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A botanical insecticide for controlling crop pests

A technology of botanical insecticides and agricultural pests, applied in the direction of insecticides, plant growth regulators, biocides, etc., can solve the problem of nicotine volatilization, nicotine persistence is not strong, nicotine preparations cannot be obtained Issues such as efficient development and application

Active Publication Date: 2021-08-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because nicotine is volatile and easy to oxidize, resulting in poor persistence and low stability of nicotine during field use, nicotine preparations have not been effectively developed and applied

Method used

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  • A botanical insecticide for controlling crop pests
  • A botanical insecticide for controlling crop pests
  • A botanical insecticide for controlling crop pests

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A botanical insecticide for preventing and controlling crop pests, the active ingredient of which has a structural formula of of nicotine citrate.

[0027] In this example, 5% of the active ingredient of nicotine citrate was weighed, 3% of solvent ethanol was added, 2.5% of emulsifier polyoxyethylene sorbitan fatty acid ester, 1.5% of fatty alcohol polyoxyethylene ether, and cosolvent B Glycol 2%, stir until the emulsifier dissolves and mix with other ingredients evenly; finally add deionized water to make up 100%, stir for 10min-20min and mix evenly to obtain 5% nicotine citrate soluble agent.

[0028] The preparation method of nicotine citrate is a preparation method known in the art, and will not be repeated here.

Embodiment 2

[0030] A botanical insecticide for preventing and controlling crop pests, the active ingredient of which has a structural formula of

[0031] of nicotine citrate.

[0032] In this example, 5% of the active ingredient of nicotine citrate was weighed, 3% of the emulsifier fatty alcohol polyoxyethylene ether, 1% of the polyethylene oxide block copolymer, 4% of the solvent cyclohexanone, and a cosolvent 2% polyethylene glycol, stir until the emulsifier dissolves and mix with other ingredients evenly, add deionized water to make up 100%, stir for 10min-20min and mix evenly to obtain 5% nicotine citrate microemulsion.

Embodiment 3

[0034] A botanical insecticide for preventing and controlling crop pests, the active ingredient of which has a structural formula of

[0035] of nicotine citrate.

[0036] In this example, 10% of the active ingredient of nicotine citrate was weighed, 1% of calcium dodecylbenzenesulfonate as an emulsifier, 3.5% of styrene ethylphenol polyoxyethylene ether, polyethylene oxide block copolymer 1.5%, add 4% ethyl oleate, solvent oil to make up 100%, stir for 10min-20min and mix evenly to get 10% nicotine citrate emulsifiable concentrate.

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PUM

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Abstract

The invention discloses a botanical insecticide for controlling crop pests, the active ingredient of which comprises nicotine citrate. The invention shows high biological activity to most piercing-sucking mouthparts pests, and can be used for the development and application of biopesticides for effective control of crop pests.

Description

technical field [0001] The invention belongs to the technical field of biopesticides, in particular to a botanical insecticide for controlling crop pests. Background technique [0002] Botanical pesticides refer to pesticides whose active ingredients are derived from plants. Often classified together with microbial pesticides or biochemical pesticides as biopesticides or pesticides of biological origin. As the public's health awareness and environmental awareness continue to increase, chemical pesticides have brought many negative effects on agricultural production due to environmental pollution and high residues. Biopesticides have the advantages of easy degradation in the environment, safety to humans and animals, and strong selectivity, which meet the requirements of sustainable development of green agriculture. [0003] Nicotine is derived from the Nicotiana plant of the Solanaceae family and is the main alkaloid of tobacco. The average content of nicotine in tobacco ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/40A01N37/36A01P7/04
CPCA01N37/36A01N43/40
Inventor 朱国念乔丽雅朱瞬瞬陈梦丽胡斌郑旭飞徐展益
Owner ZHEJIANG UNIV
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