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Method for preventing and controlling spodoptera frugiperda by using sex pheromone isotropic agent and application

A technology of Spodoptera frugiperda and trapping agent, which is applied in the field of biological control, can solve the problems of ecological environment damage to food quality and safety, affect the survival of natural enemies, and reduce the control effect, and achieve environmental friendliness, long-lasting effect, and simple operation. Effect

Active Publication Date: 2022-03-25
新元果业(山东)集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the emergence of pest resistance, the control effect will be significantly reduced. At the same time, the application of chemical pesticides will also affect the survival of natural enemies, cause a series of problems such as ecological environment damage and food quality and safety, which has become an important obstacle to the sustainable development of agriculture.

Method used

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  • Method for preventing and controlling spodoptera frugiperda by using sex pheromone isotropic agent and application
  • Method for preventing and controlling spodoptera frugiperda by using sex pheromone isotropic agent and application
  • Method for preventing and controlling spodoptera frugiperda by using sex pheromone isotropic agent and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The preparation method of embodiment 1 Spodoptera frugiperda sex pheromone misdirecting agent

[0013] A polyvinyl chloride capillary (PVC) (length 20cm×inner diameter 1.5mm) with sustained release was selected as the carrier. Inject the corn oil solution containing cis-8-tetradecene acetate into the polyvinyl chloride capillary at a dose of 5-15 mg, and add 2% of 2,6-di-tert-butyl-4-methylphenol ( BHT) as a stabilizer, after the end, the two ends of the capillary are heated and sealed to make the sex pheromone tropism lure of Spodoptera frugiperda. Before the test, the lures were placed in a -20°C refrigerator and stored for later use.

Embodiment 2

[0014] Embodiment 2 field biological activity determination test

[0015] Select the lure prepared in Example 1 and hang it in a cornfield where Spodoptera frugiperda is harmful. The trap is selected as a barrel trap, and the trap is 20-30cm higher than the crop. Each of the above lure treatments was set up to repeat 3 times. Table 1 shows the different doses, placement numbers and inhibiting mating rates.

[0016]

[0017]

[0018] The test results show that cis-8-tetradecene acetate has different degrees of inhibitory effects on the mating of Spodoptera frugiperda, and as the dose increases, the inhibition of mating is more obvious. When the dose exceeds 11mg, the number of settings per hectare is When the number is 500, the inhibiting mating rate is greater than 90%. At the same time, when the dose of cis-8-tetradecene acetate was 5 mg, the inhibition rate of mating was higher as the number of cis per hectare increased. Considering the cost, it is recommended that ...

Embodiment 3

[0019] Example 3 Field release rate of Spodoptera frugiperda sex pheromone tropism agent

[0020] Select the lure (5 mg of cis-8-tetradecene acetate) prepared in Example 1, hang it in the field, extract the remaining cis-8-tetradecene acetate in the lure every 15 days, and continue Statistics for 4 months, and quantitative determination by gas chromatography. After 4 months, the content of cis-8-tetradecene acetate was still 1.54mg ( figure 2 ), it shows that the sex pheromone tropism agent of fall armyworm of the present invention has a persistence period greater than 4 months in the field, and can be used for preventing and controlling fall armyworm.

[0021] The sex pheromone tropism agent of the present invention can interfere with the mating communication between the male and female of Spodoptera frugiperda, reduce the mating rate of adults to the greatest extent, reduce the number of reproduction, and play the dual role of interference and trapping. It is an efficient,...

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Abstract

The invention discloses a method for preventing and controlling spodoptera frugiperda by using a sex pheromone isotropic agent, and belongs to the field of biological prevention and control. According to the invention, the artificially synthesized sex pheromone isotropic agent component cis-8-tetradecene acetate is utilized to interfere information transmission between male and female spodoptera exigua, so as to prevent and control the spodoptera exigua. The disruption agent for the spodoptera frugiperda can effectively reduce the mating rate between male and female, and the mating rate can be generally reduced by more than 85%. Meanwhile, the pesticide composition is long in lasting period, high in specificity and environment-friendly, and has important significance on comprehensive treatment of spodoptera frugiperda.

Description

technical field [0001] The invention belongs to the technical field of biological control, and in particular relates to a sex pheromone tropism agent for preventing and controlling Spodoptera frugiperda and its application. Background technique [0002] Spodoptera frugiperda belongs to the family Noctuidae of the order Lepidoptera and is native to tropical and subtropical regions of America. According to data reports, Spodoptera frugiperda is a polyphagous pest, which can harm 353 species of plants in 76 families, including Gramineae, Solanaceae, Brassicaceae, Caryophyllaceae, Compositae, etc., especially gramineous plants, such as corn, tallow, etc. , rice, wheat, etc. Since the outbreak of fall armyworm in Africa in 2016, it has become a major pest in Africa, the Americas, Oceania, and Asia, and has been recognized by the Food and Agriculture Organization of the United Nations as a globally important agricultural migratory pest. It was introduced into my country from the...

Claims

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Application Information

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IPC IPC(8): A01N37/02A01P23/00
CPCA01N37/02
Inventor 宁君王留洋杨超霞骈起薇梅向东折冬梅
Owner 新元果业(山东)集团有限公司