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Pesticides combined with Paecilomyces fumosoroseus and Azadirachtin

A technology of Paecilomyces fumigatus and insecticides, applied in the field of pesticides, can solve the problems of limited resources and low supply of azadirachtin, and achieve the effects of delaying pest resistance and good control effect

Inactive Publication Date: 2008-10-01
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the advantages of low toxicity to higher animals, low residue, and pests are not easy to develop drug resistance, but the resources of azadirachtin are limited, and the supply of azadirachtin preparations is far lower than the demand in production
[0004] The use of pesticide compounding technology or mixed application technology can reduce the amount of azadirachtin used in actual production. Through a large number of experimental studies, the applicant found that the mixing of sub-dose pesticides and biopesticides can simultaneously improve the quick-acting and reduce microbial pesticides. Pesticide residues, and no relevant technical reports have been found on the compound insecticide of Paecilomyces fumigatus and azadirachtin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: 20% Paecilomyces azadirachtin suspension concentrate (diluted 2000 times)

[0017] Part A is 40% Paecilomyces fumigatus conidia suspension: 40% Paecilomyces fumigatus conidia powder is dissolved in 0.21M phosphate buffer and 10% glycerin mixture, pH7.0 , Store at 4-8°C.

[0018] Part B is wettable powder: azadirachtin (commercially available) 0.1%, Tween-80 20%, sodium lignosulfonate 6%, wetting agent LX 4%, add pottery clay to make up to 100%.

[0019] Part A and Part B respectively account for 50%, and the two parts are mixed directly to obtain 20% Paecilomyces fumigatus:Azadirachtin suspension concentrate, the mass ratio of Paecilomyces fumigatus:Azadirachtin is 100:0.25. The results of the toxicity test are shown in Table 1.

Embodiment 2

[0020] Embodiment 2: 50% rose fume Paecilomyces azadirachtin oil (diluted 2000 times)

[0021] Rose smoke Paecilomyces powder (10 10 Individual / g) 50%, azadirachtin 0.1% (commercially available), Tween-80 5%, paraffin oil 23%, methyl green 2%, add diatomaceous earth and make up to 100%, make 50% imitation blue Azadirachtin oil. Wherein, the mass ratio of Paecilomyces fumigatus powder: azadirachtin is 100:0.2. The results of the toxicity test are shown in Table 1.

Embodiment 3

[0022] Embodiment 3: 60% Paecilomyces azadirachtin oil (diluted 2000 times)

[0023] Rose smoke Paecilomyces powder (10 10 pcs / g) 60%, azadirachtin 0.05% (commercially available), methyl green 2%, Tween-80 5%, paraffin oil 23%, kaolin is added to 100%, and 60% rose smoke color imitation green is obtained Azadirachtin oil. Wherein, the mass ratio of Paecilomyces fumigatus powder: azadirachtin is 100:0.083. The results of the toxicity test are shown in Table 1.

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PUM

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Abstract

The invention discloses a combination pesticide of paecilomyces fumosoroseus and azadirachtin, comprising 20 to 60 percent of host crystal and 40 to 80 percent of adjuvant according to mass percent, the host crystal is the mixture of paecilomyces fumosoroseus and azadirachtin, the mass ratio of the paecilomyces fumosoroseus and the azadirachtin is 100: 0.05 to 0.3; the adjuvant is stabilizer, addition agent and filler. By adopting the blending of agricultural chemical and biopesticide with sub-dose, the combination pesticide of the invention is superior in control effect when only one medicine is used, meets the production demands of organic foods, has no pollution and residue to environment, and is beneficial to deferring the generation of drug fastness of pests, and has good control effects on pests such as whitefly and aphis and diamondback moth, etc.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and specifically relates to a microbial insecticide, in particular to an environmentally friendly, pollution-free, and residue-free compound insecticide of Paecilomyces fumigatus and azadirachtin. Background technique [0002] Paecilomyces fumosoroseus (Wize) Brown & Smith is an entomopathogenic fungus. As a living biological pesticide, it has a new mechanism of action different from existing chemical insecticides, and is environmentally friendly and non-toxic. The residual characteristics can be used as an alternative control drug for the control of some insects resistant to Bacillus thuringiensis (Bt), and the development and utilization of Paecilomyces fumosorose has important economic significance. Paecilomyces fumigatus is widely distributed, and has good control effects on aphids, whitefly, diamondback moth, etc., and has a good application prospect. [0003] Azadirachtin (azadirachtin)...

Claims

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Application Information

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IPC IPC(8): A01N63/04A01N43/12A01P7/00
Inventor 黄振任顺祥
Owner SOUTH CHINA AGRI UNIV
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