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Biological insecticide containing methoprene, preparation method and spraying device

A technology for biological insecticides and methoprene, which is applied in the field of preparation, biological insecticides containing methoprene, and spraying devices, can solve problems such as large doses, achieve enhanced effects, prolong storage period, and slow down attenuation speed Effect

Inactive Publication Date: 2021-09-24
CHINA TOBACCO HUNAN INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some laboratories have found that lower doses of methoprene are also effective, but compared with the results in the laboratory, higher doses are often required in the threshing and redrying workshop

Method used

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  • Biological insecticide containing methoprene, preparation method and spraying device
  • Biological insecticide containing methoprene, preparation method and spraying device
  • Biological insecticide containing methoprene, preparation method and spraying device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In a 100ml beaker, accurately weigh 5g of methoprene, 2g of OP-10, and 1g of propylene glycol monosalicylate, respectively, and put them into the beaker. Measure 60ml of ethanol and put them into the beaker to fully dissolve each component. Add 30g of water while stirring, mix evenly, transfer to a volumetric flask, and dilute to 100ml with water. After constant volume, transfer to a brown reagent bottle for use. This formula is suitable for on-line spraying and killing insects in the process of tobacco threshing and redrying. When in use, it is diluted with 50% (V / W) ethanol aqueous solution, and the content of the insecticide per kilogram of tobacco raw material is 2-20mg.

[0037]In an airtight but air-permeable container, put 20g of tobacco sheets, and spray the insecticide of this embodiment and a commercial insecticide of the same kind (the content of methoprene contained in the two is the same) on the tobacco sheets, and the amount of tobacco per kilogram of raw ...

Embodiment 2

[0042] In a 100ml beaker, accurately weigh 0.1g of methoprene, 0.1g of Span 80, 0.5g of Tween-80, and 0.1g of ascorbyl palmitate, respectively, and put them into the beaker. Measure 30ml of ethanol and put them into the beaker to fully dissolve For each component, transfer all the materials in the beaker to a 50ml volumetric flask, and dilute to 50ml with ethanol. After constant volume, transfer to a brown reagent bottle for use. This formula is suitable for killing mosquitoes and flies in water quality, especially for stagnant water for anti-fly sanitation treatment. It is moderately diluted with water when used, and it is recommended to add it at a concentration of less than 10ppm (the weight of methoprene relative to the weight of water source). This formula is also suitable for killing pests in grain storage, and it is recommended to add it at a concentration of 5ppm-10ppm (the weight of methoprene relative to the weight of grain).

Embodiment 3

[0044] Methoprene has a characteristic of light attenuation. Although it is applied to airtight packaging that does not see light in some cases, it is unavoidable to see light during the preparation and storage of the medicament. Therefore, the main purpose of embodiment 3 is to kill the present application. The light attenuation characteristics of the insecticides were compared with those of the prior art insecticides. In a 100ml beaker, accurately weigh 5.4g of methoprene, 3g of Span 80, 3g of Tween-80, 2g of ascorbyl palmitate serving as a light stabilizer, and 1g of thiophenol, then put them into the beaker, and measure 50ml Ethanol is put into the beaker to fully dissolve each component, add 40g water in high-speed stirring, transfer to the volumetric flask after mixing evenly, and water is settled to 100ml, thus obtains formula 1 representing the insecticide of the present application. After constant volume, transfer the material to a brown reagent bottle for use.

[00...

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Abstract

The invention discloses a biological insecticide containing methoprene, a preparation method and a spraying device. The insecticide is prepared from the following components in percentage by mass: 0.01-10% of methoprene, 0.01-5% of a surfactant, 0.01-10% of a light stabilizer, a proper amount of an isomer stabilizer and 75-99% of a solvent. The mixed solvent and the surfactant are adopted at the same time, so that the effective components can be uniformly dispersed into a solution, and the uniformity of the effective components can be ensured during use; the light stabilizer and the isomer stabilizer are added, so that the decay speed of methoprene in the insecticide is obviously slowed down, the storage period of the insecticide is prolonged, and the use effect of the insecticide is enhanced; and the biological insecticide has a very obvious killing effect on mosquitoes and flies in water and various insects such as lepidoptera, diptera, coleoptera and homoptera such as beetles and powder borers in grains and tobaccos, and can be applied to prevention and control of mosquitoes and flies in tap water, storage of grains and tobaccos, disinfection and insect killing of carpets and the like.

Description

technical field [0001] The invention relates to the field of biopesticides, in particular to a biopesticide containing methoprene, a preparation method and a spraying device. Background technique [0002] The chemical name of methoprene is 2E,4E-11-methoxy-3,7,11-trimethyl-dodecadienoic acid isopropyl ester (Isopropy1(2E,4E)-11-methoxy-3, 7,1 1-trimethy1-2,4-dodecadienoate.), is an insecticide or insect growth regulators (IGRs), it mimics the action of juvenile hormones, which can make the life history (cycle) of target insects Stop, it is effective for various insects of Lepidoptera, Diptera, Coleoptera and Homoptera. Insect growth regulators do not kill insects in the way of conventional insecticides. It works by preventing larvae from developing into adults. In order to kill insects in other morphological stages, low-toxicity pesticides are usually introduced as supplements to improve The efficacy of pesticides. Because the solubility of methoprene in water is too low,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/36A01N25/22A01P7/04B05B16/00B05B13/02
CPCA01N37/36A01N25/22B05B16/00B05B13/0278B05B16/95
Inventor 任建新罗嘉韩星李光华钟科军
Owner CHINA TOBACCO HUNAN INDAL CORP
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