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Plant-derived pesticide synergist and application thereof

A technology of botanical pesticides and synergists, applied in the field of pesticides, can solve the problems of difficulty in meeting the requirements of field control effects, insufficient activity, and low content of active ingredients, and achieve good market development prospects, no environmental pollution problems, and easy to use. The effect of decomposition

Inactive Publication Date: 2018-05-18
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biggest obstacle restricting the industrialization of botanical pesticides is that their active ingredients are low in content and activity is not strong enough, and the field control effect is difficult to meet the requirements.

Method used

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  • Plant-derived pesticide synergist and application thereof
  • Plant-derived pesticide synergist and application thereof
  • Plant-derived pesticide synergist and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The botanical pesticide synergist provided in this example uses the Astragalus membranaceus plant (including stems, leaves and roots) as a raw material to prepare the Astragalus membranaceus extract.

[0022] (1) Preparation Method 1 of Radix Astragalus Extract

[0023] Weigh 100g of dried and crushed Astragalus membranaceus plants and place them in a 5L extraction kettle, add 2.5 kg of methanol, reflux for 2-3 hours, concentrate under reduced pressure to remove the solvent to obtain the Astragalus membranaceus extract.

[0024] (2) Preparation Method 2 of Radix Astragalus Extract

[0025] Weigh 100g of dried and crushed Astragalus membranaceus plants and place them in an extraction kettle, adjust the pressure to 15-30MPa, the temperature at 40-60°C, and the time for 2-6h. After the extraction is completed, carbon dioxide is recovered under reduced pressure to obtain the extract of Radix Astragali.

[0026] (3) Preparation Method Three of Radix Astragalus Extract

[...

Embodiment 2

[0029] In this example, the synergistic effect of the methanol extract of Astragalus membranaceus on beta-cypermethrin, chlorpyrifos, carbosulfan, clothianidin, chlorfenapyr, fipronil and other insecticides was determined.

[0030] Refer to the method of the industry standard "NY / T 1154.1-2006 Indoor Bioassay Test Guidelines for Pesticides Insecticides Part 1: Drop Method for Contact Activity Test". The third-instar armyworm (Mythimna separata) larvae reared indoors were selected as test insects. According to the preliminary test, the test agent was dissolved in methanol, and set to 5 equal ratio serial concentrations for later use. Clean the micro-dropper with solvent and adjust the dropper to the standby state. Pick the test worms with a brush and place them in a petri dish for later use. The test worms in the petri dish were dripped one by one, and the drug solution was dripped on the pronotum of the armyworm, and 0.5 μL of the drug was dripped on each head. The test wor...

Embodiment 3

[0035] This example presents the preparation of the mixed preparation of Astragalus membranaceus extract and beta-cypermethrin. The specific preparation process is described as follows: take by weighing 5 grams of supercritical carbon dioxide extract of Radix Astragali, 2.5 grams of beta-cypermethrin, 3 grams of calcium dodecylbenzenesulfonate, 10 grams of OP-15, and 3 grams of Tween-80 gram, 10 grams of ethanol, 5 grams of ethylene glycol, stirred at 50°C until homogeneous, slowly added deionized water to make up to 100%, and obtained an aqueous emulsion of Astragalus membranaceus and beta-cypermethrin.

[0036] In August 2017, the inventor conducted a field efficacy test of this formulation embodiment for controlling whitefly in greenhouses in Sunjiaji Town, Shouguang City, Shandong Province in August 2017, and verified the control effect of the formulation on whitefly in greenhouses and the safety of cucumbers.

[0037] The test crop is cucumber, and the control object is w...

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Abstract

The invention discloses plant-derived pesticide synergist. The synergist comprises leguminous plant astragatus complanatus extracts. The astragatus complanatus extracts are prepared from a solvent extraction method or an supercritical fluid extraction method. According to application of the plant-derived pesticide synergist in chemical pesticide synergism, the good synergism is achieved on multiple types of chemical insecticides such as pyrethroid insecticides, organic phosphorous insecticides, carbamate insecticides, neonicotinoid insecticides, pyrrole insecticides, pyrazole insecticides andpyridine insecticides, and the dosage of the chemical pesticide can be lowered in multiples while the same control effect is achieved. In addition, the plant-derived pesticide synergist is safe to people and livestock and environmentally friendly and facilitates comprehensive utilization of astragatus complanatus.

Description

technical field [0001] The invention belongs to the technical field of pesticides, in particular to a botanical pesticide synergist. The present invention also provides the application of the botanical pesticide synergist in chemical pesticide synergy. Background technique [0002] The development of agriculture is inseparable from pesticides, but while making great contributions to agricultural development, pesticides also bring harm to the natural environment. In recent years, due to the abuse of chemical pesticides, the resistance of pests has increased, leading to an increase in the amount and frequency of pesticide use, which has further aggravated environmental pollution and ecological damage, resulting in a vicious circle and seriously endangering human life and health. According to related reports, only about 5% of the pesticides are used in the application process, and most of the pesticides are lost to the surrounding environment such as water and soil, causing en...

Claims

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Application Information

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IPC IPC(8): A01N65/20A01N57/16A01N53/08A01N47/24A01N51/00A01N47/02A01N43/36A01P7/04A61K36/481
CPCA01N43/36A01N47/02A01N47/24A01N51/00A01N53/00A01N57/16A01N65/00A01N65/20A61K36/481A61K2236/33A61K2236/37
Inventor 姬志勤魏少鹏
Owner NORTHWEST A & F UNIV
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