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Synergistic acaricidal composition containing tebufenpyrad and spirodiclofen

A technology of spirodiclofen and pyrimidine, which is applied to pesticide and acaricidal compositions and application fields thereof, can solve problems such as crop damage and acaricide resistance, and achieves delaying drug resistance, improving control effect, and reducing pesticide use. amount of effect

Active Publication Date: 2015-05-06
GUANGDONG ZHONGXUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many generations of harmful mites and strong reproductive ability. Under suitable temperature and humidity conditions, the number of harmful mites doubles rapidly in a short period of time, so it is easy to develop resistance to acaricides and cause serious damage to crops.

Method used

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  • Synergistic acaricidal composition containing tebufenpyrad and spirodiclofen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 5

[0028] Formulation example 5: 35% tebufenfen·sirobudiclofen water-dispersible granules.

[0029] Tebuflufen 28%, Spirobufen 7%, Alkylphenol Polyoxyethylene Ether 10%, Sodium Dodecyl Benzene Sulfonate 10%, Sodium Carbonate 3%, Polyvinyl Alcohol 2%, Kaolin make up 100%. Mix the above-mentioned effective ingredients, dispersant, wetting agent, disintegrant, binder and filler uniformly, pulverize with an ultra-fine jet mill, knead, and then add to a fluidized bed granulation dryer for granulation, drying, By sieving, 35% tebufenfen-spirondiclofen water-dispersible granules can be prepared.

Embodiment 1

[0030] Biological Assay Example 1: Indoor Joint Toxicity Determination of Tebufenpyrad and Spirofendiclofen to Panonychus citrus

[0031] The test agent used 93% of the original drug of tebufenfen and 97% of the original drug of spirobudiclofen.

[0032] The test insects were Panonychus citrus nymphs collected from citrus orchards and reared indoors for 3 generations.

[0033] The test method adopts the leaf butterfly spray method (refer to "NY / T 1154.13-2008 Pesticide Indoor Bioassay Test Guidelines for Insecticides. Part 13: Leaf butterfly spray method"). The specific operation method is as follows:

[0034] Set 5 different concentration gradients for each single agent and mixed agent (on the basis of preliminary test results, the mortality rate of Panonychus citrus nymphs is set in a proportional progression within the range of 5%-90%).

[0035] Select citrus leaves with consistent growth, make leaf butterflies with a puncher, place a wet sponge block in a petri dish, put...

Embodiment 2

[0045] Biological Assay Example 2: Field efficacy test of tebufenpyrad and spirobudiclofen compound against Panonychus citrus.

[0046]Adopt 25% tebufenpyrad-spirondiclofen suspension concentrate (preparation embodiment 1) to be used for preventing and treating Panonychus citrus, investigate the insect population base before spraying, investigate the number of residual living mites respectively after 3d, 7d, 14d, and 30d after the medicine, During the investigation, 2 plants were checked in each plot, and 5 leaves of each plant were checked in four directions, east, west, north, south, respectively. A total of 40 leaves were checked in each plot, the number of live mites was recorded, and the control effect was calculated. The control effect calculation method is as follows:

[0047] Control effect (%) = (1-CK 1 ×Pt 1 / CK 2 ×Pt 2 )×100.

[0048] Among them: CK 1 Represents the number of worms in the control area before the drug; Pt 1 Represents the number of insect popu...

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Abstract

The invention relates to a synergistic acaricidal composition containing tebufenpyrad and spirodiclofen at the ratio of (20:1) to (1:20) in parts by weight, wherein the sum of the weight percent of tebufenpyrad and spirodiclofen is 5%-80% of weight percent of the acaricidal composition. The two effective compounds are compounded to achieve an obvious synergistic effect; the synergistic acaricidal composition has an excellent prevention and treatment effect on crops such as fruit trees, vegetables and cotton, and kinds of mite pests on flowers. The prevention and treatment effects are improved, the application amount of the pesticide is reduced, so that the cost is reduced; the environment pollution is reduced; resistance management of pest mites is facilitated; and the synergistic acaricidal composition has relatively large economic benefits and social benefits in popularization and application.

Description

technical field [0001] The present invention relates to a pesticide acaricidal composition and its application field, in particular to a synergistic acaricidal composition with tebufenpyrad and spirobudiclofen as active ingredients, which is applied to the mite killing on fruit trees, cotton and vegetables Prevention and treatment. Background technique [0002] Tebufenpyrad is a kind of obligate acaricide, which belongs to insect mitochondrial respiration inhibitor. Its muscle or nerve poison has rapid physiological effects, and it has good effect on red spider eggs and adult mites. [0003] The mechanism of action of spirodiclofen is mainly to inhibit the synthesis of mite fat. Spirodiclofen is a new pesticide modified on the basis of spirodiclofen. Its activity is 2-3 times that of spirodiclofen. , rust tick, tea yellow mite, cinnabarinus and two-spotted spider mite all have very good control effects. [0004] Acarids are a class of common pests that harm vegetables, fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/56A01P7/02A01N43/12
Inventor 吴泽伟冷忠国张志伟陈佛祥王礼文朱刚
Owner GUANGDONG ZHONGXUN AGRI TECH
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