Natural plant pest killing and sterilizing agent and its preparing method and use

A technology of natural plants and fungicides, applied in the field of plant pesticides, can solve the problems of pest resistance, residual toxic environment, high toxicity, etc., and achieve the effects of wide distribution, mature technology and large storage.

Inactive Publication Date: 2006-03-22
广东省中药研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the extensive use of chemical pesticides, various disadvantages have been brought to human beings, such as the generation of pest resistance, residual toxicity and environmental pollution.
Currently, many highly toxic, high residue, persistent pesticides have been banned

Method used

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  • Natural plant pest killing and sterilizing agent and its preparing method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Antifeedant and repellent effects of patchouli essential oil on Trichosanthes alba and Lychee leaf roller

[0019] 1.1 Essential oil for testing: Patchouli essential oil is self-provided by this research institute, and each milliliter contains about 50g of crude drug.

[0020] 1.2 Test insects

[0021] Sandalwood butterfly (Delias aglaia L.): The newly hatched sandalwood larvae were collected from the specimen garden of our institute, put into large plastic boxes, and fed with young sandalwood leaves. When the larvae reached the fifth instar, they were try.

[0022] Homona coffearia Nietner: The newly hatched larvae of the litchi brown-banded leaf tortrix (Homona coffearia Nietner) were collected from the Zengcheng orchard, put into large plastic boxes, and fed with young litchi leaves. When the larvae reached the fifth instar, they were fed try.

[0023] 1.3 Determination of antifeedant effect

[0024] Drug preparation: using acetone as solvent, the patchouli essen...

Embodiment 2

[0043] Antifeedant effect of patchouli essential oil on Spodoptera litura

[0044] 1.1 Essential oil for testing: Patchouli essential oil is self-provided by this research institute, and each milliliter contains about 50g of crude drug.

[0045] 1.2 Test insects

[0046] Spodoptera litura Fab.: The egg masses of Spodoptera litura Fab. were collected from the field and placed in a moisturizing petri dish. After the eggs hatched into larvae, they were transferred to a large glass tank and fed with cassava leaves. When the larvae grew to At the 3rd instar, neat and consistent larvae were picked for testing.

[0047] 1.3 Test method

[0048] Drug preparation: using acetone as solvent, the patchouli essential oil was diluted to five gradient concentrations of 2.5mg / L, 5mg / L, 10mg / L, 20mg / L, and 40mg / L respectively.

[0049] The determination of antifeedant activity for selective feeding and antifeedant activity for non-selective feeding are the same as in Example 1.

[0050] 1.4 ...

Embodiment 3

[0058] Insecticidal effect of patchouli ketone and patchouli essential oil

[0059] 1.1 Test agent: Patchouli essential oil is self-extracted by this research institute, and each mL contains about 50 g of crude drug; patchouli ketone is separated and prepared from this essential oil by our research laboratory, with a yield of 0.25% and a purity of more than 98.5%. Using acetone as a solvent, dilute patchouli essential oil to five gradient concentrations of 2.5mg / L, 5mg / L, 10mg / L, 20mg / L, and 40mg / L; dilute patchouli ketone to 1mg / L L, 2mg / L, 4mg / L, 8mg / L, 10mg / L five gradient concentrations.

[0060] 1.2 Test insects

[0061] Cabbage butterfly (Preris rapae L.): The pupae and advanced larvae of the cabbage butterfly (Preris rapae L.) were collected from the teaching and practice area of ​​the specimen garden of our institute. In the insect cage, put potted kale in the cage, and soak cotton in the cage with 10% honey solution to supplement nutrition for the adults, let the ad...

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Abstract

The present invention belongs to the field of botanical pesticide. The botanical pest killing germicide contains patchoulenone in 0.1-10 mg / L or patchoulenic oil in 0.3-40 mg / L as the active component. The preparation process includes dissolving patchoulenone in water to obtain water solution; or adding patchoulenic oil into water and adding proper amount of surfactant via stirring to obtain emulsion. The present invention is used in preventing and controlling diseases and pests of crop, and has the advantages of rich resource, low cost, high activity on harmful organism, high safety on non-target organism, low residue and easy degradation.

Description

technical field [0001] The invention relates to a plant pesticide, in particular to a natural plant insecticide and fungicide used for the control of crop diseases and insect pests. The invention also relates to a preparation method and agricultural application of the insecticide and fungicide. Background technique [0002] Pesticides are essential and important materials to ensure good agricultural harvests, improve human food supply, and improve human living standards. For this reason, many countries in the world have devoted considerable manpower and material resources to the development of new pesticides, especially some world-wide large chemical companies in developed countries, even more at all costs to research and develop new pesticides. Today, the development of a new chemical pesticide often costs 70 to 80 million US dollars, and it takes about 10 years to screen tens of thousands of compounds before a new pesticide with commercial value can be obtained. However, ...

Claims

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Application Information

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IPC IPC(8): A01N65/00A01N65/22
Inventor 严振曾庆钱莫小路王玉生汪小根
Owner 广东省中药研究所
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