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Synergistic insecticidal composition containing lufenuron and pyrethroid insecticide and its application

A technology of pyrethroids and insecticidal compositions is applied in the field of synergistic insecticidal compositions, and can solve the problems of ineffective preparations and decline of Homopteran pests.

Inactive Publication Date: 2013-04-24
NANJING HUAZHOU PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the resistance of Homopteran pests is gradually increasing, and the effect of single-dose pesticides on pest control is gradually decreasing. There is no effective preparation for the control of Homopteran pests.

Method used

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  • Synergistic insecticidal composition containing lufenuron and pyrethroid insecticide and its application
  • Synergistic insecticidal composition containing lufenuron and pyrethroid insecticide and its application
  • Synergistic insecticidal composition containing lufenuron and pyrethroid insecticide and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Lufenuron and beta-cypermethrin were weighed, and lufenuron and beta-cypermethrin emulsifiable concentrates with a weight percentage of 40% of lufenuron and beta-cypermethrin were prepared respectively by conventional preparation methods. The specific proportions are shown in Tables 1 and 2.

[0019] The indoor synergistic bioassay was carried out by dipping leaves and insects, and the resistant cotton aphid was selected as the target pest. Each treatment was repeated 3 times, and the LC 50 Calculate the co-toxicity coefficient according to Sun Yunpei's method:

[0020] Table 1 Indoor toxicity test of lufenuron and beta-cypermethrin synergistic insecticidal composition and its single dose against cotton aphid

[0021]

[0022] The data in the table shows that the mixture of lufenuron and beta-cypermethrin has a synergistic effect on cotton aphids, and the co-toxicity coefficients of the three ratios listed in the table are all greater than 120, so the mixture of lufe...

Embodiment 2

[0028] Weigh 2g lufenuron and 8g etofenprox and dissolve in 8g vegetable oil, then add 1g ethylene glycol and 5g disodium alkylphenol polyoxyethylene ether sulfosuccinate, and stir evenly. Slowly pour the above solution into the remaining amount of water, make up 100 g, and fully stir to prepare a lufenuron-etofenprox emulsion in water with a main active ingredient of 10% by weight.

Embodiment 3

[0030] Weigh 8g lufenuron, 2g etofenproxil, 8g sodium lignosulfonate, 2g sodium lauryl sulfate, 5g ammonium sulfate, 5g polyvinyl alcohol, 2g borax, 68g kaolin, and disperse the above raw materials into granules by water Lufenuron-etoproxil water-dispersible granules with a main active ingredient weight percentage of 10% were prepared by the method.

[0031] Adopt embodiment 2 and 3, according to each mu land medication 10g, 20g, 30g medicament respectively, contrast medicament is 10% etofenproxil WP (wettable powder) 30g / mu, 10% lufenuron AS (water agent) 30g / mu. mu, and use 30kg of water per mu to control cotton aphids. 4 days, 10 days, 15 days, 20 days, and 30 days after application, the results were checked and processed. The results are shown in Table 3:

[0032] Table 3: Field test results of the synergistic insecticidal composition of lufenuron and etofenprox against cotton aphids

[0033]

[0034] It can be seen from the above table that the compound of lufenuron ...

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Abstract

The invention relates to a synergistic insecticidal composition containing lufenuron and a pyrethroid insecticide and its application. The synergistic insecticidal composition takes lufenuron and a pyrethroid insecticide as main effective components. The pyrethroid insecticide is any one of beta-cypermethrin, cyfluthrin, cyhalothrin, bifenthrin, alpha-cypermethrin, deltamethrin, fenvalerate, cypermethrin, fenpropathrin, silafluofen, lambda-cyhalothrin and ethofenprox. Specifically, the lufenuron and the pyrethroid insecticide are in a weight ratio of 0.1-80:0.1-50. The insecticidal composition can generate a high synergetic effect, overcomes and delays the insecticide resistance of pests, expands the prevention and control spectrum, has a fast insecticidal speed, and reduces the drug cost. The insecticidal composition provided in the invention can be used for controlling aphids, whiteflies and the like with similar resistance to Homoptera pests, and has an effect obviously higher than that of a single reagent.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a synergistic insecticidal composition containing lufenuron and pyrethroid insecticides and an application thereof. Background technique [0002] Lufenuron (Lufenuron), chemical name: RS)-1-[2,5-dichloro-4-(1,1,2,3,3,3-hexafluoropropoxy)phenyl]-3- (2,6-difluorobenzoyl)urea, white crystal, melting point 164.7~167.7℃, vapor pressure<1.2×10 - 9 Pa (25°C), solvent 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, DT50 in water: 32 days (pH9), 70 days (pH7), 160 days (pH5). The structural formula is: [0003] [0004] Lufenuron is the latest generation of substituted urea insecticides. The medicament kills pests by acting on insect larvae and preventing the peeling process, especially has excellent control effect on leaf-eating caterpillars such as fruit trees, and has a unique killing mechan...

Claims

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Application Information

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IPC IPC(8): A01N53/08A01N47/34A01N53/06A01N37/38A01N55/10A01N31/14A01P7/04
Inventor 杨寿海高瑞花刘军丽沈海峰张兰萍
Owner NANJING HUAZHOU PHARMA
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