Attractant composition for preventing and controlling Scotogramma trifolii Rottemberg

A technology of Spodoptera solani and a composition, applied in the field of biological control, can solve the problems of inconsistent volatilization time, unstable trapping effect and the like, and achieve the effects of reducing the reproduction rate and reducing the dosage

Active Publication Date: 2017-12-15
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

Spodoptera sex pheromone has the effect of attracting male insects, but due to the difference in the properties of different components, the inconsistent volatilization time makes its trapping effect in the field unstable

Method used

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  • Attractant composition for preventing and controlling Scotogramma trifolii Rottemberg
  • Attractant composition for preventing and controlling Scotogramma trifolii Rottemberg
  • Attractant composition for preventing and controlling Scotogramma trifolii Rottemberg

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation of embodiment 1 cis-11-hexadecenyl-2-monochloroacetate

[0027] The compound in the present invention can be synthesized by the route described below, the synthetic route of cis-11-hexadecenyl-2-monochloroacetate see Figure 11 .

[0028] Dissolve 2.00g (8.32mmol) cis-11-hexadecenol in 30mL of anhydrous dichloromethane, add 7.30×10 -2 g of 4-dimethylaminopyridine in an ice bath to keep the reaction temperature at about 0°C, and gradually add a dichloromethane solution of chloroacetic anhydride dropwise. After completion, extract with saturated brine and anhydrous magnesium sulfate to remove impurities and excess acid anhydride, and finally remove the solvent by rotary evaporation under reduced pressure, and obtain 2.13 g (6.74 mmol) of a light yellow oil with a yield of 80.9% through chromatography column separation.

Embodiment 2

[0029] Example 2 Preparation of cis-11-hexadecenyl-2,2-difluoroacetate

[0030] The preparation method of cis-11-hexadecenyl-2,2-difluoroacetate is similar to Example 1, only need to change the chloroacetic anhydride in Example 1 into difluoroacetic anhydride, and according to Example Synthesize according to the steps in 1 to obtain 2.17 g (6.81 mmol) of a light yellow oil with a yield of 81.9%.

Embodiment 3

[0031] Embodiment 3 field bioactivity assay test

[0032] Lure preparation:

[0033] (1) The lure carrier adopts a cylindrical green concave rubber plug with a height of 14mm, an inner diameter of the opening end of 8mm, a wall thickness of the opening end of 1mm, and an opening depth of 5mm.

[0034] (2) The sex pheromone components of Spodoptera are cis-11-hexadecenyl acetate, cis-11-hexadecenyl alcohol and hexadecene acetate in a mass ratio of 83:16:1 Mix and dilute with n-hexane to a solution with a concentration of 1 μg / μL.

[0035] (3) Pipette 100 μL (1 μg / μL) of the above-mentioned Spodoptera sex pheromone solution and add it to the bottom of the rubber head, and the Spodoptera sex pheromone solution will penetrate into the inside of the rubber along with the solvent (n-hexane). After the solvent (n-hexane) evaporated, 100 μg of Spodoptera sex pheromone was obtained.

[0036] (4) cis-11-hexadecenyl-2-monochloroacetate, cis-11-hexadecenyl-2-monobromoacetate, cis-11-he...

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Abstract

The invention discloses an attractant composition for preventing and controlling Scotogramma trifolii Rottemberg. The attractant composition comprises a Scotogramma trifolii Rottemberg sex pheromone component and halogenated pheromone analogues thereof, and the halogenated pheromone analogues have a general formula ROCOCnHaXb. The attractant composition disclosed by the invention can trap and kill Scotogramma trifolii Rottemberg male pests more effectively, reduces a breeding rate, and gradually controls extinction of pest populations, so that a purpose for preventing and controlling pests is achieved. The composition has a small usage amount, is friendly to environment, can be accurately applied to forecast pest conditions, trap a plurality of pests and disturb copulation, and has important meanings on comprehensive treatment of the Scotogramma trifolii Rottemberg.

Description

technical field [0001] The invention belongs to the technical field of biological control, in particular to an attractant composition for preventing and controlling Spodoptera moth. Background technique [0002] Spodoptera moth (Scotogramma trifolii Rottemberg), belonging to the order Lepidoptera and Noctuidae, is an agricultural pest that has caused local outbreaks in farming and pastoral areas in northern my country, and its damage has gradually increased in recent years. The larvae have the characteristics of concealment, explosiveness, and migration hazards. The host crops include cotton, wheat, corn, etc. There are more than 40 kinds of 8 families, including more than 20 kinds of crops and more than 20 kinds of weeds. In Xinjiang, Tibet, Qinghai, Hebei and other provinces and autonomous regions are distributed. At present, the methods for its prevention and control mainly include spraying chemical agents and light trapping. Long-term use of chemical agents to control ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/06A01N25/18A01P7/04A01P19/00C07C69/63C07C67/08A01M1/02A01M1/10
CPCA01M1/02A01M1/106A01N25/18A01N37/06C07B2200/09C07C67/08C07C69/63
Inventor 张云慧翁爱珍张智祁俊峰王安佳王留洋梅向东折冬梅宁君
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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