CN107926964B - Synergistic insecticidal composition containing veratrine - Google Patents
Synergistic insecticidal composition containing veratrine Download PDFInfo
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- CN107926964B CN107926964B CN201711482115.9A CN201711482115A CN107926964B CN 107926964 B CN107926964 B CN 107926964B CN 201711482115 A CN201711482115 A CN 201711482115A CN 107926964 B CN107926964 B CN 107926964B
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- veratrine
- lepimectin
- insecticidal
- synergistic composition
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The invention belongs to the technical field of pesticide research and development, and particularly relates to an insecticidal synergistic composition containing veratrine. The insecticidal synergistic composition containing veratrine is characterized in that the effective components are veratrine and lepimectin, and the weight ratio of the veratrine to the lepimectin is 1:50-50: 1. The insecticidal synergistic composition has obvious synergistic effect, overcomes and delays the drug resistance of pests, expands the control spectrum, has high insecticidal speed and obviously improves the control effect.
Description
Technical Field
The invention belongs to the technical field of pesticide research and development, and particularly relates to an insecticidal synergistic composition containing veratrine.
Background
Veratrine is an active substance extracted from the rhizome of veratrum which is a perennial herb of veratrum, has the characteristics of no public nuisance, no pollution, no residual toxicity and the like, and is a new generation of high-efficiency, low-toxicity and broad-spectrum pesticide. The main insecticidal action mechanism of the pesticide is that after entering a digestive system through the epidermis or the suction of a polypide, the pesticide causes local stimulation to cause reflex polypide excitation, firstly inhibits sensory nerve endings of the polypide, and then inhibits central nerves to cause death of pests. The veratrine has similar action object to nicotine, has contact poisoning and stomach poisoning effects, can be used for preventing and treating aphid, whitefly, psylla, rice planthopper, leaf miner, rice leaf roller, diamond back moth, etc., and is a quick-acting pesticide.
The biopesticide lepimectin is a derivative of milbemycin A3/A4 found by the Japan Co-Ltd, is used as a novel pesticide for vegetables and fruits such as cabbage, tomato, orange, strawberry, grape and the like, and mainly controls pests such as lepidoptera and homoptera. The medicine has the characteristics of high insecticidal activity, small dosage, safety to human and livestock, no environmental pollution, strong specificity, no harm to natural enemies, no easy generation of resistance and the like.
In the research of pesticides, the biological pesticide is used for replacing chemical pesticide, and the active ingredients of different varieties are compounded, so that the method is a common method for preventing and treating resistant insect pests. The compound formula with good synergy obviously improves the actual control effect and reduces the using amount of pesticide, thereby greatly delaying the generation of drug resistance and being an important means for comprehensively controlling insect pests. In the prior art, no report on compounding veratrine and lepimectin exists.
Disclosure of Invention
The invention aims to provide a veratrine-containing insecticidal composition, which is a multifunctional insecticidal composition for preventing and controlling lepidoptera pests, and is particularly preferably used for preventing and controlling diamond back moths.
The invention provides the following technical scheme:
a synergistic insecticidal composition containing veratrine comprises veratrine and lepimectin at a weight ratio of 1:50-50: 1.
Preferably, the weight ratio of the veratrine to the lepimectin is 1:25-25: 1.
Preferably, the weight ratio of the veratrine to the lepimectin is 1:10-10: 1.
Preferably, the weight ratio of the veratrine to the lepimectin is 10: 1.
The invention also provides a pesticide preparation containing the insecticidal synergistic composition, wherein the weight of veratrine and lepimectin accounts for 1-60% of the total weight of the preparation, and the balance is auxiliary materials.
Preferably, the veratrine and lepimectin account for 10-50% of the total mass of the whole preparation.
Preferably, the pesticide preparation is in the form of emulsifiable concentrate, microemulsion, suspending agent, wettable powder or soluble liquid.
Preferably, the auxiliary materials are selected from one or more of emulsifying agents, dispersing agents, wetting agents, binding agents, antifreezing agents, antifoaming agents, thickening agents, fillers, solvents and the like.
Preferably, the emulsifier is one or more of agricultural emulsion series, alkylphenol polyoxyethylene ether, benzyl phenol polyoxyethylene ether, phenethyl phenol polyoxyethylene ether, castor oil polyoxyethylene ether, phenethyl phenol polyoxyethylene polyoxypropylene ether and the like.
Preferably, the dispersant is one or more selected from the group consisting of polycarboxylate, lignosulfonate, alkylphenol polyoxyethylene pyrimidine formaldehyde condensate sulfate, calcium alkylbenzene sulfonate, sodium naphthalene sulfonate formaldehyde condensate, alkylphenol polyoxyethylene pyrimidine, fatty amine polyoxyethylene pyrimidine, and fatty acid polyoxyethylene ester.
Preferably, the humectant is selected from: one or more of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, nekal BX, wetting penetrant F, fructus Gleditsiae Abnormalis powder, faeces Bombycis, and fructus Sapindi Mukouossi powder.
Preferably, the binder is selected from: one or more of acacia, white dextrin, methyl cellulose, sodium acrylate, polyvinylpyrrolidone, crosslinked polyvinylpyrrolidone, polyethylene glycol, and polyvinyl alcohol.
Preferably, the antifreeze agent is selected from: one or more of ethylene glycol, propylene glycol, glycerol and polyethylene glycol.
Preferably, the defoaming agent is selected from: silicone oil, silicone compound, C10-20 saturated fatty acid compound, and C8-10 fatty alcohol compound.
Preferably, the thickener is selected from the group consisting of: one or more of xanthan gum, polyvinyl alcohol and polyethylene glycol.
Preferably, the filler is selected from: one or more of kaolin, diatomite, bentonite, attapulgite, white carbon black, starch and light calcium carbonate.
The insecticidal synergistic composition is used for preventing and controlling plant pests, wherein the pests can be lepidoptera pests, homoptera pests and the like. Preferably for the control of diamondback moth.
Compared with the prior art, the invention has the following beneficial effects:
(1) compared with single dosage, the insecticidal composition of the invention has obvious synergistic effect, overcomes and delays the drug resistance of pests, expands the control spectrum, has high insecticidal speed and obviously improves the control effect.
(2) The insecticidal composition of the invention reduces the control cost, can replace high-toxicity pesticides, and has the advantages of quick effect and long effect.
Detailed Description
The following detailed description of specific embodiments of the present invention is provided in conjunction with examples, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Preparation example
Example 1: 20% veratrine-lepimectin suspending agent
Veratrine 10%, lepimectin 10%, sodium methyl naphthalene sulfonate formaldehyde condensate 8%, benzyl phenol polyoxyethylene ether 2%, white carbon black 4%, magnesium aluminum silicate 1.5%, ethylene glycol 4%, silicone 0.5%, and water to 100%.
Example 2: 40% veratrine-lepimectin suspending agent
Veratrine 35%, lepimectin 5%, sodium lignosulfonate 10%, castor oil polyoxyethylene ether 4%, saponin powder 3%, xanthan gum 2%, polyvinyl alcohol 1%, propylene glycol 5% and water to 100%.
Example 3: 30% veratrine lepimectin wettable powder
Veratrine 10%, lepimectin 20%, sodium lignosulfonate 7%, sodium methylene dinaphthalenesulfonate 5%, and white carbon black added to 100%.
Example 4: 15% veratrine-lepimectin wettable powder
Veratrine 10%, lepimectin 5%, sodium dodecyl sulfate 4%, sodium lignosulfonate 3.5%, white carbon black 10%, and kaolin to 100%.
(II) biological assay
Experiment one: indoor toxicity determination of veratrine and lepimectin compounded on diamond back moth
The test method comprises the following steps: a blade dipping method is adopted. The tested pesticide was dissolved and diluted with tap water into 5-6 concentration gradients. Cutting clean caulis et folium Brassicae Capitatae into 7cm round pieces, soaking in each concentration gradient medicinal liquid for 10s, and taking outThen dried, and the leaves are placed in a culture dish padded with filter paper for moisture preservation. Subsequently, 3 rd larvae of diamondback moth which had been starved for 4h were inoculated, 15 larvae were treated at each concentration, and the procedure was repeated 4 times. The control was treated with clean water. And (3) placing the culture dish in a 25 +/-1 ℃ artificial climate box, checking the survival condition of 3-instar larvae after 48 hours, and taking the death standard that no obvious autonomous reaction exists when the fine hairbrush touches the larvae. Calculating a toxicity regression equation according to the number of tested insects and the number of treated dead insects, and then calculating LC
50The value is obtained. And finally, calculating the co-toxicity coefficient (CTC) according to the Sun Yunpei method. The specific measurement results are shown in Table 1.
When the CTC is less than or equal to 80, the composition shows antagonism, when the CTC is more than 80 and less than 120, the composition shows additive action, and when the CTC is more than or equal to 120, the composition shows synergistic action.
Measured toxicity index (ATI) ═ standard medicament LC
50Test agent LC
50)×100
Theoretical virulence index (TTI) ═ A agent virulence index x percent of A in the mixture + B agent virulence index x percent of B in the mixture
Co-toxicity coefficient (CTC) × 100 [ measured toxicity index (ATI) of the mixture)/Theoretical Toxicity Index (TTI) of the mixture ].
TABLE 1 determination of indoor virulence of veratrine and lepimectin against plutella xylostella
As can be seen from Table 1, the combination of veratrine and lepimectin has a synergistic effect on plutella xylostella within the range of 1:50-50:1, and the CTC value is more than 120. When the veratrine and lepimectin are compounded within the range of 1:25-50:1, the CTC value is more than 130, and the obvious synergistic effect is shown; particularly, when the proportion of veratrine to lepimectin is 10:1 and the CTC value is 157.0, the synergistic effect is strongest.
Test No. two: veratrine and lepimectin compounded field control effect on cabbage diamondback moth
The test method comprises the following steps: spraying by a knapsack manual sprayer with the spraying liquid amount of 750kg/hm
2. A fixed-point plant-fixing investigation method is adopted. Fixed-point survey of larvae on 20 cabbage plants per plotAnd (4) counting. Investigating population base number before applying pesticide, investigating residual live population on cabbage 3d and 7d after applying pesticide, and calculating the control effect of each treatment according to population reduction rate.
TABLE 2 field control of cabbage plutella xylostella by veratrine and lepimectin combinations
As can be seen from Table 2, compared with the single use, the combination of veratrine and lepimectin can obviously improve the control effect of the compound on cabbage plutella xylostella and has obvious synergistic effect. Can slow down the generation of resistance, has good safety to crops and meets the safety requirement of pesticide preparations.
The present invention has been further described with reference to the examples, but the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (8)
1. A synergistic insecticidal composition containing veratrine is characterized by containing veratrine and lepimectin in a weight ratio of 1:50-50: 1.
2. The insecticidal synergistic composition as claimed in claim 1, wherein the weight ratio of veratrine to lepimectin is 1:25-25: 1.
3. The insecticidal synergistic composition as claimed in claim 2, wherein the weight ratio of veratrine to lepimectin is 1:10-10: 1.
4. The insecticidal synergistic composition as claimed in claim 3, wherein the weight ratio of veratrine to lepimectin is 10: 1.
5. A pesticidal formulation comprising the pesticidal synergistic composition of any one of claims 1 to 4, characterized in that: the veratrine and lepimectin account for 1-60% of the total mass of the preparation, and the balance is auxiliary materials.
6. The pesticide formulation according to claim 5, characterized in that: the weight of veratrine and lepimectin accounts for 10-50% of the total weight of the preparation.
7. The pesticide formulation according to claim 5, characterized in that: the pesticide preparation is in the form of missible oil, microemulsion, suspending agent, wettable powder or soluble liquid.
8. Use of the pesticidal synergistic composition according to any one of claims 1 to 4 for controlling plant pests.
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| CN201711482115.9A CN107926964B (en) | 2017-12-29 | 2017-12-29 | Synergistic insecticidal composition containing veratrine |
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| CN107926964B true CN107926964B (en) | 2020-02-11 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308871A (en) * | 2000-11-23 | 2001-08-22 | 刘茂萱 | Agricultural chemical prepared from avermectin and alkaloid extracted from plant and its preparing process |
| JP2015131815A (en) * | 2015-02-07 | 2015-07-23 | 住友化学株式会社 | Plant disease control composition and use thereof |
| JP2015199758A (en) * | 2015-06-15 | 2015-11-12 | 住友化学株式会社 | Composition for agricultural chemicals and method for promoting plant growth |
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2017
- 2017-12-29 CN CN201711482115.9A patent/CN107926964B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308871A (en) * | 2000-11-23 | 2001-08-22 | 刘茂萱 | Agricultural chemical prepared from avermectin and alkaloid extracted from plant and its preparing process |
| JP2015131815A (en) * | 2015-02-07 | 2015-07-23 | 住友化学株式会社 | Plant disease control composition and use thereof |
| JP2015199758A (en) * | 2015-06-15 | 2015-11-12 | 住友化学株式会社 | Composition for agricultural chemicals and method for promoting plant growth |
Non-Patent Citations (2)
| Title |
|---|
| 2.4%藜芦碱•阿维AS防治番茄根结线虫药效试验;窦瑞木 等;《农药》;20100831;第49卷(第8期);第602-603页 * |
| 生物农药混配对枸杞瘿螨联合毒力的测定;张丽荣 等;《湖北农业科学》;20091231;第48卷(第12期);第3035-3036、3040页 * |
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