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Method for improving beet armyworm nuclear polyhedrosis virus disseminate ability by using meteorus pulchricornis wesmael

A technology of nuclear polyhedron and beet armyworm, applied in the direction of botanical equipment and methods, applications, animal repellents, etc., can solve problems that have not yet been applied on a large scale, achieve increased pest control effects, and improve control levels , Improve the effect of damage control

Active Publication Date: 2009-09-09
JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Spodopteraexigua nucleopolyhedrovirus (SeNPV) is an important pathogenic microorganism of beet armyworm. It has been developed as a virus insecticide, but due to the defects of the virus itself, it has not been widely used

Method used

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  • Method for improving beet armyworm nuclear polyhedrosis virus disseminate ability by using meteorus pulchricornis wesmael
  • Method for improving beet armyworm nuclear polyhedrosis virus disseminate ability by using meteorus pulchricornis wesmael

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Simultaneous treatment of scutellaria mori and SeNPV

[0021] The synergistic effect of parasitoid wasps on the virus was studied when the wasp and SeNPV acted on the beet armyworm at the same time (Table 1). effect. The effect of parasitoid wasps on the insecticidal activity of 3 kinds of concentrations of viruses is as follows: when the virus concentration is 10 5 At the time of PIB / ml, the insecticidal activity of the mole wasp was significantly improved to the insecticidal activity of the virus, and the lethality of the virus to the third instar beet armyworm could be increased from 25% to 65%; when the virus concentration was 10 6 At the time of PIB / ml, the insecticidal activity of the virus to the insecticidal activity of the virus was also significantly improved, and the lethality of the virus to the pest was increased from 50% to 95%; when the virus concentration was 10 7 When PIB / ml, the lethality rate of the virus increased from 78.3% to 100%, but...

Embodiment 2

[0024] Example 2: Virus treatment after the parasitism of P.

[0025] When the beet armyworm was first parasitized for 1 day and then inoculated with the virus, when the virus concentration was 10 5 At the time of PIB / ml, the insecticidal activity of the virus was shown to be significantly improved by the mottled wasp, which could increase the lethality of the virus to the 3rd instar beet armyworm from 10% to 80%; at a concentration of 10 6 At the time of PIB / ml, the lethality rate of the virus was significantly increased from 25% to 63.3%; when the virus concentration was 10 7 When PIB / ml, the lethality rate of parasitoid wasp increased significantly from 23.3% to 88.3%.

[0026] Table 2 The synergistic effect of SeNPV treatment after the first parasitism of P.

[0027]

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PUM

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Abstract

The invention discloses a method for synergizing the beet armyworm nuclear polyhedrosis virus. Aiming at the defects of slow insecticidal speed and low toxicity of a single natural insect virus, the joint action of insect larvae parasitoids and viruses is used to treat the beet armyworm at the same time with the beet armyworm nucleopolyhedrosis virus, or parasitize first Bee treatment and virus treatment of beet armyworm can significantly increase the infectivity of the virus to pests. Compared with the traditional use of neurotoxic chemical pesticides to increase the effect of virus control, this technology uses the joint action of the larvae parasitic wasp scutellaria and the virus, which not only has outstanding synergistic effect, but also has high safety, which can effectively improve the biological control of pests. Level. After a large number of applications in production, the economic, social and ecological benefits will be very significant.

Description

1. Technical field [0001] The invention belongs to the technical field of pest biological control, and in particular relates to a method for improving the infectivity of beet armyworm nucleopolyhedrosis virus by using the mottled wasp. 2. Technical background [0002] As a kind of biopesticide, insect virus is obviously superior to other insecticides because of its high pathogenicity to target pests, its ability to spread naturally in the pest population for a long time, and it is not easy to produce drug resistance. People pay attention. However, a single virus insecticide often has the disadvantages of slow insecticidal speed and ineffective effect, which greatly restricts its application in production. [0003] Aiming at the defects of a single natural insecticidal resource, researchers have been looking for various ways to overcome their shortcomings for many years. However, the main research focuses on how to use genetic engineering or chemical methods to improve the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N63/00
Inventor 郭慧芳方继朝王节萍钟万芳刘宝生谢霖
Owner JIANGSU ACAD OF AGRI SCI
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