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Sex pheromone composition for preventing and controlling argyrogramma agnata and application thereof

A technology of silver print moth and pheromone, applied in the field of biological control, can solve environmental pollution and other problems, achieve the effect of reducing reproduction rate, reducing mating frequency, and strong specificity

Inactive Publication Date: 2019-01-18
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Light trapping and killing can be used, but due to environmental conditions, the use of light trapping has limitations
Traditionally, chemical control is mostly used, and a large amount of chemical pesticides will not only make the silver-leaved armyworm resistant to pesticides, but also cause serious pollution to the environment

Method used

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  • Sex pheromone composition for preventing and controlling argyrogramma agnata and application thereof
  • Sex pheromone composition for preventing and controlling argyrogramma agnata and application thereof
  • Sex pheromone composition for preventing and controlling argyrogramma agnata and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1 The preparation of cis-7-dodecenyl-2-monobromoacetate:

[0023] The compound in the present invention can be synthesized by the route described below, and the synthetic route of cis-7-dodecenyl-2-monobromoacetate is shown in Figure 4 .

[0024] Dissolve 0.5g (0.002mol) of cis-7-dodecenol in 20mL of anhydrous dichloromethane, add 0.04g of 4-dimethylaminopyridine, then add 0.31g of TEA, ice-bath, and react The temperature is maintained at about 0°C, and bromoacetic anhydride dichloromethane solution is gradually added dropwise. After the dropwise addition, the ice bath lasts for a period of time, and thin layer chromatography is used to analyze whether the reaction is complete. After the reaction is complete, use saturated saline and anhydrous Sodium sulfate extraction was used to remove impurities and excess acid anhydride, and finally the solvent was removed by rotary evaporation under reduced pressure, and the product was obtained as a light yellow oily ...

Embodiment 2

[0025] Example 2 Preparation of cis-7-dodecenyl-2,2,2 trifluoroacetate:

[0026] The preparation method of cis-7-dodecenyl-2,2,2 trifluoroacetic acid ester is similar to embodiment 1, only need to change the bromoacetic anhydride in embodiment 1 into trifluoroacetic anhydride, according to embodiment The step in 1 can be synthesized to obtain a light yellow oily substance as the product.

Embodiment 3

[0027] Embodiment 3 field bioactivity assay test

[0028] Put the lure core prepared with the silver-leaved armyworm sex attractant composition into a box-type trap, and then place the trap in a plot where the occurrence of silver-leaved armyworm is relatively serious. In order to ensure the release effect, 100-1500 μg of the silver print moth sex attractant composition is placed in every 1 mL of the rubber lure core. In order to further illustrate the feasibility of the present embodiment, the specific formula is provided in table 1

[0029] Table 1

[0030]

[0031] Select plots with serious occurrence of silver print moth, with an area of ​​more than 20 mu. Each formula sets traps at a height of about 150cm from the ground, and the distance between traps is about 15m. Place the above-mentioned sex pheromone containing silver print Combination of traps, each treatment set up 3 replicates. The number of silver-leaved moths trapped was investigated every two days after p...

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PUM

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Abstract

The invention discloses a sex pheromone composition for preventing and controlling argyrogramma agnata, and application thereof, and belongs to the field of biological prevention and control. The massratio of argyrogramma agnate sex pheromone to a sex pheromone halogenated analogue is 1:(0.4-0.8). The sex pheromone is composed of cis-7-dodecenyl acetate, cis-11-hexadecene acetate and cis-11-hexadecene aldehyde. The sex pheromone halogenated analogue is selected from one or more of cis-7-dodecenyl-2-mono-bromoacetic acid ester, cis-7-dodecenyl-2,2,2-trifluoroacetic acid ester, and cis-7-dodecenyl-2,2,3,3,3-pentafluoropropionic acid ester. The sex pheromone composition can more effectively trap and kill the male argyrogramma agnata, the mating frequency is decreased, the propagation rate isdecreased, and the pest population is gradually controlled to be extinct, so that the purpose of pest prevention and control is achieved.

Description

technical field [0001] The invention belongs to the technical field of biological control, and in particular relates to a sex pheromone composition and application for preventing and controlling the silver-leaved armyworm. Background technique [0002] Argyrogramma agnata (Staudinger) belongs to Lepidoptera, Noctuidae, and is an important agricultural migratory pest. It mainly hosts cruciferous vegetables such as rapeseed, cabbage, cauliflower, cabbage, and radish, as well as legume crops, kale, eggplant, and other crops. The larvae feed on the leaves of plants, causing holes or nicks or even death in the leaves, and excrete feces to pollute the vegetable plants, seriously affecting the quality and yield of crops, and causing serious economic losses. Silver print moth is mainly distributed in the main soybean producing areas in my country. Among them, the Huanghuai River Basin and the Yangtze River Basin are severely damaged. There are 1 to 5 generations a year, and they su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/02A01N35/02A01P19/00A01M1/02
CPCA01M1/02A01N35/02A01N37/02
Inventor 王留洋梅向东翁爱珍马好运宁君张智折冬梅
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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