CN111213669A - Insecticidal composition containing dicyclaniliprole and benzoylurea - Google Patents

Abstract

The invention relates to an insecticidal composition containing diproprionate and benzoylurea, and the compound preparation mainly comprises diproprionate and benzoylurea, and can be made into water emulsion, suspension agent and microemulsion for spraying. Indoor and field test shows that the compound preparation has good control effect on sucking mouth parts pests such as thrips and the like. The indoor eggplant thrips test shows that the two show synergistic effect according to the mixture ratio of 1:10-10: 1. Has very obvious prevention and control effects on piercing-sucking mouthpart pests such as watermelon, rice, eggplant thrips and the like. The preparation has the advantages of various processing, strong selectivity, simple use, strong operability and practical application value.

Description

Insecticidal composition containing dicyclaniliprole and benzoylurea

Technical Field

The invention relates to an agricultural insecticide, the main effective components of which comprise dicyclopropyl tetramisole and benzoylurea insecticides.

Technical Field

The dicyclopropyl caterpillar is a novel insecticide developed by basf for preventing and treating piercing-sucking mouthpart pests, has a unique action mode, and can effectively prevent and treat piercing-sucking mouthpart pests such as aphids, whiteflies, some psyllids and the like. The mechanism of action of the diproprionate is different from that of the conventional insecticide, and the diproprionate acts by interfering the regulation of the transient receptor channel complex of the vanillic acid of the insect, so that the feeding and other behaviors of the insect are interfered, and finally the insect is starved and killed.

Although the dicyclopropionate can stop feeding within hours after application, the knockdown effect is slow. The product has long lasting period, and the lasting effect on aphids can last for 21 days. The dicyclopropyl is effective on both imagoes and larvae, but the drug is recommended to be applied in the larval stage, so that the control effect is better. The dicyclopropyl tetramat can be used for economic crops, field crops, ornamental plants and the like, and can effectively prevent and control piercing-sucking and sucking mouthparts pests, such as aphids, whiteflies, psyllids, scale insects, mealybugs, leafhoppers and the like. The fertilizer can be used for treating leaf surfaces, seeds or soil.

The propiconazole is environment-friendly, has low acute toxicity to beneficial arthropods such as powdery insects and the like, has low toxicity to natural enemies of insects, and is suitable for resistance management of pests and comprehensive control of pests.

Benzoyl urea insecticides, the main component of which is benzoyl urea compounds (BU), are Insect Growth Regulators (IGRs) which can inhibit the death or sterility of target pests caused by the synthesis of chitin, and are known as third-generation insecticides or novel insect control agents. Due to the unique action mechanism, higher environmental safety, broad-spectrum and efficient insecticidal activity and other attractive characteristics. At present, benzoyl urea compounds become an active field for creating new pesticides and are widely concerned by people. It has stomach poisoning effect on pests, less contact poisoning effect and ovicidal effect. Has no killing power to imagoes, but has the effect of sterility. No cross resistance with organophosphorus, carbamate, pyrethroid and other pesticides. The dosage is less, the toxicity is higher than that of organophosphorus and carbamate, and is equivalent to or slightly lower than that of pyrethroid insecticides. High selectivity, no chitin in human, animal and fowl, low toxicity to human and livestock, no chronic toxicity, less killing effect on natural enemy and aquatic animals, and high safety to bees. The insecticidal spectrum is wide, and the insecticidal composition can control a plurality of agricultural pests of lepidoptera, coleopteran and homoptera, and sanitary pests of mosquitoes, flies and the like in diptera.

Thrips is a common pest on crops such as vegetables, melons, rice and the like, the thrips absorbs juice of young tissues (branches, leaves, flowers, fruits and the like) of plants by adults and nymphs, the damaged young leaves and young tips become hard, curl and wither, the plants grow slowly, and internodes are shortened; young fruits (such as eggplants, cucumbers, watermelons and the like) are hardened after being damaged, and fruit drop is caused in severe cases, so that the yield and the quality are seriously influenced. Since the conventional insecticides generate severe resistance under long-term use, it is difficult to effectively control thrips during production. In the actual investigation and research, the inventor finds that the compounded propisochlor and benzoylurea have very obvious prevention and control effects on thrips, and according to a long-term tracking test, the compounded preparation formulation is difficult to generate resistance in the actual application process. And in the using process, the dosage is very low, and the negative effect on the environment is small.

Disclosure of Invention

The invention aims to provide a specific drug for preventing and treating crop pest thrips, which comprises the chemical components of ciprofloxacin and benzoylurea in a mass ratio of 1:10-10: 1.

The shuffled compound can be processed into various common pesticide formulations such as suspending agents, micro-emulsions, water emulsions and the like.

The technical scheme of the invention is as follows:

1. processing the diproprionate and the benzoylurea into the preparation with the content of 6-24 percent according to the mass ratio of 1:10-10:1

2. The above processed dosage forms are diluted according to different dilution times, and the indoor test of drug effect is carried out by using eggplant thrips

3. Further verifying actual drug effect by using eggplant thrips and cowpea thrips in field

The invention is characterized in that:

1. the mixture ratio is novel, and the pesticide single-dose varieties which are difficult to generate resistance by pests are selected

2. The processed dosage form is diversified, and the requirements of different levels of actual production are met

3. The use concentration is low, the prevention and treatment effect is obvious, so that the production cost is reduced, the negative influence on the environment is reduced, and the composition is processed into different dosage forms, and the specific formula is as follows:

24% dicyclopropyl tetramat-hexaflumuron (1:3) suspending agent

Weighing 6% of dicyclopropyl tetramat, 18% of hexaflumuron, 3% of agricultural milk 602, 2% of agricultural milk 2201, 3% of lignosulfonate, 0.2% of xanthan gum, 3% of ethylene glycol and 0.5% of organic silicon defoamer, and adding deionized water to supplement to 100%. The raw materials are mixed and then are subjected to high-speed shearing emulsification to prepare the 24 percent dicyclopropyl caterpillar ester and hexaflumuron suspending agent.

20% dicyclopropyl tetramat-hexaflumuron (1:3) microemulsion

Weighing 5% of diproprionocyclodinate, 15% of hexaflumuron, 6% of emulsifier such as Nongru No. 500 (calcium dodecylbenzenesulfonate), 2% of Nongru No. 2201, 3% of Nongru No. 600, 1% of methanol, 6% of xylene, 1.2% of epichlorohydrin, 0.4% of acetic anhydride and deionized water, supplementing to 100%, fully dissolving the above raw materials, and mixing uniformly to obtain 20% of diproprionocyclodinate-hexaflumuron microemulsion

18% dicyclopropyl tetramat-hexaflumuron (1:3) water emulsion

Weighing 4% of dicyclopropyl tetramat, 12% of hexaflumuron, 6% of agricultural emulsifier 600# phosphate (triphenylethylphenol polyoxyethylene ether phosphate), 2% of tween-60 # (sorbitan monostearate polyoxyethylene ether), 3% of agricultural emulsifier 600#, 8% of dimethylbenzene, 1% of triphenyl phosphite, 2% of ethylene glycol, 1.5% of xanthan gum, 0.8% of polyvinyl alcohol, 0.2% of benzoic acid and deionized water to make up to 100%. The raw materials are fully dissolved, mixed evenly and sheared to prepare the 6 percent aqueous emulsion of the diproprionate and the hexaflumuron

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

First, indoor biological activity assay

According to the invention, benzoylurea insecticide hexaflumuron is selected as an indoor activity determination reagent, the insecticide propiconazole and hexaflumuron are prepared into a suspending agent to test eggplant thrips which are fed indoors, the indoor test method refers to Wuwenjun's plant chemistry protection experiment technology introduction (1993), and the drug effect comparison is carried out on different proportions by calculating the co-toxicity coefficient (CTC) of different compound preparations, so that the mixing proportion with the best effect is determined. The test results are referred to the following table.

TABLE 1 toxicity of Dipropiconazole and hexaflumuron on thrips solani according to different formulas and proportions

Calculating the toxicity index and the co-toxicity coefficient (CTC value) of the mixed agent according to the Sun Yunpei method, wherein the toxicity index and the co-toxicity coefficient (CTC value) of each medicament are respectively calculated when the CTC is less than or equal to 80 and is an antagonistic action, the CTC is less than 80 and is an additive action, and the CTC is more than or equal to 120 and is a synergistic action.

As can be seen from Table 1, the synergistic effect is shown on eggplant thrips after the dicentrazone and the hexaflumuron are compounded in the proportion of 1:10-10: 1.

Second part of outdoor efficacy verification test

The following are the specific test methods in the field and the test conditions of the crop area

First, the field trial was divided into two treatments, one for the agent treatment and one for the control treatment, each treatment was repeated three times.

And secondly, selecting eggplants, watermelons and rice thrips for the test object respectively. The test time is 3 months and 11 months after 2017, and the area of each treatment cell is 20m². The water and fertilizer management of the community treated by the test is the same as that of the control area.

Thirdly, testing the medicament: 24% of dicyclopropyl cyrtomium urea (1:3) suspending agent; a microemulsion of 20% propiconazole-hexaflumuron (1: 3); 18% dicyclopropyl tetramat-hexaflumuron (1:3) water emulsion

And fourthly, insect pest investigation, wherein each cell is treated as one insect population investigation, each cell randomly selects three investigation points, eggplant thrips investigation is carried out, each point selects three leaves, watermelon thrips investigation is carried out, each point selects 3 watermelon tips for investigation, rice thrips investigation is carried out, each point selects 3 rice leaves for investigation, and statistical data is the average number of insect population investigation of the three points in each cell.

Fifth, data statistical method

Control effect (%) - (number of worms before application-number of worms after application)/number of worms before application × 100

Example one: 28.9/2017, Huizhou city Chenjiang town experiment base, Guangdong province, and eggplant thrips drug effect test data are shown in the following table

According to field experiments, the composition of the ciprofloxacin and the hexaflumuron in a ratio of 1:3 has a very good control effect on eggplant thrips, the minimum control effect is 89.42%, and the control effect difference among different processing formulations is not obvious. Example two: 12.9.2018, Huizhou suburbs, Guangdong province, cowpea thrips test condition data are as follows:

according to field tests, the compound of the ciprofloxacin and the hexaflumuron in a ratio of 1:3 has a very good prevention and control effect on cowpea thrips, the minimum prevention effect is 88.10%, and the prevention effect difference among different processing formulations is not obvious.

In conclusion, the dicyclopropionate and the benzoylureas are mixed for use, have excellent synergistic effect on piercing-sucking mouthpart pests, particularly thrips, and are pesticide compositions which are worthy of popularization.

Claims (7)

1. An insecticidal composition containing propisochloraz and benzoylureas comprises the chemical components of the propisochloraz and the benzoylureas in a mass ratio of 1:10-10: 1.

2. The composition of claim 1, which can be processed into various conventional pesticide forms such as suspension, microemulsion, and water emulsion.

3. The composition of claim 2, wherein the composition is prepared from propiconazole and benzoylurea in a mass ratio of 1:10-10:1, and the content of the composition is 6% -24%.

4. The composition of claim 1, wherein the mass ratio of the propiconazole to the hexaflumuron is 1:10-10:1, application in controlling eggplant thrips.

5. The composition of claim 1: 24% of dicyclopropyl cyrtomium urea (1:3) suspending agent;

weighing 6% of dipropylcyclobuthylate, 18% of hexaflumuron, 3% of agricultural milk 602, 2% of agricultural milk 2201, 3% of lignosulfonate, 0.2% of xanthan gum, 3% of ethylene glycol and 0.5% of organic silicon defoamer, adding deionized water to supplement 100%, mixing the raw materials, and carrying out high-speed shearing emulsification to prepare the 24% dipropylcyclobuthylate-hexaflumuron suspension.

6. The composition of claim 1: a microemulsion of 20% propiconazole-hexaflumuron (1: 3);

weighing 5% of dipropylcyclobuthylate, 15% of hexaflumuron, 6% of emulsifier such as Nongru No. 500 (calcium dodecylbenzenesulfonate), 2% of Nongru No. 2201, 3% of Nongru No. 600, 1% of methanol, 6% of xylene, 1.2% of epichlorohydrin, 0.4% of acetic anhydride and deionized water to make up to 100%, fully dissolving the above-mentioned raw materials and uniformly mixing them so as to obtain the invented 20% dipropylcyclobuthylate-hexaflumuron microemulsion.

7. The composition of claim 1: 18% of dicyclopropyl amitraz-hexaflumuron (1:3) water emulsion;

weighing 4% of dicyclopropyl tetramat, 12% of hexaflumuron, 6% of agricultural emulsion 600# phosphate (triphenylethylphenol polyoxyethylene ether phosphate), 2% of tween-60 # (sorbitan monostearate polyoxyethylene ether), 3% of agricultural emulsion 600#, 8% of xylene, 1% of triphenyl phosphite, 2% of ethylene glycol, 1.5% of xanthan gum, 0.8% of polyvinyl alcohol, 0.2% of benzoic acid and deionized water to be supplemented to 100%; the raw materials are fully dissolved, mixed evenly and sheared to prepare the 6 percent aqueous emulsion of the diproprionate and the hexaflumuron.