A kind of microbial insecticide composition for controlling red fire ants

A technology of microbial insecticides and compositions, applied in the directions of insecticides, biocides, animal repellents, etc., can solve the reports that the application of Beauveria bassiana and thiacloprid insecticides has not been seen, and the pests are easy to produce resistance. In order to achieve the effect of delaying insecticide resistance, improving insecticidal effect and improving control effect

Active Publication Date: 2017-10-17
INST OF ZOOLOGY GUANGDONG ACAD OF SCI
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Insecticides containing one active ingredient often have defects in varying degrees in the control of red fire ants that make nests in the soil: when chemical pesticides are used continuously, pests are prone to develop resistance, and when using more toxic chemical pesticides or applying Improper methods will cause red fire ants to move their nests, and even the control agents may cause serious pollution to soil and groundwater resources
In addition, the rate of controlling RIFA by applying the pathogenic microorganism Beauveria bassiana alone is relatively slow.
[0005] So far, there is no report on the application of insecticides combining Beauveria bassiana and thiacloprid in the control of red imported fire ants

Method used

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  • A kind of microbial insecticide composition for controlling red fire ants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: Indoor toxicity test of the compound main agent of Beauveria bassiana and thiacloprid on workers of RIFA

[0014] During the indoor toxicity test, a total of 1.5 g of Beauveria bassiana powder and thiacloprid were weighed (the mass ratios of Beauveria bassiana powder and thiacloprid were respectively: 1:0, 8:2, 6:4, 5:5, 4:6, 1:9 and 0:1, the Beauveria bassiana powder used contains 20 billion spores / g of Beauveria bassiana, the content of the thiacloprid original drug is 95% by mass, the actual preparation calculation is the same as that of Beauveria bassiana When the mass ratio is calculated based on pure thiacloprid), the wetting agent pulls apart powder 0.4g, the dispersant sodium lignosulfonate 0.9g, the disintegrating agent calcium chloride 0.25g, the stabilizer disodium hydrogen phosphate 0.1g, the binder Sodium polyacrylate 0.25g, carrier diatomaceous earth 1.6g. The above raw materials are put into mixing according to the preparation method of water-...

Embodiment 2

[0021] Prepare 30% Beauveria bassiana · Thiacloprid (1.2% Beauveria bassiana+0.3% Thiacloprid) water dispersible granules, the quality of each component is respectively: take by weighing Beauveria bassiana powder 1.2g, thiacloprid 0.3g , wetting agent pull open powder 0.4g, dispersant sodium lignosulfonate 0.9g, disintegrant calcium chloride 0.25g, stabilizer disodium hydrogen phosphate 0.1g, binder sodium polyacrylate 0.25g, carrier diatomaceous earth 1.6 g. The above raw materials were dropped into and mixed according to the preparation method of water-dispersible granules (referring to Example 1) to obtain 30% Beauveria bassiana·thiacloprid water-dispersible granules (a microbial insecticide composition for preventing and controlling red imported fire ants). The used Beauveria bassiana powder contains 20 billion spores / gram of Beauveria bassiana, and the content of the original drug of thiacloprid is 95%. When calculating the mass ratio of Beauveria bassiana in actual prepa...

Embodiment 3

[0023] Prepare 30% Beauveria bassiana · Thiacloprid (0.75% Beauveria bassiana+0.75% Thiacloprid) water dispersible granules, the quality of each component is respectively: take by weighing Beauveria bassiana powder 0.75g, thiacloprid 0.75g , wetting agent pull open powder 0.4g, dispersant sodium lignosulfonate 0.9g, disintegrant calcium chloride 0.25g, stabilizer disodium hydrogen phosphate 0.1g, binder sodium polyacrylate 0.25g, carrier diatomaceous earth 1.6 g. The above raw materials were dropped into and mixed according to the preparation method of water-dispersible granules (refer to Example 1), and 30% Beauveria bassiana·thiacloprid water-dispersible granules were obtained. The used Beauveria bassiana powder contains 20 billion spores / gram of Beauveria bassiana, and the content of the original drug of thiacloprid is 95%. When calculating the mass ratio of Beauveria bassiana in actual preparation, pure thiacloprid is used for calculation. The microbial insecticide compos...

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Abstract

The invention discloses a microbial insecticide composition for controlling red fire ants. It includes Beauveria bassiana and thiacloprid, and the ratio of the number of Beauveria bassiana spores to the gram number of thiacloprid is: (8-1)×20 billion: 2-9g. The present invention finds through experiments that the combination of Beauveria bassiana and thiacloprid has a significant synergistic effect, the control effect is very good, it has the advantages of high efficiency and rapidity against red fire ants, it is non-toxic to humans and animals, and it has no pollution to soil and groundwater resources. , and its safety, which not only improves the insecticidal effect of Beauveria bassiana, but also delays the enhancement of RIFA resistance, and can reduce the use of chemical pesticides thiacloprid, reduce environmental pollution, thereby improving control efficiency and reducing effective Reduce the amount of ingredients, save costs, and delay the emergence of pest resistance.

Description

Technical field: [0001] The invention belongs to the field of preventing and controlling red imported fire ants, and in particular relates to a microbial insecticide composition for preventing and controlling red imported fire ants. Background technique: [0002] Beauveria bassiana is a type of entomopathogenic fungus that has been widely studied and used in various countries in the world. It can infect more than 700 insect species in 149 families of 15 orders (Feng et al., 1994). Research on the application of Beauveria bassiana to control RIFA has already been carried out abroad. Stimac et al. (1993) and Oi et al. (1994) have studied the effect of Beauveria bassiana in ant nests on RIFA in ant nests at different concentrations and in the field. control the situation. Therefore, pathogenic fungi provide hope for the sustainable control of RIFA (Liu Xiaoyan et al., 2006). At the same time, Beauveria bassiana is considered to be one of the more promising pathogenic microorg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N63/04A01P7/04A01N47/40
Inventor 李军韩诗畴戴建青徐齐云林妙凤
Owner INST OF ZOOLOGY GUANGDONG ACAD OF SCI
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