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Sex pheromone composition for preventing and treating Melicleptria scutosa

A technology of pheromones and pheromones, which is applied in the field of sex pheromone compositions for preventing and controlling Spodoptera spp., can solve the problems of killing natural enemies, environmental pollution, and high pesticide residues, and achieve slow release rate, environmental friendliness, and special strong effect

Inactive Publication Date: 2020-12-04
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the domestic control of Spodoptera broad-legged moth mainly relies on chemical pesticides, but with the incorrect use of chemical pesticides, it will not only kill natural enemies, but also cause problems such as excessive pesticide residues, environmental pollution, and insecticide resistance.

Method used

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  • Sex pheromone composition for preventing and treating Melicleptria scutosa
  • Sex pheromone composition for preventing and treating Melicleptria scutosa
  • Sex pheromone composition for preventing and treating Melicleptria scutosa

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Preparation of cis-7-dodecene-2-chloro-2,2-difluoroacetate

[0023] The structural diagram of the compound cis-7-dodecene-2-chloro-2,2-difluoroacetate in the present invention is as follows figure 1 As shown, its synthetic route is as image 3 shown.

[0024] Dissolve 0.5g (2.71mmol) of cis-7-dodecenol in 20mL of anhydrous dichloromethane, add 0.04g of 4-dimethylaminopyridine, and then add 0.31g of triethylamine as an acid-binding agent , ice bath, keep the reaction temperature at about -18°C, and gradually add 0.79g (3.53mmol) of 2-chloro-2,2-difluoroacetic anhydride solution dropwise. The reaction process is monitored by TLC. After the raw materials are no longer reduced, add A small amount of deionized water was used to quench the reaction. Wash with saturated saline solution (10mLx3), dry over anhydrous magnesium sulfate for 40min, filter and rotary evaporate under reduced pressure. Silica gel column chromatography (ethyl acetate:petroleum ether=1:20) ...

Embodiment 2

[0025] Embodiment 2 cis-9-tetradecene-N, the preparation of N-dimethylcarbamate

[0026] The structure of cis-9-tetradecene-N,N-dimethylcarbamate is shown in figure 2 As shown, its preparation method is similar to Example 1, only need to replace the 2-chloro-2,2-difluoroacetic anhydride solution in Example 1 with dimethylcarbamoyl chloride, and synthesize according to the steps in Example 1 A light yellow oily substance can be obtained as the product.

Embodiment 3

[0027] Embodiment 3 field bioactivity assay test

[0028] Put the lure core prepared with the sex-attractant composition of Spodoptera scutellaria into a box-type trap, and then place the trap on a plot where more Spodoptera scutellaria damage may occur. In order to ensure the release effect, 0-2200 μg of the sex-attractant composition of Spodoptera chinensis is placed in every 1 mL of n-hexane rubber lure core. In order to further illustrate the feasibility of the present embodiment, 15 specific formulas are provided in table 1:

[0029] Table 1

[0030]

[0031] Select plots that may cause more damage by Spodoptera spp., with an area of ​​more than 20 mu. Set traps for each formula at a height of about 100cm from the ground, and a distance between traps of about 10m. Place the above-mentioned traps containing Spodoptera sp. For traps of pheromone compositions, 3 replicates were set up for each treatment. The number of trapped Spodoptera moths was investigated every two...

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PUM

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Abstract

The invention discloses a sex pheromone composition for prodenia litura, and belongs to the technical field of biological control. The sex pheromone composition comprises a spodoptera litura sex pheromone and a spodoptera litura sex pheromone analogue. The sex pheromone component is composed of cis-7-dodecene-acetate, cis-11-hexadecene-1-alcohol and cis-9-tetradecene-3-methyl 2-crotonate, and thesex pheromone analogue is composed of cis-7-dodecene-2-chloro-2, 2-difluoroacetate and cis-9-tetradecene-N, N-dimethylcarbamate. The mass ratio of the Spodoptera litura sex pheromone to the sex pheromone analogue is (0.3-3): (0.01-1). The sex pheromone composition disclosed by the invention can be used for more effectively trapping and killing male Spodoptera litura, reducing the mating frequencyand reducing the propagation rate, not only is low in dosage and environment-friendly, but also can be accurately applied to insect condition forecasting, mass trapping and mating interference, and has important significance for comprehensive treatment of Spodoptera litura.

Description

technical field [0001] The invention belongs to the technical field of biological control, and in particular relates to a sex pheromone composition used for preventing and controlling Spodoptera broad-legged moth. Background technique [0002] Schinia scutosa belongs to Lepidoptera, Noctuidae, and is an important agricultural pest. Widely distributed in eastern, southern, and central Asia, Europe, and northern America. In my country, it is mainly distributed in Hebei, Shandong, Liaoning, Inner Mongolia, Jiangsu and other places. The host plants of Spodoptera broad-legged moth include leguminous plants, Artemisia genus, and Chenopodium genus, and they mainly cause damage through larval feeding. Like other herbivorous Noctuidae insects, the insect is gluttonous and will cause great damage to crops. In northern Xinjiang, the degree of damage of Spodoptera far exceeds that of cotton bollworm. In 2017, Spodoptera spp. was in Qinghai to Chenopodium cause major economic losses. ...

Claims

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Application Information

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IPC IPC(8): A01N25/18A01N47/12A01N37/02A01N49/00A01N31/02A01P19/00A01M1/02A01M1/10
CPCA01M1/02A01M1/106A01N25/18A01N31/02A01N37/02A01N47/12A01N49/00
Inventor 梅向东李慧王留洋鞠方成马好运翁爱珍折冬梅宁君
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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