling cotton bollworms and pink bollworms, spray pesticides during the peak hatching period of eggs to the larvae Spray before drilling the buds. Generally, 100-150ml of 40% EC is sprayed per acre, and 45-60kg of water is sprayed.
4. Root maggots of leeks and garlic: In the early stages of root maggot occurrence, use 400-500ml of 40% EC per acre and irrigate with irrigation water.
5. For underground pests: such as cutworms, grubs, wireworms, etc., irrigate the base of the plants with 800-1000 times of 40% EC per acre.
6. Vegetable pests: such as cabbage caterpillars, diamondback moths, aphids, thrips, whiteflies, etc. can be sprayed with 100-150ml of 40% EC mixed with 30-60kg of water.
Clorpyrifos (2921-88-2) control targets
1. Wheat aphids: Use about 50-75 ml of 40.7% Clorpyrifos EC per mu, mix with 40-50 kg of water and then spray.
2. Soybean heartworm and Spodoptera litura: Spray with 75-100 ml of 40.7% Clorpyrifos EC mixed with water.
3. Vegetable caterpillars, diamondback moths, and beanroot borers: Spray with about 100-150 ml of 40.7% Clorpyrifos EC per mu mixed with water.
4. Cotton aphid: Use about 50 ml of 40.7% Clorpyrifos EC per mu and mix with about 40 kg of water for spraying.
5. Fruit tree leaf miners and red spider mites: spray with 1000-2000 times of 40.7% Clorpyrifos emulsifiable concentrate, and 400-500 times of peach heartworm.
6. Tea geometrids, tea leaf gall mites, tea orange gall mites, tea fine moths, tea caterpillars, green thorn moths, and tea shortbeard mites can be sprayed with 300-400 times of 40.7% Clorpyrifos EC.
Clorpyrifos (2921-88-2) Method
1. Spray. Dilute 48% Clorpyrifos EC with water and spray.
①Use 800-1000 times liquid to control larvae of American spotted leafminer, tomato spotted flyminer, pea leafminer, cabbage leafminer and other larvae.
②Use 1000 times liquid to control cabbage caterpillar, Spodoptera litura larvae, lamp moth larvae, melon borer and other larvae as well as aquatic vegetable borers.
③Use 1500 times the solution to prevent and control the pupating larvae of Onion leaf miner and the larvae of Solanacea solani.
2. Root irrigation. Dilute 48% Clorpyrifos EC with water and irrigate the roots.
① During the initial spawning period of leek maggots, use 2000 times liquid light to control leek maggots, and use 500 liters of liquid medicine per acre.
② In the first or second watering of garlic irrigation in early to mid-April, use 250-375 ml of EC per acre and apply pesticides with the water to prevent root maggots.
③ Use 2000 times of liquid to water the roots of the plants to prevent damage caused by earthworms. Use 250-300 liters of liquid per acre.
3. Soil treatment. Use 2-4 kilograms of 3% Clorpyrifos granules per acre and apply it in ditches, holes or broadcasts before sowing or planting to control maggots, grubs, cutworms, etc.
1. To control rice leaf rollers, rice thrips, rice gall midges, rice planthoppers and rice leafhoppers, spray 60-120 ml of 40.7% EC with water per acre.
2. To control armyworms and aphids on wheat, use 50-75 ml of 40.7% EC per acre and spray 40-50 kg of water.
3. To control cotton pests and cotton aphids, use 50 ml of 40.7% Lesbon EC per acre and spray 40 kg of water. For cotton spider mites, use 70--100 ml of 40.7% Lesbon EC per acre and spray 40 kg of water. For cotton bollworm and pink bollworm, use 100--169 ml per acre and spray with water.
4. To control vegetable pests, use 100-150 ml of 40.7% Lesbon EC per acre sprayed with water.
5. To control soybean pests such as soybean borer and Spodoptera litura, spray 40.7% EC 75--100 ml with water per acre.
6. To control fruit tree pests such as citrus leafminer and spider mites, spray 40.7% EC 1000-2000 times. Use 400-500 times liquid spray to treat peach heartworms. This dosage can also be used to control hawthorn spider mites and apple spider mites.
7. To control tea tree insect pests, use liquid spray with an effective concentration of 300-400 times.
8. To control sugarcane pests, spray 20 ml of 40.7% EC with water per acre to control sugarcane woolly aphids.
9. To control hygienic pests, use 100-200 mg/kg spray for adult mosquitoes. The dosage for larval medication is 15-20 mg/kg in water. For cockroaches, use 200 mg/kg. For fleas, use 400 mg/kg. Use 100--400 mg/kg to smear or wash microscopic cattle ticks, fleas, etc. on the surface of livestock.
How to use Clorpyrifos (2921-88-2)
1. Prevent and control rice pests
(1) Rice leaf roller, rice thrips, rice gall midge
In the early stages and peak stages of rice leaf rollers, rice thrips and rice gall mosquitoes, use 60-100mL of 0% Clorpyrifos EC (active ingredient 24-40g) + 40-50kg of water per acre for spraying Prevention and treatment.
(2) Rice planthoppers and rice leafhoppers
During the peak period of rice planthoppers and rice leafhopper nymphs, spray 40% Clorpyrifos EC 80-120mL (effective effect 32-48g) + water 40-50kg per mu of land for spray control.
2. Prevent and control wheat pests
(1) Armyworm For wheat armyworm, you can spray 40% Clorpyrifos EC 40mL (active ingredient 16g) + water 40-50kg per acre for control.
(2) When wheat aphids are 2-3 days old, spray 50-75mL of 40% Clorpyrifos EC (20-30g of active ingredient) + 40-50kg of water per mu of land to control wheat aphids.
(1) For cotton aphids, spray 50 mL of 40% Clorpyrifos EC (active ingredient 20 g) + 40 kg of water evenly per acre.
(2) During the adult stage of cotton spider mites, spray 70-100 mL of 40% Clorpyrifos EC (active ingredient 28-40 g) + 50-75 kg of water per acre of land. For cotton fields with heavy damage from spider mites, spray can be used. Apply twice.
(3) In the larval stage of cotton bollworm and pink bollworm, spray 100-169mL of 40% Clorpyrifos EC (active ingredient 40-67.6g) + 50-75kg of water per acre for control.
4. Prevent and control vegetable pests
(1) When the cabbage caterpillar is 3 days old, spray 40% Clorpyrifos EC 80-120mL (active ingredient 32-48g) + water 50-75kg per acre for control.
(2) When diamondback moth is 2-3 days old, spray 100-150mL of 40% Clorpyrifos EC (active ingredient 40-60g) + 50-75kg of water per acre for control.
(3) During the blooming period of beans and kidney beans, which is also the peak egg-laying period of bean borer, spray 100-150mL of 40% Clorpyrifos EC (effectively 40-60g) + 50-75kg of water per acre of land. For prevention and control, spray once every 7-10 minutes, and spray three times in a row.
5. Prevent and control soybean pests
During the hatching period of soybean heartworm eggs and Spodoptera litura is 2-3 days old, spray 75-100 mL of 40% Clorpyrifos EC (effective medium 30-40g) + 50-75kg of water per mu of land for control.
6. Prevent and control fruit tree pests
(1) Citrus leafminer
In the early stages of citrus shoot growth, spray 40% Clorpyrifos EC 1000-2000 times (effective concentration 200-400㎎/kg) for control.
(2)Starscream
During the blooming period of spider mites, spray 40% Clorpyrifos EC 1000-2000 times (effective concentration 200-400㎎/kg) for control.
(3) Peach heartworm
When the peach heartworm egg and fruit rate is 0.5-1%, and before the first-instar larvae have eaten the fruit, spray 40% Clorpyrifos EC 800-1000 times (effective concentration 400-500㎎/kg) for control.
(4) Hawthorn spider mite, apple spider mite
Before and after apple trees bloom, spray 40% Clorpyrifos EC 800-1000 times (effective concentration 400-㎎/kg) for control.
7. Prevent and control tea tree pests
(1) Tea geometrid, tea fine moth, tea caterpillar, green thorn moth
When the larvae are 2-3 years old, spray 40% Clorpyrifos EC 1000-1300 times (effective concentration 300-400㎎/kg) for control.
(2)Tea gall mite, tea orange gall mite, tea short-bearded mite
Use 40% Clorpyrifos EC 800-1000 times (effective concentration 400-500㎎/kg) spray to prevent and control larvae before they expand.
8. Control of sugarcane woolly aphid pests
Before the adult woolly aphids migrate, or when the woolly aphids spread, use 20㎎ of 40% Clorpyrifos EC (effectively 8g) + 50-75kg of water per acre for even spray control.
9. Prevent and control sanitary pests
a. Mosquito adults: spray with 40% Clorpyrifos EC 100-200㎎/kg;
b. Larvae: Use 40% Clorpyrifos EC 15-20㎎/kg spray to control;
c. Cockroaches: Use Clorpyrifos EC 200㎎/kg spray to control;
d. Fleas: Use Clorpyrifos EC 400㎎/kg spray to control;
e. Tiny cattle ticks, fleas, etc. on the surface of livestock: apply or wash with 100-400㎎/kg.
Precautions for Clorpyrifos (2921-88-2)
1. Clorpyrifos cannot be used on melons, lettuce, and tobacco at the seedling stage. Please be careful to avoid the liquid drifting onto the above crops to avoid phytotoxicity.
2. This medicine cannot be mixed with alkaline substances.
3. This drug is toxic to bees, shrimps, crabs, silkworms, and fish. It is prohibited to be used in silkworm rooms, aquaculture areas, during the flowering period of flowering plants, and around mulberry gardens.
4. It is also prohibited to use in rice fields where fish or shrimps and crabs are raised. The field water after pesticide application cannot be discharged directly into the water body. It is also prohibited to use in areas where natural enemies such as Trichogramma are released.
5. Wear protective clothing, masks, gloves, etc. before applying the medicine. Eating, drinking, and smoking are strictly prohibited to avoid contact between the medicine liquid and the skin and eyes. Once in contact, be sure to clean it in time.
6. After applying the pesticide, be sure to clean the pesticide application equipment in time. Do not clean the pesticide application equipment in ponds, channels and rivers at will. Unused liquid medicine should be sealed and stored in a safe place.
7. This medicine can be used on citrus at most once per season, with a safe interval of about 28 days, and on rice with a safe interval of about 21 days, and can be used at most 2 times per season.
8. Avoid contact with pregnant and lactating women.
9. It is recommended to use it in rotation with other insecticides with different mechanisms of action.
Clorpyrifos (2921-88-2) insecticide price
Under normal circumstances, the price of the pesticide Clorpyrifos will be affected by raw materials, market environment, research and development costs, etc. If you would like to know the latest prices for the pesticide Clorpyrifos insecticide you need, please contact us to initiate an inquiry.
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