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Synergistic insecticidal composition containing dinotefuran and thiamethoxam, and application thereof

An insecticidal composition and the technology of thiamethoxam, which is applied in the field of pesticides, can solve the problem that no synergistic insecticidal composition of dinotefuran and thiamethoxam has been found, so as to reduce the dosage of pesticides in the field and reduce the cost of production and use , improve the effect of prevention and control

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

[0007] Rice planthoppers and aphids have gradually increased their resistance under the current long-term medication conditions, and the effect of single-dose pesticides on pest control has gradually declined. The inventors have found through research that synergistic compounding of pesticides is the key to expanding the control spectrum and improving the control efficiency. Effective measures, no synergistic insecticidal combination of dinotefuran and thiamethoxam has been found so far

Method used

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  • Synergistic insecticidal composition containing dinotefuran and thiamethoxam, and application thereof
  • Synergistic insecticidal composition containing dinotefuran and thiamethoxam, and application thereof
  • Synergistic insecticidal composition containing dinotefuran and thiamethoxam, and application thereof

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Experimental program
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Effect test

Embodiment 1

[0021] Dinotefuran and thiamethoxam were weighed and prepared in different proportions by conventional preparation methods to prepare dinotefuran-thiamethoxam emulsifiable concentrate with a mass percentage of the main active ingredient of 30%. The specific proportions are shown in Tables 1 and 2.

[0022] Indoor synergistic bioassay was carried out by rice stem dipping method, and the resistant rice planthopper was selected as the target pest. 50 Calculate the co-toxicity coefficient according to the study coefficient method introduced by Sun Yunpei method to determine whether the mixture has synergistic effect:

[0023] Table 1 Toxicity determination of dinotefuran and thiamethoxam compound and single dose against resistant rice planthopper.

[0024]

[0025] It can be seen from Table 1 that the combination of dinotefuran and thiamethoxam has a co-toxicity coefficient greater than 120, showing a good synergistic effect.

[0026] The resistant wheat aphids were selected a...

Embodiment 2

[0039] Weigh 8g of dinotefuran, 2g of thiamethoxam, 4g of calcium dodecylbenzenesulfonate, 3g of phenethylphenol polyoxyethylene ether, and solvent oil to 100g, and put the above raw materials into the mixing kettle according to the conventional method of preparing emulsifiable concentrate Mixed to prepare the main active ingredient weight percentage of 10% dinotefuran · thiamethoxam emulsifiable concentrate.

Embodiment 3

[0041] Weigh 2g dinotefuran, 8g thiamethoxam, emulsifier 1602 # 4g, emulsifier 500 # 2g, 4g of N-methylpyrrolidone, 6g of isopropanol, 3g of solvent naphtha, and the balance is water. The above raw materials are mixed in a mixing kettle according to the conventional method for preparing microemulsions, and the main active ingredient weight percentage is 10% % dinotefuran · thiamethoxam microemulsion.

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Abstract

The invention discloses a synergistic insecticidal composition containing dinotefuran and thiamethoxam, and an application thereof. The synergistic insecticidal composition employs dinotefuran and thiamethoxam as main effective components, wherein a weight ratio of dinotefuran to thiamethoxam is 0.1-70 : 0.2-70. The insecticidal composition can produce a relatively high synergistic interaction effect, overcomes or delays pest resistance, has fast insecticidal speed and long efficacy duration and reduces pesticide cost. The insecticidal composition can be used for preventing hemiptera pests and lepidoptera pests, is particularly suitable for preventing plant hopper, aleyrodid, leafhopper and aphid, and has an effect obviously higher than that of a single dosage.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a synergistic insecticidal composition with dinotefuran and thiamethoxam as main active ingredients and an application thereof. Background technique [0002] Dinotefuran is a third-generation neonicotinoid insecticide developed by Mitsui Chemicals. Its chemical structure is very different from that of the existing neonicotinoid insecticides. Its tetrahydrofuryl group replaces the previous chloropyridyl and chlorothiazolyl groups, and it does not contain halogen elements. At the same time, it is also different from nicotine in terms of performance. Therefore, it is currently called "furan nicotine". Dinotefuran chemical name: 1-methyl-2-nitro-3-(tetrahydro-3-furylmethyl)guanidine. [0003] The new-generation neonicotinoid insecticide dinotefuran mainly acts on the neurotransmitter system of insects, paralyzing them to death. The agent has a wide insecticidal spectrum, exc...

Claims

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Application Information

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IPC IPC(8): A01N51/00A01P7/04
Inventor 杨寿海徐盈陈志忠贠琰高瑞花
Owner NANJING HUAZHOU PHARMA
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