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Application of xanthoxylin as rice planthopper repellent

A technology of prickly ash oil and rice planthopper, applied in animal repellent, application, pest repellant, etc., can solve the problems of unreported application and achieve simple preparation, good repellent effect, and environmental friendliness

Active Publication Date: 2020-05-01
湖北双水双绿生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As an active ingredient in plants such as Zanthoxylum bungeanum, the application of Xanthoxylin in the control of agricultural pests such as rice planthopper has not been reported

Method used

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  • Application of xanthoxylin as rice planthopper repellent
  • Application of xanthoxylin as rice planthopper repellent
  • Application of xanthoxylin as rice planthopper repellent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Determination of the repellent activity of prickly ash oil against brown planthopper and planthopper natural enemy Lygus spp.

[0028] 1.1 Materials and methods

[0029] The tested insects were indoor populations of brown planthopper and green Lygus black-shouldered. Nilaparvata lugens took 3-instar nymphs and 7-day-old female adults to conduct repellent tests, and green Lygus black-shouldered nymphs took 3-instar nymphs and 7-day-old male and female adults to repel respectively. Test; the test compound is Zanthoxylum oleifera, which was purchased from Tokyo Chemical Industry Co., Ltd., Japan. The control repellent is the ethanol extract of Zanthoxylum bungeanum extracted in the laboratory, which is a soluble oily concentrate.

[0030] Bioactivity assay method:

[0031] The repellent activity was measured by stem spray method, see figure 1 . Two rice plants with a height of 30 cm are transplanted into a flower pot with a diameter of 18 cm at a distance of...

Embodiment 2

[0042] Example 2: Determination of the repellent activity of prickly ash oil to white-backed planthopper

[0043] 2.1 Materials and methods

[0044]The tested insects were indoor populations of white-backed planthoppers, and the 3rd-instar nymphs and 7-day-old female adults were used for repellent tests; the test compound was Zanthoxylum oleifera, which was purchased from Tokyo Chemical Industry Co., Ltd., Japan.

[0045] Bioactivity assay method:

[0046] The relevant repellent activity was determined by the stem spray method, and the relevant repellent activity test device is shown in figure 1 . Two rice plants with a height of 30 cm are transplanted into a flower pot with a diameter of 18 cm at a distance of 12 cm, and a transparent cylindrical polyvinyl chloride bucket with openings at both ends is placed on it. Take an appropriate amount of Zanthoxylum oleifera, add acetone to dissolve it in a 1:1 mass ratio, add Tween 20 to make a 20mg / ml Zanthoxylum bungeanum mother ...

Embodiment 3

[0055] Example 3: Determination of the repellent activity of prickly ash oil to SBPH

[0056] 3.1 Materials and methods

[0057] The tested insects were indoor populations of SBPH, and the 3rd-instar nymphs and 7-day-old female adults were used for the repellent test; the test compound Zanthoxylum oleifera was purchased from Tokyo Chemical Industry Co., Ltd., Japan.

[0058] Bioactivity assay method:

[0059] The relevant repellent activity was determined by the stem spray method, and the relevant repellent activity test device is shown in figure 1 . Two rice plants with a height of 30 cm are transplanted into a flower pot with a diameter of 18 cm at a distance of 12 cm, and a transparent cylindrical polyvinyl chloride bucket with openings at both ends is placed on it. Take an appropriate amount of Zanthoxylum oleifera, add acetone to dissolve it in a 1:1 mass ratio, add Tween 20 to make a 20mg / ml Zanthoxylum bungeanum mother solution containing 1wt% Tween 20, and then add ...

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Abstract

The invention discloses an application of xanthoxylin as a rice planthopper repellent. The field use concentration of the xanthoxylin in prevention and treatment of rice planthoppers is 10-1000 ppm ofeffective components. Under a use concentration of 1000 ppm, the xanthoxylin can reach repelling rates of 81.21%, 77.50% and 65.23% to three kinds of female adult rice planthoppers, i.e., brown planthoppers, sogatella furcifera and laodelphax striatellus respectively after the xanthoxylin is sprayed for 24 hours; and the xanthoxylin has a strong repelling effect. The rice planthopper repellent compound, namely the xanthoxylin provided by the invention is an extraction component of natural plants; and a rice planthopper repellent prepared from the xanthoxylin has the advantages of good prevention and treatment effects, simple preparation, greenness, safety, effectiveness, environmental friendliness and the like.

Description

technical field [0001] The invention relates to the field of green prevention and control of pests, in particular to the application of plant-derived prickly ash oil as a repellant for rice planthoppers. Background technique [0002] Rice is the second largest food crop in the world. In the production process of rice, there are harmful insects in each growth stage, resulting in a decline in the yield and quality of rice. In recent years, the major pests that have seriously damaged rice in my country are rice planthoppers, rice leaf rollers, and rice stem borers. These pests have caused 15%-25% yield loss to rice all the year round. There are mainly three kinds of rice planthoppers, namely brown planthopper, white-backed planthopper and brown planthopper, and all three planthoppers belong to the pests of the family Planthopper of the order Homoptera. Rice planthoppers mainly use piercing-sucking mouthparts to pierce and suck rice phloem juice, consume rice nutrients, cause t...

Claims

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Application Information

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IPC IPC(8): A01N35/04A01N25/06A01P17/00
CPCA01N25/06A01N35/04
Inventor 华红霞赵景蔡万伦
Owner 湖北双水双绿生物科技有限公司
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