Long lasting benzamide insecticide lufenuron
What is lufenuron (103055-07-8)?
The pesticide insecticide lufenuron is an organic compound with the chemical formula C17H8Cl2F8N2O3 and Cas 103055-07-8 white crystal. It is mainly used to control lepidopteran larvae in cotton, corn, vegetables, fruit trees, etc.; it can also be used as a sanitary medicine; it can also be used to control sucking mouthparts and insect pests.
Lufenuron is a benzamide insecticide. It is an insect growth regulator with stomach poisoning and contact killing effects. Its mechanism of action is to inhibit the synthesis of chitin. The pests will die after 2-3 days of feeding. Gaofeng is mainly used to control lepidopteran pests such as beet armyworm, Spodoptera litura, cabbage armyworm, diamondback moth, and cotton bollworm. Its characteristics are low toxicity, long lasting effect (two weeks), and strong permeability. Its disadvantage is that its price is high, which limits its scope and area of use.
The insecticide lufenuron is the latest generation to replace urea insecticides. The agent kills pests by acting on insect larvae and preventing the peeling process. It is especially effective against leaf-eating caterpillars on fruit trees. It has a unique killing mechanism against thrips, rust mites, and whiteflies. It is suitable for controlling synthetic pyrethrum. Esters and organophosphorus pesticides create resistant pests. The agent has a long duration, which helps reduce the number of sprayings; it is safe for crops and can be used on corn, vegetables, citrus, cotton, potatoes, grapes, soybeans and other crops, and is suitable for comprehensive pest management. The agent will not cause the re-infestation of sucking pests and has a mild effect on adults of beneficial insects and predatory spiders. It has long-lasting efficacy, is resistant to rain erosion, and is selective for beneficial arthropod adults. After application, the first action is slow, and it has an egg-killing function, which can kill newly laid eggs. The effect will be seen 2 to 3 days after application. It is low-toxic to bees and bumblebees and low-toxic to mammalian lice and mites. It can be used by bees when collecting nectar. It is relatively safer than organophosphorus and carbamate pesticides. It can be used as a good compounding agent and has good control effect against lepidopteran pests. Used in low dosage, it still has good control effect on caterpillars and flower thrips larvae; it can prevent the spread of viruses and effectively control lepidopteran pests that are resistant to pyrethroids and organophosphorus. The agent is selective and long-lasting, and has good control effects on late-stage potato stem borers. It is helpful to reduce the number of sprayings and can significantly increase production.
Physicochemical properties of lufenuron (103055-07-8)
Melting point 164.7-167.7°C;
Vapor pressure <1.2 X 10 -9 Pa (25 °C);
Solubility in water (20°C) <0.006mg/L.
Other solvents Solubility (20°C, g/L): methanol 41, acetone 460, toluene 72, n-hexane 0.13, n-octanol 8.9. Stability: Stable in air and light, DT 50 in water: 32 days (pH9), 70 days (pH7), 160 days (pH5).
Lufenuron (103055-07-8) mechanism of action
The insecticide lufenuron is an efficient, broad-spectrum and low-toxic insecticide that inhibits insect molting. It inhibits chitin biosynthesis and prevents the formation of insect cuticles to kill insects. It mainly has stomach poisoning effect, and also has a certain contact killing effect. It has no systemic effect, but has a good egg-killing effect, and has a significant control effect on young larvae.
Main features of lufenuron (103055-07-8)
1. Special insecticide
The insecticide lufenuron prevents and controls pests through gastric poisoning and contact killing effects, and kills eggs powerfully. More than 95% of the eggs laid by pests cannot hatch within 48 hours after receiving the pesticide, and eggs laid within 10 days cannot hatch normally; the adult insects will not hatch normally after exposure to the pesticide. Or after eating dew containing chemicals, although they cannot die, the number of eggs laid and the hatching rate of eggs are significantly reduced, which can effectively reduce the source of insects. Lufenuron has poor direct killing effect on adult insects. Therefore, it is recommended to use it in the early stage of pest occurrence for the best effect.
2. Broad insecticidal spectrum
The insecticide lufenuron is highly effective against lepidopteran pests in corn, soybeans, peanuts, vegetables, citrus, cotton, potatoes, grapes and other crops, especially against armyworm pests such as beet armyworm, Spodoptera exigua, and corn borer. , armyworm, Spodoptera exigua, Spodoptera frugiperda, cotton bollworm and other resistant pests with excellent efficacy. It also has a unique killing effect on thrips, rust mites, whiteflies and other sucking or sucking pests.
3. High insecticidal activity and poor quick effect
The insecticide lufenuron is more toxic to pests than organophosphorus and carbamate insecticides, and its toxicity is equal to or slightly lower than pyrethroid insecticides. Therefore, the amount of lufenuron used in actual applications is small. The prevention and control effect is outstanding. It usually takes 3-5 days for lufenuron to reach the peak of insecticide, so it is recommended to mix some fast-acting agents. For example, products such as emamectin salts and pyrethroids.
4. High safety
The insecticide lufenuron has low toxicity to fish and mammals, is selective for most beneficial insects, is safe for humans, livestock, crops and the environment, is safe for bees, and will not cause any more rampant sucking pests. It can be used in It will not cause phytotoxicity when used on most crops.
5. Long lasting effect
The insecticide lufenuron is an insecticide that after the insect comes into contact with the agent and feeds on the leaves containing the agent, the mouth will be anesthetized to stop eating within 2 hours, thereby stopping harming the crops. The peak of dead insects will be reached in 3 to 5 days, and the duration of effect is about 10 days. It can last up to more than 20 days, which can reduce the number of sprayings and reduce labor costs.
6. High leaf preservation rate
The purpose of killing insects with lufenuron is to prevent pests from harming crops. The leaf preservation rate is an indicator of the value of the product. Comparing the control effects of rice leaf roller, lufenuron can achieve a leaf preservation rate of more than 90% and can significantly increase production.
7. Low toxicity and low residue
The insecticide lufenuron is easily decomposed in crops and in soil and water. Therefore, the residue in agricultural products is very low and it does not pollute the environment. It is suitable for pollution-free comprehensive management of pests.
8. Good mixability
The insecticide lufenuron can be mixed with a variety of insecticides such as emamectin, fenfentrile, beta-cyhalothrin, etc. The synergistic effects are very significant and delay the development of insecticide resistance of pests.
Lufenuron (103055-07-8) function
The insecticide lufenuron mainly acts on insect larvae to prevent the peeling process and kill pests. It has strong egg-killing and insecticidal capabilities. Suitable for controlling pests resistant to pyrethroids and organophosphorus pesticides.
The pesticide lufenuron is an insect growth regulator belonging to the benzoylurea class of insecticides and acaricides. It is an inhibitor of chitin synthesis and is mainly used to control lepidopteran larvae in vegetables, cotton, corn, fruit trees, etc. , such as the control of beet armyworm, Spodoptera litura, cabbage armyworm, diamondback moth, cotton bollworm, melon borer, thrips, rust mite, citrus leafminer, planthopper and other pests. It can also be used as a sanitary medicine. Control pests in animals such as cattle. Lufenuron has a unique insecticidal mechanism: it inhibits insect molting and has good insecticidal and egg-killing effects. When pests eat crops sprayed with lufenuron, they stop feeding after 2 hours and enter the peak of insect death in 2 to 3 days. Lufenuron has the ability to kill insects and eggs, and kill large and small larvae; it lasts for 14 days; it has strong permeability, spraying on the front will kill dead insects and eggs on the back; it is resistant to rain erosion, and rain will not affect the drug after 15 minutes of spraying. efficiency and other advantages. In addition, lufenuron also has the characteristics of low toxicity and is suitable for the production of pollution-free agricultural products.
(1) Long validity period
① Spray the chemical liquid on crop leaves or eggs to directly kill eggs. More than 95% of the eggs laid by pests within 48 hours after the leaves are treated with pesticides cannot hatch; eggs laid within 10 days also cannot hatch normally.
② Although adult moths (moths) cannot die after being exposed to chemicals or eating dew containing chemicals, the number of eggs they lay and the hatching rate of eggs are significantly reduced, which can effectively reduce the source of insects.
(2) Efficient insecticide
After the pests come into contact with the pesticide and feed on the leaves covered with the pesticide, their mouths will be anesthetized within 2 hours and stop feeding, thus stopping harming the crops. The peak of dead pests will be reached in 3-5 days.
(3) Low residue
Lufenuron is relatively safe to use. In addition to being low-toxic to fish and mammals, it is selective for most beneficial insects. It is safe for humans, animals, crops and the environment. It is suitable for comprehensive management of pests without pollution.
What insects does lufenuron (103055-07-8) mainly kill?
(1) Fruit tree pests: Use the insecticide lufenuron to control citrus leaf miners and rust ticks. Spray 5% EC 1500-2500 times.
To control apple leafroller, spray 2 times during the overwintering larvae mating stage (flowering stage) and the large leaf rolling stage (after flowering): spray 1000-2000 times of 5% EC.
(2) Vegetable pests: The insecticide lufenuron is used to control diamondback moth and exigua exigua in cruciferous vegetables. Use 30-40 ml of 5% EC per mu and spray it with water. To control the bean pod borer, use 40-50 ml of 5% EC per mu and spray it with water.
To control potato tuber moth, use 40-60 ml of 5% EC per mu and spray it with water. To control cotton bollworm in tomatoes, use 50-60 ml of 5% EC per mu and spray it with water.
Cotton pests: Use the insecticide lufenuron to control cotton bollworms. Use 50-60 ml of 5% EC per mu (the cotton plants in Xinjiang are shorter, just use 30-40 ml), and spray with water. The control effect is better 7-14 days after taking the medicine.
How to use lufenuron (103055-07-8)
1. Single-agent use: The insecticide lufenuron has strong ovicide and insecticidal effects: to control cotton bollworm, beet armyworm and other pests, spray 5% lufenuron suspension 1000 times to control 1-day-old pests. The egg mortality rate reaches 87.30%; it has high stomach poisoning activity against 2 to 5 instar larvae of cotton bollworm. The control effect still reaches over 89% 15 days after application, which is highly safe for crops.
2. Use of compound preparations: In order to improve the control effect, the insecticide lufenuron can be used to control pests that have developed resistance to pesticides, and the effect is particularly outstanding.
For leaf rollers, leaf miners, apple rust mites, codling moths, etc., 5 grams of active ingredient can be sprayed with 100 kilograms of water. For tomato armyworm, beet armyworm, flower thrips, tomatoes, cotton bollworm, potato stem borer, tomato rust mite, eggplant fruit borer, diamondback moth, etc., 3 to 4 grams of active ingredients can be sprayed on 100 kilograms of water. When using it, be careful to use it alternately with other pesticides such as coulon, methane, and abamectin.
Lufenuron (103055-07-8) control targets
1. Prevention and control targets of lufenuron
The insecticide lufenuron is highly effective against a variety of crop lepidopteran pests, especially against resistant pests such as exigua exigua, Spodoptera exigua, and cotton bollworm.
2. Methods to prevent crop pests
(1) Choose improved varieties
The insecticide lufenuron can prevent insect pests. You can choose crop varieties with high resistance. Although the seeds of some crops have relatively strong genetic genes and can continue to be used as seeds, if the seeds are kept continuously for many years, the crops will be resistant to disease and stress. The ability will decrease year by year, so seeds whose resistance has been weakened must be replaced in time to improve the overall pest resistance of the crop.
(2) Reasonable crop rotation
After continuous planting of crops, there will be more and more pathogenic bacteria in the soil. When they accumulate in the soil to a certain extent, an outbreak will occur. Reasonable crop rotation can not only reduce the infestation of pests and diseases, but also effectively improve the physical and chemical properties of the soil and regulate soil fertility.
(3) Precision weeding
There are many weeds in the fields, which will affect the normal growth of crops. There are often diseases and insect pests on weeds, which will spread to the crops and the soil to cause harm. Therefore, timely cleaning of weeds in the fields is also an indispensable link to prevent diseases and pests. .
(4) Timely pruning
If you are planting fruit trees, branches affected by diseases and insect pests must be cleaned up in time. Once they spread to other healthy branches, it will increase the cost of preventing and controlling diseases and insect pests. The effect of treating diseases and insect pests is not as good as the effect of preventing pests and diseases.
(5) Scientific fertilization
Properly control the amount of fertilizer used. Do not apply too much and cause seedling burning. Farmyard manure must be fully decomposed before application, because fully decomposed farmyard manure will generate high temperatures during the composting and fermentation process, which can eliminate more than 90% of pathogenic bacteria and Insect eggs, etc., to minimize pests and diseases.
The pros and cons of the insecticides fenfentrile, indoxacarb, and lufenuron (103055-07-8)
Difennitrile: It is a new type of azole compound. It acts on the mitochondria of cells in insects and works through the multifunctional oxidase in insects, mainly inhibiting the transformation of enzymes.
Indoxacarb: It is a highly effective oxodiazine insecticide. It blocks sodium ion channels in insect nerve cells, causing nerve cells to lose function. This causes the pests to lose movement, become unable to eat, become paralyzed and ultimately die.
Tebufenozide: It is a new type of non-steroidal insect growth regulator and the latest developed insect hormone insecticide. It has an agonistic effect on the ecdysone receptor of pests, which can accelerate abnormal molting of pests and inhibit feeding, leading to physiological disorders and death of pests from starvation.
Lufenuron: The latest generation to replace urea insecticides. It is a benzoyl urea insecticide that kills pests by acting on insect larvae and preventing the peeling process.
1. Comparison of insecticide methods
Acaronitrile: It has stomach poisoning and contact killing effects, has strong permeability on plant leaves, has a certain systemic effect, and does not kill eggs.
Indoxacarb: has stomach poisoning and contact killing effects, no systemic effects, and does not kill eggs.
Tebufenozide: It has no penetrating effect and phloem systemic activity. It works mainly through gastric toxicity. It also has certain contact killing properties and has strong ovicidal activity.
Lufenuron: It has stomach poisoning and contact killing effects, no systemic absorption, and strong ovicide.
Amamectin salt: mainly gastric poison and also has contact killing effect. Its insecticidal mechanism is to hinder the motor nerves of pests.
All five are mainly stomach poisoning and contact-killing. The killing effect will be greatly improved by adding penetrants/expanders (pesticide auxiliaries) when applying pesticides.
2. Comparison of insecticidal spectrum
Decarnitrile: It has excellent control effect against boring, sucking and chewing pests and mites, especially the resistant pests such as diamondback moth, beet armyworm, Spodoptera litura, leaf roller, American spotted fly, Pod borers, thrips, spider mites, etc. have significant effects;
Indoxacarb: Mainly used to control lepidopteran pests such as beet armyworm, diamondback moth, cabbage caterpillar, Spodoptera litura, cotton bollworm, tobacco caterpillar, leaf roller and other lepidopteran pests.
Tebufenozide: It has unique effects on all lepidopteran pests, and has special effects on resistant pests such as cotton bollworm, cabbage caterpillar, diamondback moth, and beet armyworm.
Lufenuron: Mainly used to control pests such as leaf rollers, diamondback moths, cabbage caterpillars, exigua exigua, Spodoptera litura, whiteflies, thrips, rust ticks and other pests. It is particularly effective in controlling rice leaf rollers.
Emamectin salt: extremely active against lepidopteran insect larvae and many other pests and mites. It has both stomach poisoning and contact killing effects. For Lepidoptera armyworm, potato tuber moth, beet armyworm, codling moth, peach heartworm, rice borer, three stem borer, cabbage caterpillar, European corn borer, melon leaf roller, melon silk borer, melon borer Both borers and tobacco caterpillars have good control effects. Especially effective for Lepidoptera and Diptera.
Broad spectrum of insecticidal properties: emamectin > fenflufen > lufenuron > indoxacarb ≥ fenflufenozide
3. Comparison of dead insect speeds
Insect nitrile: 1 hour after spraying, pest activity weakens, spots appear, color changes, activity stops, coma, paralysis, and eventually death, reaching the peak of dead pests in 24 hours.
Indoxacarb: Insects stop feeding within 0-4 hours and are immediately paralyzed. The insect's coordination ability will decrease (which may cause the larvae to fall from the crop), and they usually die within 1-3 days after treatment.
Tebufenozide: After the pests feed, it can interfere with and destroy the original hormone balance in the insect's body, and lead to a refusal to feed. Generally, the pests stop harming them after 5 hours of feeding. A peeling reaction occurs in 1-2 days, and incomplete peeling occurs in 2-3 days. , refuse to eat, lose water all over the body, and eventually die, reaching the peak of dead insects in about 3 days.
Lufenuron: After the insect comes into contact with the agent and feeds on the leaves containing the agent, the mouth will be anesthetized within 2 hours and stop feeding, thereby stopping harming the crops. The peak of dead insects will be reached in 3-5 days.
Emamectin salt: The pests will become irreversibly paralyzed and stop eating. They will die after 2-4 days. The killing speed is slow.
Insecticide rate: fenflufen > indoxacarb > fenflufenozide > lufenuron > emamectin
4. Comparison of validity period
Trifenitrile: Does not kill eggs, only has outstanding control effect on older insects, and the insect control time is about 7-10 days.
Indoxacarb: Does not kill eggs, but kills both large and small lepidopteran pests. The control effect is about 12-15 days.
Tebufenozide: It has good egg-killing ability, and will form chemical sterilization after the pests feed, so it has a long lasting effect, usually around 15-30 days.
Lufenuron: It has a strong egg-killing effect and the insect control time is relatively long, up to 25 days.
Emamectin salt: long-lasting effect, 10-15 days for pests and 15-25 days for mites.
Duration of validity: emamectin > lufenuron ≥ fenflufenozide > indoxacarb > fenflufen
5. Comparison of leaf preservation rates
The ultimate goal of insecticide is to prevent pests from harming crops. As for whether the pests die quickly or slowly, or more or less, the leaf preservation rate is the ultimate indicator of the value of the product.
To compare the control effects of rice leaf rollers, the leaf preservation rate of lufenuron can reach more than 90%, emamectin salt can reach 80.7%, indoxacarb can reach 80%, fenflurazide can reach about 65%, and fenflufen can reach 65%. %about.
Leaf preservation rate: lufenuron > emamectin > indoxacarb > tebufenozide ≥ fenfluronil
6. Security comparison
Lufenuron: So far, there are no harmful effects. At the same time, this agent will not cause the re-infestation of sucking pests and has a mild effect on adults of beneficial insects and predatory spiders.
Difennitrile: Sensitive to cruciferous vegetables and melon crops, it is prone to phytotoxicity when used at high temperatures or in high doses;
Indoxacarb: It is highly safe and has no harmful effects. Vegetables or fruits can be picked and eaten the day after the pesticide is applied.
Tebufenozide: It is also highly safe, has no harmful reaction, and can cause chemical sterilization of some lepidopteran pests after use. At the same time, there will be a second dead period after 10 days, and it has no toxic side effects on bees, predatory mites, etc. , so highly secure.
Emamectin salt: It is highly safe for all crops in protected areas or at 10 times the recommended dosage. It is an environmentally friendly low-toxicity pesticide.
Safety: emamectin ≥ tebufenozide ≥ indoxacarb > lufenuron > fenfentrile
7. Medication cost comparison
The comparison of medication costs is: indoxacarb> fenflufenide> fenflufenozide> lufenuron> emamectin
The overall feeling of the five potions in actual use:
The first time I used lufenuron, I felt that the effect was very average. After using it twice in a row, I felt that the effect was very extraordinary.
On the other hand, I felt that the effect of fenfonitrile was very good after the first use, but after two consecutive uses, the effect was average.
The effects of emamectin, indoxacarb and tebufenozide are roughly in between.
Regarding the current pest resistance situation, it is recommended to adopt a "prevention first, comprehensive prevention and control" approach, and take measures (physical, chemical, biological, etc.) in the early stages of occurrence for effective prevention and control, thereby reducing the number and dosage of pesticides in the later period and delaying drug resistance. When using pesticides for prevention and control, it is recommended to combine plant-derived or biological-derived pesticides such as pyrethrins, pyrethrins, matrines, etc., and mix and rotate them with chemical agents to achieve the purpose of slowing down drug resistance; When using chemicals, it is recommended to use compound preparations and use them alternately to achieve good control effects.
8. Common compound preparations
1. Emamectin salt + fenfonitrile double kills insects and mites
It mainly kills pests through stomach poisoning and contact killing effects. By mixing or compounding, it can not only reduce the dosage of pesticides, but also delay the development of pest resistance. After mixing or compounding, it has outstanding effects on various vegetable pests such as diamondback moth, cabbage caterpillar, beet armyworm, Spodoptera litura, cabbage borer, spotted leafminer, fruit fly, psyllid, whitefly, thrips and other vegetable pests.
2. Emamectin salt + indoxacarb has good quick-acting effect and long-lasting effect.
They fully combine the insecticidal advantages of emamectin salt and indoxacarb, have relatively better quick-acting properties, have a relatively long duration of effect, and have strong permeability and good resistance to rainwater erosion. The main mode of action is that the pesticide is contacted or eaten by pests, and then enters the body of the pests, and the pests will immediately stop biting the crops. Under normal circumstances, insects will die in 4-6 hours, and the peak period of death will be reached in 18 hours. After mixing or compounding, the effect on lepidopteran pests such as rice leaf roller, beet armyworm, Spodoptera litura, cabbage caterpillar, diamondback moth, cotton bollworm, corn borer, leaf roller, heartworm and other lepidopteran pests will be relatively better. The bug is faster. Special reminder: emamectin salt will be absorbed by the plant shoot tissue. When the shoots open, the absorbed emamectin salt will exert its second insecticidal peak at this time, which can kill the insect pests that harm the crop shoots. Kill.
3. Emamectin salt + lufenuron expands the types of pests and delays the resistance of pests
Not only do they complement the control scope of the two single agents, but their different insecticidal mechanisms also delay pest resistance.
This formula can quickly control pests and has a relatively long lasting effect. It has the dual effects of killing insects and eggs. It needs special attention that we use the medicine during the peak hatching period of pest eggs-the period of high incidence of young larvae. It can kill the eggs. Simultaneous prevention and control can effectively reduce the base number of insects, thus bringing about a relatively long duration of effect. After mixing or compounding, it has a relatively good effect on pests such as beet armyworm, cabbage caterpillar, Spodoptera litura, rice leaf roller, etc., and the duration of effect can reach more than 20 days.
4. Emamectin salt + tebufenozide can greatly improve the insecticidal activity
After compounding or mixing, the stomach poisoning effect of the agent is relatively enhanced, it is less likely to develop resistance, the duration of effect is longer, and it is relatively safe for crops. The mixed or compounded pesticides have a good control effect on the eggs and larvae of armyworms in cruciferous vegetables.
Lufenuron (103055-07-8) Precautions
Spraying must be uniform and fine mist, and no rough spraying, heavy spraying, or missed spraying is allowed. When pests are common, the number of sprays should be increased to achieve the control effect. It is not advisable to increase the use concentration to increase the control effect. Spraying should be carried out after 5 pm. This agent should not be used in paddy fields.
① Rain within 2 hours after taking the medicine will not affect the medicine.
②Do not mix with alkaline pesticides.
③Follow the pesticide use regulations.
④The interval is 40 days.
Insecticide lufenuron (103055-07-8) price
Under normal circumstances, the price of the pesticide insecticide lufenuron will be affected by raw materials, market environment, research and development costs, etc. If you want to know the latest price of the pesticide insecticide lufenuron you need, please contact us to initiate an inquiry.
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Insecticide Lufenuron (103055-07-8) Supplier
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