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Microbial insecticide composition for control of solenopsis invicta

A technology of microbial insecticides and compositions, applied in the direction of insecticides, biocides, animal repellants, etc., can solve the problems that have not been reported in the application of Beauveria bassiana and thiacloprid insecticides, and the pests are prone to resistance. In order to delay the resistance of pests, improve the insecticidal effect and improve the control effect

Active Publication Date: 2015-07-22
INST OF ZOOLOGY GUANGDONG ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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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  • Microbial insecticide composition for control of solenopsis invicta

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Example 1: Indoor toxicity determination experiment of the main compound of Beauveria bassiana and thiacloprid on the worker ants of the red imported fire ant

[0014] In the laboratory toxicity test, weigh a total of 1.5g of Beauveria bassiana powder and thiacloprid (the mass ratios of Beauveria bassiana powder and thiacloprid are: 1:0, 8:2, 6:4, 5:5, 4:6, 1:9 and 0:1, the Beauveria bassiana powder used contains 20 billion Beauveria bassiana spores / g, and the thiacloprid original drug content is 95% by mass. When the mass ratio is calculated by pure thiacloprid), wetting agent pull powder 0.4g, dispersant sodium lignosulfonate 0.9g, disintegrant calcium chloride 0.25g, stabilizer disodium hydrogen phosphate 0.1g, binding agent Sodium polyacrylate 0.25g, carrier diatomaceous earth 1.6g. The above raw materials are mixed according to the preparation method of water-dispersible granules (1. Mix the raw materials evenly according to the formula; 2. After the mixing is unifor...

Embodiment 2

[0021] Prepare 30% Beauveria bassiana·thiacloprid (1.2% Beauveria bassiana + 0.3% thiacloprid) water dispersible granules, the quality of each component is: weigh 1.2g of Beauveria bassiana powder and 0.3g of thiacloprid , Wetting agent pull 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 mixed according to the preparation method of water dispersible granules (refer to Example 1) to prepare 30% Beauveria bassiana·thiacloprid water dispersible granules (microbial insecticide composition for controlling red fire ants). The beauveria bassiana powder used contained 20 billion Beauveria bassiana spores / g, and the thiacloprid original drug content was 95%. When the actual formulation and the mass ratio of Beauveria bassiana were calculated, pure thiacloprid was used for calculation. The microbial insect...

Embodiment 3

[0023] Prepare 30% Beauveria bassiana·thiacloprid (0.75% Beauveria bassiana + 0.75% thiacloprid) water dispersible granules, the quality of each component is: weigh 0.75g Beauveria bassiana powder and 0.75g thiacloprid , Wetting agent pull 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 put into mixing according to the preparation method of water dispersible granules (refer to Example 1) to prepare 30% Beauveria bassiana·thiacloprid water dispersible granules. The beauveria bassiana powder used contained 20 billion Beauveria bassiana spores / g, and the thiacloprid original drug content was 95%. When the actual formulation and the mass ratio of Beauveria bassiana were calculated, pure thiacloprid was used for calculation. The microbial insecticide composition for controlling red fire ants is diluted...

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Abstract

The invention discloses a microbial insecticide composition for control of solenopsis invicta. The microbial insecticide composition consists of beauveria bassiana and thiacloprid, the number of beauveria bassiana spore and the gram of thiacloprid are in a ratio of (8-1)*20 billion:2-9g. Test finds that compounding of beauveria bassiana and thiacloprid has an obvious synergistic effect, can achieve very good control effect, has the advantages of high efficiency and rapidity on solenopsis invicta, is non-toxic to human and livestock, has no pollution to soil and groundwater resources, and is very safe. Therefore, the insecticidal effect of beauveria bassiana is improved, also reinforcement of solenopsis invicta drug resistance is delayed, the dosage of chemical pesticide thiacloprid is reduced, and environmental pollution is reduced, thereby improving the control effect, reducing the dosage of effective ingredients, saving cost and delaying the generation of pest resistance to insecticides.

Description

Technical field: [0001] The invention belongs to the field of red fire ant control, and specifically relates to a microbial insecticide composition for controlling red fire ants. Background technique: [0002] Beauveria bassiana is a kind of entomopathogenic fungi that has been studied and applied in many countries all over the world. It can infect more than 700 insects in 15 orders and 149 families (Feng et al., 1994). Studies on the application of Beauveria bassiana to the control of red fire ants have been carried out abroad. Stimac et al. (1993) and Oi et al. (1994) have studied the effects of Beauveria bassiana on red fire ants in ant nests in 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 microorganisms. [0003] Thiacloprid: The mechanism of action of thiacl...

Claims

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Application Information

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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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