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Buffalobur extract insecticide and preparation method thereof

A technology of Solanum thorns and extracts, which is applied in the field of pesticides and its preparation, can solve problems such as land barrenness, and achieve the effect of short safety intervals

Inactive Publication Date: 2012-06-13
张金林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This unwelcome weed grows almost everywhere and generally leaves the land barren

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment one: weight ratio is the insecticide of 0.2% Solanum solanum extract

[0021] Dissolve 0.2g of the Solanum nigrum extract in hot ethanol with a purity of 99%, and the temperature is controlled at about 60°C, then add 0.5g of epoxidized vegetable oil, 8g of penetrant T, 8g of Tween 80, and the rest with The ethanol that purity is 99% fills up to 100g, adds in the stirring container with thermometer, is heated to 60 ℃, mixes and stirs evenly, obtains 100g concentration and is 0.2% extract insecticide of Solanum nigrum, and above-mentioned percentage is all is the weight ratio.

[0022] Dilute the prepared 0.2% Solanum erythroglis extract insecticide 1000 times, and measure the toxicity to diamondback moth larvae with the leaf residue method. The indoor test results show that the insecticidal effect on 3rd instar diamondback moth larvae is 93.2% % (24 hours) and 95.7% (48 hours), the insecticidal effect to 4th instar diamondback moth larvae is 90.2% (24 hours) ...

Embodiment 2

[0023] Embodiment two: the weight ratio is the insecticide of 1% extract of Solanum echinacea

[0024] Dissolve 1 g of Solanum thornia extract in hot ethanol with a purity of 99%, and control the temperature at about 60° C., then add 1 g of epoxidized vegetable oil, 10 g of lignosulfonate M-11, 10 g of Tween 80, The rest is filled up to 100g with 99% ethanol with a purity of 99%, added to a stirring container with a thermometer, heated to 60°C, mixed and stirred evenly to obtain 100g concentration of 1% Solanum solanum extract insecticide, the above-mentioned All percentages are by weight.

[0025] The prepared 1% Solanum erythroglis extract insecticide was diluted 1000 times, and then the toxicity to diamondback moth larvae was measured by the leaf residue method. 96.4% (24 hours) and 98.2% (48 hours), and the insecticidal effect on 4th instar diamondback moth larvae is 95.1% (24 hours) and 96.7% (48 hours). The prepared 1% Solanum solanum extract insecticide was diluted 10...

Embodiment 3

[0026] Embodiment three: the weight ratio is the insecticide of 2% Solanum echinacea extract

[0027] Dissolve 2g of Solanum solanum extract in hot ethanol with a purity of 99%, control the temperature at about 60°C, then add 2g of epoxidized vegetable oil, 10g of lignosulfonate M-11, 10g of agricultural milk 500 # , the rest is 99% ethanol with a purity of 99% to make up to 100g, add in a stirring container with a thermometer, be heated to 60°C, mix and stir evenly, and obtain 100g concentration of 2% Solanum solanum thorn extract insecticide, The above percentages are all weight ratios.

[0028] Dilute the prepared 2% Solanum thornia extract insecticide 1000 times, and measure the toxicity to Plutella xylostella larvae with the leaf residue method. The indoor test results show that the insecticidal effect on the 3rd instar Plutella xylostella larvae is 98.2%. % (24 hours) and 99.8% (48 hours), the insecticidal effect to the 4th instar diamondback moth larvae is 97.3% (24 ho...

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Abstract

The invention relates to a buffalobur extract insecticide which is prepared by taking buffalobur extract as a main raw material and a preparation method thereof. The active ingredient of the insecticide is a glycoalkaloid insecticidal active substance with extremely high toxicity. The method comprises the following steps of: drying and crushing a buffalobur entire plant; and purifying by using CO2 supercritical extraction to obtain the glycoalkaloid (the active ingredients of the glycoalkaloid are alpha-solanine, beta-solanine, gamma-solanine and a small amount of alpha-chaconine, beta-chaconine and gamma-chaconine, wherein the alpha-solanine is a main ingredient) insecticidal active substance with extremely high toxicity. The insecticide has repelling, anti-feeding, touch-out and stomach poisoning effects, can be used for preventing pests of chewing mouthparts and pests of piercing-sucking mouthparts, and is mainly used for preventing lepidopterous larva and aphides on crops of vegetables, fruit trees and the like. Through research and application of the invention, the control and the utilization of the pests can be combined to realize the idea of changing the harm into things of value.

Description

technical field [0001] The present invention relates to an insecticide prepared by taking Solanum solanum as a main raw material and a preparation method thereof. The active ingredient is a highly toxic glycoside alkaloid insecticidal active substance. Background technique [0002] Solanum rostratum: scientific name: Solanum rostratum Dun, alias: Kansas thistle (Kansas thistle), prickly nightshade (prickly nightshade), famous name: buffalobur, taxonomic status 1 Solanaceae Solanaceae (Nightshade Family), Solanum Solanum, annual weed, Native to North America, it is a foreign harmful weed in my country. The stem is erect, and the upper part of the plant is branched, similar to a shrub. The whole plant is 15-60 cm high, with hairy surface and yellow hard spines. Its leaves are deeply divided into 5-7 lobes, with spines; the leaves are 5-12.5 cm long, whorled, stalked, with stellate hairs; the midrib and petiole are spiny. Calyx spiny, yellow flowers, split into 5 petals, 2.5-...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01P7/04
Inventor 张金林任承才康占海邢庆新韩文素李川闫淑娟魏学军李星陶晡张永升耿硕
Owner 张金林
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