Preparation method and application of botanical pesticide synergist
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A synergist and pesticide technology, applied in the field of pesticides, can solve the problems of long synthesis route, strong specificity, environmental hazards, etc., and achieve the effects of low cost, improving pesticide efficacy and reducing surface tension
Active Publication Date: 2016-08-17
GUANGXI NORMAL UNIV
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[0003] At present, the varieties of pesticide synergists mainly include chemically synthesized synergists such as synergist amine, synergist ether, synergist phosphorus, synergist sulfone, dimethyldioxybenzene derivatives, and octachlorodipropyl ether. However, there are still some defects such as long synthetic route, high cost, certain harm to the environment and relatively strong specificity.
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Embodiment 1
[0018] Take 100 g of rosin, add 500 mL of 95% ethanol to dissolve, take 180 mL of the solution, add 16 mL of 10% NaOH, stir for 10 min, the pH value of the solution is about 7.22 at this time, and stand still to obtain liquid A. According to the mass ratio of BY-125 emulsifier: 500 # emulsifier: A liquid = 3:1:36, mix BY-125, 500 # emulsifier and A liquid to get No. 1 synergist.
Embodiment 2
[0020] Take 300 g of rosin, add 1 L of 95% ethanol to dissolve, take 50 mL of supernatant, add 3 mL of 25% NaOH, and stir for 30 min. At this time, the pH value of the solution is about 7.72. According to the mass ratio of BY-125 emulsifier: 500 # emulsifier: A liquid = 3:2:45, mix BY-125, 500 # emulsifier and A liquid to get No. 2 synergist.
Embodiment 3
[0022] Take 370 g of rosin, add 1 L of 95% ethanol to dissolve, take 180 mL of supernatant, add 20 mL of 15% NaOH, and stir for 30 min. At this time, the pH value of the solution is about 7.34. According to the mass ratio of BY-125 emulsifier: 500 # emulsifier: A liquid = 2:1:27, mix BY-125, 500 # emulsifier and A liquid to get No. 3 synergist.
[0023] The synergist prepared by the invention can reduce surface tension, and the determination method adopts the platinum plate method, and the synergist is diluted with water to different times, and then measured with a semi-automatic surface tension meter.
[0024]
[0025] As can be seen from Table 1, the synergist prepared has the effect of significantly reducing the surface tension of water, which may be one of the important reasons for its synergistic effect. In addition, rosin or rosin are viscous large natural resins, and the synergist made It is beneficial to improve the adhesion of pesticides on the crop surface is anot...
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Abstract
The invention discloses a preparation method and application of botanical pesticide synergist. The preparation method comprises the steps that ethanol is added to rosin or pine gum, the mixture is stirred and dissolved, and filtering is carried out to obtain a rosin or pine gum solution; alkali liquor is added to the rosin or pine gum solution for reacting, an emulgator is added, and the synergist is obtained after filtering. The raw materials are cheap and easy to obtain, the preparation route is simple, no special reaction equipment is needed, energy is saved, environment friendliness is achieved, cost is low, the yield is high, and the synergist is very suitable for large-scale production. The obtained synergist can reduce the surface tension of pesticide; after the synergist is compounded with multiple kinds of pesticide, acaricide, herbicide and other pesticide, the preventing and control effect of the pesticide can be improved, the amount of adopted pesticide can be reduced, the advantages of being broad in spectrum, efficient, cheap and the like are achieved, good popularization and application prospects are achieved, and economic, social and environmental benefits are remarkable.
Description
technical field [0001] The invention relates to a botanical pesticide synergist and its preparation method and application, belonging to the technical field of pesticides. Background technique [0002] The development of agriculture is inseparable from pesticides, but while pesticides have made great contributions to agricultural development, they have also brought harm to the natural environment. In recent years, due to the abuse of chemical pesticides, the resistance of pests has increased, leading to an increase in the amount and frequency of pesticide use, further aggravating environmental pollution and ecological damage, causing a vicious circle and seriously endangering human life and health. During the application of pesticides, only about 5% of them play their due role, while the vast majority of pesticides are lost to the surrounding environment such as water and soil, causing environmental hazards. How to improve the efficiency of pesticide use, reduce the amount ...
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