A biological control method for red fire ants

A fire ant biological and biological control technology, applied in botany equipment and methods, biocide, animal repellent, etc., can solve the problems of affecting the insecticidal activity of Beauveria bassiana, slow speed, low spore germination rate, etc. Achieve the effects of increasing the humidity in the nest, improving the environmental conditions, and enhancing the insecticidal activity

Active Publication Date: 2020-08-04
INST OF ZOOLOGY GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when Beauveria bassiana is used in the field, due to the limitation of temperature, humidity, ultraviolet light and other environmental conditions, the germination rate of spores is low, which affects the insecticidal activity of Beauveria bassiana. Therefore, the use of pathogenic microorganisms Beauveria bassiana alone The rate of control of RIFA by B. anisopliae is relatively slow

Method used

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  • A biological control method for red fire ants
  • A biological control method for red fire ants
  • A biological control method for red fire ants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Indoor virulence determination experiment of Beauveria bassiana and sodium chloride compounded red imported fire ants worker termites

[0018] During indoor toxicity determination, weigh 5 g of Beauveria bassiana powder and dissolve it in 1 L of water, and mix evenly to obtain Beauveria bassiana solution. The used Beauveria bassiana powder contains 20 billion spores of Beauveria bassiana / g. Measure 9 parts of Beauveria bassiana solutions of 100ml each from 1L of Beauveria bassiana solution, and then add NaCl to them respectively, so that the concentrations of NaCl in the 9 parts of Beauveria bassiana solutions are: 0mmol / L, 25mmol / L, 75mmol / L, 100mmol / L, 125mmol / L, 150mmol / L, 200mmol / L, 250mmol / L, 300mmol / L, sequentially obtain Beauveria bassiana · sodium chloride water dispersion solution, wherein the spore concentration of Beauveria bassiana is 1× 10 8 pcs / mL -1 .

[0019] The toxicity of Beauveria bassiana solution, Beauveria bassiana·NaCl aqueous dis...

Embodiment 2

[0022] Embodiment 2: Beauveria bassiana · sodium chloride aqueous dispersant is to the indoor toxicity determination experiment of red fire ants worker termite

[0023] Take by weighing Beauveria bassiana powder and sodium chloride total 30g (wherein Beauveria bassiana powder and sodium chloride mass ratio are respectively: 5:1.46; 5:4.38; 5:5.84; 5:7.30; 5:8.77; 5:11.69 ; 5:14.61g; 5:17.53, the used Beauveria bassiana powder contains 20 billion / g of Beauveria bassiana spores.), wetting agent pulls open powder 8g, dispersant sodium lignosulfonate 18g, disintegrant calcium chloride 5g, stabilizer disodium hydrogen phosphate 2g, binder sodium polyacrylate 5g, carrier diatomaceous earth 32g, the above raw materials are put into mixing according to the preparation method of water dispersible granules (1, the raw materials are mixed according to the formula; 2, mixed evenly After being sanded by a sand mill and passing the test, spray granulation is carried out; 3. After spray gran...

Embodiment 3

[0032] During the indoor toxicity test, weigh 1 g of Beauveria bassiana powder and 7.5 g of sodium chloride, dissolve them in 1 L of water, and mix them uniformly to obtain a Beauveria bassiana solution. The used Beauveria bassiana powder contains 20 billion spores of Beauveria bassiana / g.

[0033] The indoor toxicity test was carried out according to the method of Example 1, and the results showed that the Beauveria bassiana solution of the present example had a better killing effect on red fire ants.

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Abstract

The invention discloses a biological solenopsis invicta prevention and control method which comprises the following steps: dissolving a pathogenic microorganism-containing medicament for preventing and treating solenopsis invicta in water to prepare a water dispersant and then enabling the solenopsis invicta to be stained with the water dispersant; the pathogenic microorganism-containing medicament for preventing and treating the solenopsis invicta comprises beauveria bassiana and sodium chloride, and the ratio of the number of beauveria bassiana spores to the gram of the sodium chloride is (1-8)*20 billion:(4.0-7.5)g. Tests show that the compounded beauveria bassiana and sodium chloride has a significant synergistic effect, is very good in prevention and treatment effects, has the advantages of high efficiency and quickness for the solenopsis invicta and is non-toxic to humans and animals, free from pollution to soil and groundwater resources and safe, so that the insecticidal effectof the beauveria bassiana is improved, the enhancement of solenopsis invicta resistance to drugs is delayed, and the environmental pollution is reduced; therefore, the prevention effect is improved, the cost is reduced, and the production of pest resistance to the drugs is delayed.

Description

Technical field: [0001] The invention belongs to the field of prevention and control of red imported fire ants, and in particular relates to a method for biological prevention and control of red imported fire ants. Background technique: [0002] RIFA solenopsis invicta belongs to the order Hymenoptera, Formicidae, Myrmicinae, and the genus Solenopsis. It not only feeds on seeds, fruits, young shoots, tender stems and roots of agricultural and forestry plants, It also preys on soil-dwelling animals, bites poultry and livestock, and even attacks humans, endangering public health safety. Since the first discovery of RIFA in Wuchuan City, Guangdong Province in mainland China at the end of 2004, it has posed a serious threat to the production of agricultural ecosystems and the structure and function of natural ecosystems in our province. At present, the prevention and control of RIFA mainly include: distributing bait, dusting agent, nest irrigation and other methods, but mainly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N63/30A01N59/08A01N25/04A01P7/04A01M1/20
Inventor 李军韩诗畴叶静文押玉柯李志刚徐齐云
Owner INST OF ZOOLOGY GUANGDONG ACAD OF SCI
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