Pesticide composite of tea saponin and

An insecticidal composition and a technology for tea saponin, which are applied in the directions of insecticides, biocides, animal repellents, etc., can solve the problems of no technical reports on technical solutions and high cost of azadirachtin use.

Inactive Publication Date: 2010-12-29
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of using azadirachtin alone is relatively high
[0006] At present, there is no technical report on the technical scheme for the combined use of tea saponin and azadirachtin

Method used

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  • Pesticide composite of tea saponin and
  • Pesticide composite of tea saponin and
  • Pesticide composite of tea saponin and

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Example 1 Preparation of 3% tea saponin · azadirachtin microemulsion and its indoor toxicity

[0074] The tea saponin is the crude extract of tea saponin, pure tea saponin or a preparation containing tea saponin; the tea saponin and azadirachtin are existing commercially available products or are extracted by conventional methods .

[0075] The weight ratio of each component is: tea saponin: 1.5%, azadirachtin: 1.5%, methanol: 10%, cyclohexane: 9%, ethyl acetate: 8%, cyclohexanone: 25%, agricultural Milk 500: 4%, Nongru 700: 8%, AEO-7: 10%, GP330: 0.5%, glycerol: 0.5%, the balance water. Dissolving the tea saponin and azadirachtin in methanol, cyclohexane and ethyl acetate according to the ratio, adding other components after mixing to prepare the microemulsion.

[0076] Indoor toxicity and its compounding synergistic effect refer to conventional techniques, and the following method is used in this embodiment: fresh cabbage leaves collected from the net room without a...

Embodiment 2

[0087] Example 2 Preparation of 5% tea saponin · azadirachtin EC and its indoor toxicity

[0088]The weight ratio of each component is: 4.5% of tea saponin; 0.5% of azadirachtin; 10% of surfactant Nongru 500, 10% of Nongru 700; 20% of organic solvent cyclohexane, 10% of ethyl acetate %, DMF10%, dichloromethane 10%; co-solvent methanol 5%; stabilizer castor oil 5%; anti-photolysis agent epoxidized soybean oil 5%; penetrant lauroazepam 10%. Put each component into the preparation kettle and mix thoroughly.

[0089] Refer to Example 1 for indoor toxicity determination. 5% tea saponin · azadirachtin emulsifiable concentrate prepared in the present embodiment is shown in Table 2 to the indoor toxicity test result of 2 instar diamondback moth larvae, the LC of formula 72h of the present invention 50 It is 9.54mg / L, and its co-toxicity coefficient reaches 4225, and the synergistic effect is obvious.

[0090] Table 2 indoor toxicity test result (LC of 72h) to 2 instar diamondback m...

Embodiment 3

[0092] Example 3 Preparation of 5.5% tea saponin · azadirachtin EC and its indoor toxicity test

[0093] The weight ratio of each component is: 0.5% of tea saponin; 5.0% of azadirachtin; 10% of surfactant Nongru 500, 10% of Nongru 700; 20% of organic solvent cyclohexane, 10% of ethyl acetate %, DMF 10%, dichloromethane 10%; co-solvent methanol 4.5%; stabilizer castor oil 5%; anti-photolysis agent epoxidized soybean oil 5%; penetrant lauroazepam 10%. Put each component into the preparation kettle and mix thoroughly.

[0094] Refer to Example 1 for indoor toxicity determination. 5.5% tea saponin · azadirachtin emulsifiable concentrate prepared in the present embodiment is shown in Table 2 to the indoor toxicity test result of 2 instar larvae of Spodoptera litura, the LC of formula 72h of the present invention 50 It is 1.16mg / L, and its co-toxicity coefficient reaches 2595, and the synergistic effect is obvious.

[0095] Table 2 indoor toxicity test result (LC of 72h) to 2 ins...

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Abstract

The invention invention discloses a pesticide composite of tea saponin and azadirachtin, which comprises the following components in percent by weight: 0.10-50 percent of saponin, 0.01-30 percent of azadirachtin and 20-95 percent of assistant. The compound pesticide preparation can be prepared into emulsion, wettable powder, microemulsion, suspending agent, suspending emulsion or emulsion in water. The saponin and the azadirachtin are compounded, therefore, the pesticide composite has remarkable synergism and obviously enhanced pesticide activity compared with the single preparation, therebyreducing the investment of manpower and material resources during controlling insects, improving the production benefit, and remarkably lowering the cost under the premise of ensuring the pesticide effect. The invention has the advantages of multiple formulations, simple preparation method and very high popularization value.

Description

technical field [0001] The invention relates to an agricultural insecticide, in particular to an insecticidal composition of tea saponin and azadirachtin. Background technique [0002] Due to the long-term and large-scale irrational use of chemical pesticides, as well as the inherent shortcomings of some pesticides, the "3R" problem has been caused by pests. Therefore, looking for biologically active substances and researching and developing new biopesticides based on natural products have attracted much attention at home and abroad, among which botanical pesticides are the most eye-catching category. The development of botanical pesticides, the mixing of botanical pesticides and chemical pesticides, and the mixing of botanical pesticides and microbial pesticides are the frontiers and hotspots of pesticide research in the world. [0003] Tea saponin (Tea saponin) is a plant insecticide extracted from the seeds of Camellia plants such as tea seed cake and tea cake after tea ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N43/16A01P7/04
Inventor 胡美英郝卫宁纪德群柳晓磊
Owner SOUTH CHINA AGRI UNIV
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