Synergistic method of insect growth regulator and nucleopolyhedron virus

A nuclear polyhedrosis virus and growth regulator technology, applied in plant growth regulators, chemicals for biological control, biocides, etc., can solve the problem of reducing the level of biological control of pests, slow action of insect viruses, and death of pests and other issues to achieve the effect of increasing the effect of harm control, improving the effect of harm control and reducing environmental pollution

Inactive Publication Date: 2007-01-03
JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in production practice, most of the mixed use of insect viruses and chemical insecticides is just arbitrarily mixing viruses with fast-acting neurotoxic insecticides. and didn't work
In mixed use, chemical insecticides do not really act as a synergist to improve or activate the insecticidal effect of insect viruses, and even inhibit the control effect of insect viruses, reducing the level of pest biological control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: Chlorfluazuron and SlNPV mixed use

[0026] Indoor bioassays showed (Table 3) that the mixed use of chlorfluazuron and SlNPV had a significant synergistic effect. The co-toxicity coefficients of the ratios A, B, C, D and E were 137, 162, 182, 124 and 157, respectively, all showing synergistic effects.

[0027] Chlorfluazuron: SlNPV

Virulence regression equation

LC 50 (mg / L)

r value

toxicity index

co-toxicity coefficient

3:1(A)

2:1 (B)

1:1(C)

1:2(D)

1:3(E)

SlNPV

Chlorfluazuron

Y=2.5039+0.9028X

Y=1.9627+1.1619X

Y=1.9860+1.2350X

Y=2.4351+1.0217X

Y=2.3153+1.1342X

Y=2.3290+1.0855X

Y=-3.0120+2.4419X

581.74

411.32

275.76

323.82

232.91

288.84

1909.90

0.9667

0.9495

0.9588

0.9614

0.9605

0.9852

0.9465

3.28

4.64

6.93

5.90

8.20

6.61

1.00

137

162

182

124

157

...

Embodiment 2

[0033] Embodiment 2: mixed use of chlorfluazuron and AcNPV

[0034] Indoor bioassays on beet armyworm showed (Table 6) that the mixed use of chlorfluazuron and AcNPV also had a synergistic effect. The co-toxicity coefficients of the ratios A, B, C, D and E were 127, 155, 153, 109 and 130, respectively, all showing synergistic effects.

[0035] Chlorfluazuron: AcNPV

[0036]From the results of field experiments in Nanjing and Rugao, it can be seen that the combination of AcNPV and chlorfluazuron has a good control effect on beet armyworm. The field test in 2002 showed (table 7), 3 days after the medicine, mu uses virus single agent 4 * 10 9 The control effect of PIB on beet armyworm was 18%, while AcNPV 10 9 PIB plus chlorfluazuron 0.4 g, AcNPV 2×10 9 PIB plus chlorfluazuron 0.6 g, AcNPV 4×10 9 The control effects of PIB plus chlorfluazuron 0.8 g were 30.8%, 49.5% and 50.8%, respectively, which were significantly higher than the control effects of a single agent o...

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PUM

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Abstract

The present invention discloses the synergistic method for nucleopolyhedron virus. For sake of overcoming the demerits of single insect virus, such as slow pesticidal speed, low toxicity, etc, insect growth regulator chlorfluazuron is made to cooperate with insect virus so as to raise the pest controlling effect obviously. Compared with the traditional method of raising the pest controlling effect of virus with neurotoxic pesticide, the present invention has the advantages of high synergistic effect, high safety and raised biological control level of pests.

Description

1. Technical field [0001] The invention belongs to the technical field of pest biological control, and in particular relates to a synergistic method for using the insect growth regulator hexazuron and Spodoptera litura nuclear polyhedrosis virus or Autographa californica nuclear polyhedrosis virus. 2. Technical Background [0002] As a class of biological insecticides, insect viruses are obviously superior to other insecticides due to their high pathogenicity to target pests, strong specialization, natural transmission and long-term prevalence in pest populations, and less resistance to insecticides. , has attracted people's attention for a long time. However, a single virus insecticide often has disadvantages such as slow insecticidal speed and unstable effect, which restricts its application in production. Mixing insect viruses with appropriate low-toxicity and low-residue chemical insecticides is one of the important ways to solve the above problems. On the one hand, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N63/00A01P23/00A01N47/36
Inventor 郭慧芳王节萍钟万芳刘宝生方继朝
Owner JIANGSU ACAD OF AGRI SCI
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