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Biological solenopsis invicta prevention and control method

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

Active Publication Date: 2018-01-05
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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  • Biological solenopsis invicta prevention and control method
  • Biological solenopsis invicta prevention and control method
  • Biological solenopsis invicta prevention and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Beauveria bassiana and sodium chloride compound the indoor virulence test of RIFA worker ants

[0018] In the indoor toxicity test, 5 g of Beauveria bassiana powder was weighed and dissolved in 1 L of water, and mixed evenly to obtain a Beauveria bassiana solution. The Beauveria bassiana powder used contains 20 billion Beauveria bassiana spores / g. Measure 9 parts of 100ml of Beauveria bassiana solution from 1L of Beauveria bassiana solution, and then add NaCl to it respectively, so that the concentrations of NaCl in the 9 parts of Beauveria bassiana solution 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 aqueous dispersion solution, wherein the spore concentration of Beauveria bassiana is 1× 10 8 pcs / mL -1 .

[0019] The virulence of Beauveria bassiana solution, Beauveria bassiana·sodium chloride aqueous dispersion solution, sodium chloride solu...

Embodiment 2

[0022] Example 2: Indoor toxicity test of Beauveria bassiana·sodium chloride aqueous dispersion to RIFA worker ants

[0023] Weigh 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 Beauveria bassiana powder used contains 20 billion Beauveria bassiana spores / g.), wetting agent pulling powder 8g, dispersant sodium lignosulfonate 18g, disintegrating agent calcium chloride 5g, stabilizer disodium hydrogen phosphate 2g, binder sodium polyacrylate 5g, carrier diatomaceous earth 32g, the above raw materials are mixed according to the preparation method of water dispersible granules (1. Mix the raw materials according to the formula; 2. Mix evenly After being sanded by a sand mill and tested to be qualified, spray granulation is carried out; 3. After spray granulation, it is screened by a vibrating screen, and the unqualif...

Embodiment 3

[0032] In the indoor toxicity test, 1 g of Beauveria bassiana powder and 7.5 g of sodium chloride were weighed and dissolved in 1 L of water, and mixed evenly to obtain a Beauveria bassiana solution. The Beauveria bassiana powder used contains 20 billion Beauveria bassiana spores / 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 this example has a good killing effect on RIFA.

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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 RIFA prevention and control, in particular to a RIFA biological control method. Background technique: [0002] The red fire ant solenopsis invicta belongs to Hymenoptera, Formicidae, Myrmicinae, and Solenopsis. It not only feeds on the seeds, fruits, young shoots, tender stems and roots of agricultural and forestry plants, They also prey on soil-dwelling animals, bite poultry and livestock, and even attack humans, endangering public health and safety. Since the first discovery of RIFA in Wuchuan City, Guangdong Province at the end of 2004 in mainland my country, 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: bait, dusting, and nest irrigation, but mainly chemical agents. Although chemical pesticides have made great contributions to the timely control of R...

Claims

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Application Information

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IPC IPC(8): A01N63/04A01N59/08A01N25/04A01P7/04A01M1/20
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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