How effective is the benzoylurea insecticide represented by diafenthiuron?
What is diafenthiuron (80060-09-9)?The insecticide diafenthiuron is a new type of thiourea high-efficiency insecticide and acaricide, which has contact killing, stomach poisoning, systemic and fumigation effects, and has certain ovicidal effects. Low toxicity, but highly toxic to fish and bees.
The insecticide diafenthiuron is transformed into a substance with insecticidal activity under ultraviolet light, and has strong activity against pests that have developed serious resistance to pesticides on vegetables. It can control aphids, whiteflies, leafhoppers, noctuidae pests and harmful mites on a variety of crops and ornamental plants. It is mainly used as wettable powder to make liquid spray to control vegetable diamondback moth, cabbage caterpillar and cotton spider mite. Generally, 20-30 grams of active ingredients are used per mu, and the effective period is 10-15 days. (Leafy vegetables using more than the standard measurement will cause irregular folds of the leaves, and burns will occur in severe cases)
Diafenthiuron (80060-09-9) Properties
The insecticide diafenthiuron is a new type of thiourea high-efficiency insecticide and acaricide, which has contact killing, stomach poisoning, systemic and fumigation effects, and has certain ovicidal effects. Low toxicity, but highly toxic to fish and bees.
Chemical name: 1-tert-butyl-3-(2,6-diisopropyl-4-phenoxyphenyl)thiourea
Molecular formula: C23H32N2OS
Molecular weight: 384
Pesticide Category: Insecticide/Acaricide
CAS registration number: 80060-09-9
Chemical Class: Thiourea
Mode of action: contact, stomach poisoning, systemic inhalation, high temperature fumigation
Diafenthiuron (80060-09-9) physical and chemical properties
The pure insecticide diafenthiuron is a white powder with a specific gravity of 1.08 (20°C), a melting point of 149.6°C, and a vapor pressure of <2×10-6 Pa (25°C). Solubility: 62 micrograms/liter in water at 25°C; 40 grams/liter in methanol, 280 grams/liter in acetone, 320 grams/liter in toluene, 8 grams/liter in ethane, and 23 in n-octanol at 20°C g/l. The appearance of the original drug is white to light gray powder, specific gravity 1.09 (20°C), pH 7.5 (25°C).
Diafenthiuron (80060-09-9) Toxicity
The insecticide diafenthiuron is a low-toxic insecticide and acaricide. Rat acute oral LD502068 mg/kg, mouse acute oral LD50604 mg/kg, rat acute percutaneous LD50>2000 mg/kg, acute inhalation (4 hours) LC50558 mg/m3. Although the acute toxicity of this drug is low, it has a certain accumulation in the case of repeated administration, so the World Health Organization (WHO) classifies this drug as moderate toxicity. The drug is non-irritating and sensitizing to rabbit skin and eyes. Under the test dose, it has no mutagenic, teratogenic and carcinogenic effects on animals (the ineffective dose of rat teratogenicity test is 5 mg/kg, and the ineffective dose of reproduction test is 30 mg/kg), and the two-year chronic and carcinogenic test of rats has no effect. The effective dose is 30 mg/kg. Dog one year chronic and carcinogenic test no effect dose 0.3 mg/kg. The maximum allowable daily intake (ADI) per person is 0.003 mg/kg/day.
Diafenthiuron (80060-09-9) Features
1. Strong quick-acting, it belongs to thiourea acaricide, and it can exert its efficacy within a few hours after spraying. It has systemic,
Contact, stomach poisoning and fumigating effects; by interfering with the energy metabolism of the nervous system, damage the nervous system
The basic function is to inhibit the synthesis of chitin, and the red spider is first paralyzed and then dies;
2. Wide range of prevention and treatment. Red spiders, aphids, whiteflies, leafhoppers, noctuidae pests and many other pests have
Effect.
It has the functions of contact killing, stomach poisoning, systemic absorption and fumigation.
Application of diafenthiuron (80060-09-9)
The insecticide diafenthiuron is a thiourea acaricide, which can exert its medicinal effect within a few hours after spraying, and has systemic, contact killing, stomach poisoning and fumigation effects; it can destroy the basic functions of the nervous system by interfering with the energy metabolism of the nervous system , Inhibition of chitin synthesis, spider mites paralyzed first, and then died.
The insecticide diafenthiuron has good quick-acting acaricidal properties; however, in order to fully release the toxins of the agent, it must be sprayed in direct sunlight (such as spraying on sunny days, not cloudy, early morning, evening spraying, etc.), in order to achieve the best effect. The thiourea group on the molecular structure cuts off the covalent bond of the sulfur atom under the action of sunlight and multifunctional oxidase to turn it into a carbodiimide with strong insecticidal and acaricidal effects. Therefore, it is suitable to be used in sunny days.
The insecticide diafenthiuron is effective against adults, larvae, nymphs and eggs, and can be used to control mites (tetranychids, rust mites), aphids on fruit trees (citrus, apple), cotton, vegetables, tea and ornamental plants , whitefly, leafhopper, and various moth pests have high control efficiency, and resistant diamondback moth, cabbage caterpillar and leaf tortrix have been produced.
When the insecticide diafenthiuron is seriously infested with mites, especially when adults, larvae, nymphs and mite eggs exist at the same time, the necessary dosage must be ensured. 25% diafenthiuron should not be sprayed more than 4000 times, and spray to the tip of the leaf to drip water until.
The insecticide diafenthiuron has a novel way of killing mites. Unlike other acaricides, it is guaranteed to be used twice in a row, once every 15 days, and it can be kept free of mite damage for a long time.
The insecticide diafenthiuron cannot be mixed with alkaline pesticides, but it can be mixed with Bordeaux mixture for immediate use, and spraying in a short time will not affect the efficacy of the pesticide.
The insecticide diafenthiuron does not harm natural enemies, and is safe and environmentally friendly.
Application of diafenthiuron (80060-09-9) in killing mites
The insecticide diafenthiuron is a thiourea acaricide, which can exert its medicinal effect within a few hours after spraying, and has systemic, contact killing, stomach poisoning and fumigation effects; it can destroy the basic functions of the nervous system by interfering with the energy metabolism of the nervous system , Inhibition of chitin synthesis, spider mites paralyzed first, and then died.
Conditions of Use
·Acaricide is quick-acting; however, in order to release the toxin completely, it is necessary to choose the weather with direct sunlight for spraying (such as spraying on sunny days, do not choose cloudy days, early morning, evening spraying, etc.) to achieve the best effect. The thiourea group on the molecular structure cuts off the covalent bond of the sulfur atom under the action of sunlight and multifunctional oxidase to turn it into a carbodiimide with strong insecticidal and acaricidal effects. Therefore, it is suitable to be used in sunny days.
Suitable
Effective against adults, larvae, nymphs and eggs, and can be used to prevent and control mites (tetranychids, rust mites), aphids, whiteflies, leaves on fruit trees (citrus, apple), cotton, vegetables, tea and ornamental plants Cicadas, various moth pests, etc. have high control efficiency, and resistant diamondback moth, cabbage caterpillar and leaf tortrix have been produced;
When the mite infestation occurs seriously, especially when adults, larvae, nymphs and mite eggs exist at the same time, the necessary dosage must be ensured, 25% diafenthiuron should not be sprayed more than 4000 times, and spray until the tip of the leaf drips.
·The method of killing mites is novel, different from other acaricides, it is guaranteed to be used twice in a row, once every 15 days, and it can keep no mite damage for a long time.
·It cannot be mixed with alkaline pesticides, but it can be mixed with Bordeaux mixture for immediate use, and spraying in a short time will not affect the efficacy of the medicine.
·No harm to natural enemies, safe and environment-friendly.
Conditions of use of diafenthiuron (80060-09-9)
The insecticide diafenthiuron has good acaricidal properties; however, in order to fully release the toxin of the agent, it must be sprayed in direct sunlight (such as spraying on sunny days, do not choose cloudy days, early morning, evening spraying, etc.), so as to achieve the best effect. The thiourea group on the molecular structure cuts off the covalent bond of the sulfur atom under the action of sunlight and multifunctional oxidase to turn it into a carbodiimide with strong insecticidal and acaricidal effects. Therefore, it is suitable to be used in sunny days.
Performance characteristics of diafenthiuron (80060-09-9)
1. Unaffected by temperature, spray pesticides on the front and kill insects on the back.
2. It has strong systemic, contact, stomach poisoning and conduction effects.
3. The insecticidal speed is fast, and the aphids begin to fall by themselves about 10 minutes after spraying.
4. It has a long duration and can still effectively kill regenerated aphids 7-8 days after application.
5. Control highly resistant aphids on cotton, peach trees and watermelons for about 15 days.
4. Effective against aphids, planthoppers, mirid bugs, scarabs, scale insects, ladybugs and various piercing-sucking pests. It is more effective on the larvae and eggs of red and white spiders and cotton bollworms.
Main features of diafenthiuron (80060-09-9)
(1) Wide range of insecticides: Diafenthiuron is an insecticide and acaricide that can control aphids, whiteflies, leafhoppers, noctuidae pests, red spiders, spider mites and tea leaves on various crops and ornamental plants. yellow mites.
(2) Diafenthiuron has contact killing and stomach poisoning effects, and has good systemic conductivity. It mainly acts on the nervous system of pests. Once the pests eat, they can be quickly paralyzed within a few minutes, and the pests can be poisoned within 2 to 4 hours. die.
(3) Long-lasting effect: diafenthiuron has good systemic conductivity, which can not only interfere with the energy metabolism of the nervous system, destroy the basic functions of the nervous system, but also inhibit the synthesis of chitin in pests, and is harmful to adult mites. , larvae, nymphs and eggs all have good control effects, and are more effective in killing insects.
(4) Good compatibility: diafenthiuron is a thiourea insecticide and acaricide, which can be used with abamectin, emamectin benzoate, pyridaben, etoxazole, bifenbutyl and other insecticides. Mite insecticides are mixed for better insecticidal effect.
(5) High activity at high temperature: Diafenthiuron has low insecticidal activity at low temperature. When the temperature exceeds 25°C, the acaricidal and insecticidal activities are greatly improved, and the insecticidal and acaricidal effects are better.
Function characteristics of diafenthiuron (80060-09-9)
Insecticide diafenthiuron is a new type of thiourea insecticide and acaricide, widely used in cotton, fruits, vegetables and tea trees. The drug is a selective insecticide, which has systemic and fumigation effects, and is converted into a substance with insecticidal activity under ultraviolet light, so it is advisable to use the drug on sunny days. It can control sensitive strains of aphids, aphids resistant to carbamates, organophosphates and pyrethroids, leafhoppers and whiteflies, etc. It can also control the damage of diamondback moth, cabbage butterfly and noctuid moth. This medicine can be mixed with most insecticides and fungicides.
The role of diafenthiuron (80060-09-9)
The insecticide diafenthiuron has good acaricidal properties; however, in order to fully release the toxin of the agent, it must be sprayed in direct sunlight (such as spraying on sunny days, do not choose cloudy days, early morning, evening spraying, etc.), so as to achieve the best effect. The thiourea group on the molecular structure cuts off the covalent bond of the sulfur atom under the action of sunlight and multifunctional oxidase to turn it into a carbodiimide with strong insecticidal and acaricidal effects. Therefore, it is suitable to be used in sunny days.
The insecticide diafenthiuron is a new type of thiourea insecticide and acaricide, which has contact killing, stomach poisoning, systemic and fumigation effects, and has a certain ovicidal effect. Low toxicity, but highly toxic to fish and bees. It is transformed into a substance with insecticidal activity under ultraviolet light, and has strong activity against pests that have developed severe drug resistance on vegetables. It can control aphids, whiteflies, leafhoppers, noctuidae pests and harmful mites on a variety of crops and ornamental plants. It is mainly used as wettable powder to make liquid spray to control vegetable diamondback moth, cabbage caterpillar and cotton spider mite. Generally, 20-30 grams of active ingredients are used per mu, and the effective period is 10-15 days.
The insecticide diafenthiuron is a thiourea acaricide, which can exert its medicinal effect within a few hours after spraying, and has systemic, contact killing, stomach poisoning and fumigation effects; it can destroy the basic functions of the nervous system by interfering with the energy metabolism of the nervous system , Inhibition of chitin synthesis, spider mites paralyzed first, and then died.
The role of the insecticide diafenthiuron is introduced here. Diafenthiuron is effective against adults, larvae, nymphs and eggs, and can be used to control mites on fruit trees (citrus, apple), cotton, vegetables, tea and ornamental plants It has high control effect against insects such as spider mites, rust mites, aphids, whiteflies, leafhoppers, and various moth pests, and has produced resistant diamondback moths, cabbage caterpillars, and leaf rollers.
Diafenthiuron (80060-09-9) control object
The insecticide diafenthiuron can be used to control mites (tetranychids, rust mites), aphids, whiteflies, leafhoppers and various moth pests on fruit trees (citrus, apple), cotton, vegetables, tea and ornamental plants. It has a high control effect, especially for resistant pests such as diamondback moth, cabbage caterpillar and leaf tortrix.
1. It is effective for adults, larvae, nymphs and eggs, and can be used to control fruit trees (citrus, apple), cotton, vegetables, tea and ornamental plants (tetranychids, rust mites), aphids, whitefly, Leafhoppers, various moth pests, etc. have high control efficiency, and resistant diamondback moth, cabbage caterpillar and leaf tortrix have been produced;
2. When the mite infestation is severe, especially when adults, larvae, nymphs and mite eggs exist at the same time, the necessary dosage is necessary. 25% diafenthiuron is not more than 4000 times sprayed until the tip of the leaf drips.
3. The method of killing mites is novel, unlike other acaricides, it can be used twice in a row, once every 15 days, and it can keep no mite damage for a long time.
4. It cannot be mixed with alkaline pesticides, but it can be mixed with Bordeaux mixture for immediate use, and spraying in a short time will not affect the efficacy of the pesticide.
5. No harm to natural enemies, safe and environmentally friendly.
The above is the application of diafenthiuron. Farmers can adjust the dosage according to different crops and control the occurrence of pests in time.
Which pests can be eliminated by diafenthiuron (80060-09-9)
Diafenthiuron belongs to the thiourea class of insecticides and acaricides. It has dual effects of contact killing and stomach poisoning. Diafenthiuron has good effects in controlling adults, eggs, juveniles and nymphs. It can be used for fruit trees, Cotton, vegetables and tea plantation spider mite, staggering line mite uoko whitefly, aphids, leafhoppers, cabbage caterpillars and other harmful mites and pests.
Diafenthiuron products include 80, 50 wettable powder, 25 ring emulsifiable concentrate, 50, 500 g/L suspension concentrate.
1. For apple and citrus pest mites, use 50% wettable powder 1000 to 2000 times liquid or 25% emulsifiable oil 1000 to 1500 times liquid spray, and the effective period can reach 20-30 days.
2. For Plutella xylostella of cruciferous vegetables, use 50 to 75 grams of wettable powder of 80, 80 ml to 100 ml of suspending agent of 50, or 80 ml to 25 rings of emulsifiable oil per acre in the 1st to 2nd instar larvae. 120ml; for cabbage caterpillar, use 60ml to 80ml of twenty-five EC per mu on average; for beet armyworm, use 60ml to 100ml of fifty suspension concentrate per mu on average; routine spraying on water, the duration of effect is about one week.
3. For spider mites, aphids and leafhoppers of cotton, use 60 to 80 grams of 50 suspension concentrate or 50 wettable powder per mu; cotton bollworm, use 100 ml to 150 ml of 25 emulsifiable oil per mu. water spray.
4. For tea leafhoppers, use 100ml to 120ml of 50% suspending agent per mu and spray on water.
This agent is highly toxic to fish and bees, so be careful when using it.
How to use diafenthiuron (80060-09-9)
For cotton, peach trees, and watermelon, mix 10-20ml of this product with 15kg of water, and spray evenly.
Safety status of diafenthiuron (80060-09-9)
The insecticide diafenthiuron not only has excellent activity against harmful mites in the larval, nymph and adult stages, but also has excellent control effect on resistant diamondback moth, and is cost-effective, so it is very popular, but diafenthiuron is prone to pesticide Phytotoxicity, especially in some sensitive varieties of cabbage and cabbage, so it should be used with great care. Strict control of dosage is the key factor to avoid diafenthiuron injury. In actual production and sales, users must be reminded to apply the drug according to the recommended dosage to avoid injury; under normal conditions, the dosage of 25% diafenthiuron EC should not More than 50ml/mu.
The effect of the insecticide diafenthiuron is generally better under light conditions, but under high temperature, high humidity and strong light conditions, diafenthiuron is likely to cause phytotoxicity to seedlings, so choosing sunny mornings will generally have a better effect, and the phytotoxicity is relatively will be lighter;
After broccoli and cauliflower bloom, the curds are sensitive to diafenthiuron, so it should not be used after blooming.
Precautions for diafenthiuron (80060-09-9)
It should be re-sprayed in case of rain 1-2 hours after spraying.
The safe interval after application is 7-10 days.
The difference between diafenthiuron and diafenthiuron
Diafenthiuron and diafenthiuron are two different organic compounds, and the difference between them lies in their different structures. Diafenthiuron is an organic compound containing sulfur atoms, and its molecular formula is C3H6S, while diafenthiuron is an organic compound without sulfur atoms, and its molecular formula is C3H6O.
The difference between diafenthiuron and diafenthiuron lies in their different structures, and due to their different structures, their properties are also different. Diafenthiuron has stronger antioxidant properties than diafenthiuron, and diafenthiuron has stronger antibacterial properties. Due to the different properties of diafenthiuron and diafenthiuron, they are also different in application.
Difenthiuron is commonly used in the manufacture of antioxidants, while diafenthiuron is commonly used in the manufacture of antibacterial agents.
First of all, it is necessary to understand the structure and properties of diafenthiuron and diafenthiuron in order to use them correctly.
Secondly, according to your own needs, choose the appropriate methylthiobuthiuron or diafenthiuron to achieve the best effect.
Finally, the properties of diafenthiuron and diafenthiuron should be checked regularly to ensure their quality.
1. When using diafenthiuron and diafenthiuron, it is necessary to correctly understand their structure and properties in order to use them correctly.
2. When choosing diafenthiuron and diafenthiuron, you should choose the appropriate product according to your own needs to achieve the best effect.
3. Periodic inspection
Insecticide diafenthiuron (80060-09-9) price
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Insecticide diafenthiuron (80060-09-9) supplier
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