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Purple Datura stramonium bio-pesticide for controlling aphids and red spiders

A technology of violet mandala and bio-derived pesticides, applied in the direction of insecticides, biocides, animal repellents, etc., can solve the problems of complex production process costs, etc., reduce the number of times and dosage of use, and reduce the amount of pesticide residues , the effect of easy access to raw materials

Inactive Publication Date: 2010-09-29
INST OF PLANT PROTECTION GANSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Violet datura oil emulsion has simple processing technology, low cost, and is suitable for industrial production, which overcomes the disadvantages of complex production process and high cost of many botanical pesticides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 30 parts of Datura Violet oil, 20 parts of solvent (5 parts of methanol, 5 parts of ethanol, 6 parts of n-butanol, 4 parts of isopropanol), 15 parts of emulsifier (8 parts for 2201, 4 parts for 1601, 3 parts for 0201B ), 0.5 part of penetrant (0.5 part of penetrant BX), 1 part of antifreeze (1 part of ethylene glycol).

[0021] Its preparation method is as follows:

[0022] 1. Grind the dried Datura japonica seeds to 30 mesh with a pulverizer, then pour them into the extraction tank, add solvent for extraction 3 times, each time the amount of solvent is the same, and the extraction time is 24, 48, and 72 hours respectively. Combine the three extracts, pour the extract into a concentration tank and concentrate under reduced pressure at -0.06MPa and 45°C until the solvent evaporates to obtain the mother liquor of datura datura oil. Recover the solvent for later use.

[0023] 2. Add 30 parts of datura datura oil mother liquor into the preparation kettle at 20°C, then add...

Embodiment 2

[0025] 35 parts of Datura Violet oil, 35 parts of solvent (10 parts of benzene, 10 parts of toluene, 7 parts of xylene, 8 parts of dimethyl sulfoxide (DMSO)), 25 parts of emulsifier (10 parts of 0203B, 10 parts of 127, 103 is 5 parts), 2 parts of penetrant (2 parts of azone), 3 parts of antifreeze (3 parts of urea).

[0026] Its preparation method is as follows:

[0027] 1. Use a pulverizer to grind the dried Datura japonica seeds to 40 mesh, pour them into the extraction tank, add solvent for extraction 4 times, the amount of solvent is the same each time, and the extraction time is 26, 50, 60, 70 After 4 hours, the extracts were combined for 4 times, and the extracts were poured into a concentration tank at -0.06MPa, 45°C and concentrated under reduced pressure until the solvent evaporated to obtain the mother liquor of datura datura oil. Recover the solvent for later use.

[0028] 2. Add 35 parts of datura datura oil mother liquor into the preparation kettle at 20°C, then...

Embodiment 3

[0030] 40 parts of Datura Violet oil, 50 parts of solvent (20 parts of dimethylformamide (DMF), 30 parts of cyclohexanone), 30 parts of emulsifier (10 parts of 700#, 10 parts of 500#, 10 parts of OP-10 parts), 3 parts of penetrant (3 parts of penetrant T), 5 parts of antifreeze (5 parts of calcium chloride).

[0031] Its preparation method is as follows:

[0032] 1. Grind the dried Datura japonica seeds to 50 mesh with a pulverizer, pour them into the extraction tank, add solvent for extraction 5 times, each time the amount of solvent is the same, and the extraction time is 25, 40, 50, 60 , 70 hours, combined 5 extractions, poured the extract into a concentration tank at -0.06MPa, 45°C and concentrated under reduced pressure until the solvent evaporated to obtain the mother liquor of datura datura oil. Recover the solvent for later use.

[0033] 2. Add 40 parts of datura datura oil mother liquor into the preparation kettle at 20°C, then add solvent in proportion, stir to dis...

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PUM

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Abstract

The invention relates to purple Datura stramonium oil botanical bio-pesticide. The existing botanical bio-pesticide has complex production process and high cost. The raw material formula of the invention is as follows: 30-40 parts of purple Datura stramonium oil, 20-50 parts of solvent, 15-30 parts of emulsifier, 0.5-3 parts of penetrator and 1-5 parts of antifreeze. The seeds of purple Datura stramonium are crushed to 30-50mesh, and the solvent is added; the extract is emerged after multiple impregnation extraction and is subjected to vacuum concentration under the pressure of minus 0.06Mpa at a temperature of 45DEG C until the solvent is volatilized so as to obtain the purple Datura stramonium oil; and the solvent is added to be dissolved again, and the emulsifier, the penetrant, and the antifreeze are added to be evenly mixed so as to obtain a purple Datura stramonium oil emulsion finished product. The invention has simple processing technology and low cost, and is suitable for industrial production, the emulsion has good quick effect and long lasting period, can significantly reduce the use number and use dosage of the chemical pesticide, effectively reduces the pesticide residue quantity of melons and vegetables, protects the ecological environment, and promotes the quality and safety of agricultural products.

Description

technical field [0001] The invention relates to the field of plant-derived biopesticides for controlling aphids and red spiders in melon and vegetable crops, and in particular to a formula and a preparation method of Datura japonica biopesticides. Background technique [0002] Aphids [Myzus persicae (Sulzer), Aphis gossypii Glover, Brevicorynebrassicae (L.) and Lipaphis erysimi (Kaltenbach), etc.] and spider mites [Tetranychus cinnabarinus (Boiduval), Tetranychus truncation T. truncates Ehara and T. urticae Koch, etc.] are the main pests that harm melon and vegetable crops. With the global warming and the continuous expansion of protected cultivation area, the damage is serious year by year. High temperature can increase the number of occurrence bases and increase the number of occurrence generations, and the protected area becomes a place for a large number of pests to overwinter and reproduce in winter. Secondly, in protected cultivation, the natural enemies of pests are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/38A01N25/04A01P7/04A01P7/02
Inventor 胡冠芳刘敏艳李玉奇余海涛张新瑞李建军赵峰
Owner INST OF PLANT PROTECTION GANSU ACAD OF AGRI SCI
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