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Spodoptera frugiperda sex attractant as well as preparation method and application thereof

A technology of Spodoptera frugiperda and lure, applied in the direction of botanical equipment and methods, application, and attractant pests, can solve the problems of limited effective use period in the field, reduce the decomposition rate of sex pheromones, etc., and achieve the reduction of direct contact , Improve the slow-release time and prolong the effect of using time

Pending Publication Date: 2022-05-10
INST OF PLANT PROTECTION FAAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These slow-release materials reduce the decomposition rate of sex pheromones in the field to a certain extent, and can control the release dose of sex pheromones in an appropriate range within a certain period of time, but their effective use in the field is still limited.

Method used

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  • Spodoptera frugiperda sex attractant as well as preparation method and application thereof
  • Spodoptera frugiperda sex attractant as well as preparation method and application thereof
  • Spodoptera frugiperda sex attractant as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Preparation of sex pheromones of fall armyworm

[0023] Spodoptera frugiperda sex pheromone (Z)-9-tetradecen-1-ol acetate, (Z)-7-dodecen-1-ol acetate according to the mass percentage of 96.5:3.5 Weigh a total amount of 30mg of the sex pheromone mixed solution of Spodoptera frugiperda, and dilute to 1mL with dichloromethane;

[0024] 2) Preparation of sex lure for Spodoptera frugiperda

[0025] Such as figure 1 As shown, take 15mL, dissolve 0.1% chitosan in 1% acetic acid, adjust the pH to 5 with sodium hydroxide solution, take the mixed solution prepared in 1) and add it under stirring, and then add 6mL, 0.1% three Add sodium polyphosphate dropwise to the above mixed solution, continue to stir at room temperature for 2 hours, and then centrifuge at 14000g for 30 minutes at 4°C to obtain the sex attractant of Spodoptera frugiperda;

[0026] 3) Preparation of sex lures for Spodoptera frugiperda

[0027] Mix the sex lure of fall armyworm obtained in step 2) with 10m...

Embodiment 2

[0029] The difference between this example and Example 1 is that: the sex lure solution of Spodoptera frugiperda obtained in step 2 was directly put into a centrifuge tube, and the other things were the same, and the sex lure core of Spodoptera frugiperda was obtained, code A2.

Embodiment 3

[0031] The difference between this embodiment and embodiment 1 is:

[0032] 1) Two different components of the sex pheromone of Spodoptera frugiperda were prepared according to the mass percentage of 96.5:3.5, the mass of the mixed solution was 30 mg, diluted with n-hexane to 1 mL, and the mixed solution of sex pheromone of Spodoptera frugiperda was obtained;

[0033] 2) Mix the sex pheromone mixture of Spodoptera frugiperda in step 1) with 30mL, 10% agar, and then quickly cool down to obtain a gelatinous solid sex attractant, and place it in a centrifuge tube to obtain Spodoptera frugiperda Moth lure lure, code A3.

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Abstract

The invention relates to the technical field of biological control of insect pests, in particular to a spodoptera frugiperda sex attractant as well as a preparation method and application thereof. The sex attractant for the spodoptera frugiperda comprises chitosan, sodium tripolyphosphate, sex pheromone of the spodoptera frugiperda and agar, the sex attractant is formed by low-viscosity chitosan, a cross-linking agent sodium tripolyphosphate and sex pheromone through an ionic cross-linking method, and then agar is added to obtain the gelatinous solid-state spodoptera frugiperda sex attractant, so that the sex attractant has good slow-release performance, and the continuous release time can reach more than 3 months; meanwhile, non-toxic and biodegradable chitosan is used for loading the sex pheromone of the spodoptera frugiperda, on one hand, direct contact between the sex pheromone of the spodoptera frugiperda and air can be reduced, volatilization is reduced, and the slow release time of the sex attractant of the spodoptera frugiperda is prolonged; and on the other hand, the chitosan serving as a carrier of the nanoparticles has a certain slow release function, so that the service time of the spodoptera frugiperda sex attractant can be prolonged, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of insect pest biological control, in particular to a sex lure for Spodoptera frugiperda and its preparation method and application. Background technique [0002] Spodoptera frugiperda belongs to the genus Spodoptera frugiperda of the family Noctuidae of the order Lepidoptera, and is a polyphagous pest. It can damage some grains such as corn, rice, sorghum, wheat, etc., causing serious economic losses. Spodoptera frugiperda has a strong ability to migrate, and adults can fly more than 100 kilometers a night. By the beginning of 2019, it has migrated to my country. It has been found that 27 provinces have been invaded and damaged by falloptidus frugiperda. [0003] There are many ways to control fall armyworm. At present, insecticides and genetically modified crops are largely relied on to control insect pests. However, due to the emergence of pesticide resistance, toxicity, and resistance to genetically mod...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N25/18A01N37/02A01P19/00
CPCA01N25/04A01N25/18A01N37/02Y02A50/30
Inventor 陈秀琴邱良妙刘其全何玉仙
Owner INST OF PLANT PROTECTION FAAS
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