CN115281199A - Insecticidal composition for preventing and treating spinach plutella xylostella - Google Patents
Insecticidal composition for preventing and treating spinach plutella xylostella Download PDFInfo
- Publication number
- CN115281199A CN115281199A CN202210784429.9A CN202210784429A CN115281199A CN 115281199 A CN115281199 A CN 115281199A CN 202210784429 A CN202210784429 A CN 202210784429A CN 115281199 A CN115281199 A CN 115281199A
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- Prior art keywords
- fenpropathrin
- chlorantraniliprole
- test
- agent
- spinach
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
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- 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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
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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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
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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
- A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P7/00—Arthropodicides
- A01P7/04—Insecticides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Plant Pathology (AREA)
- Zoology (AREA)
- Health & Medical Sciences (AREA)
- Environmental Sciences (AREA)
- Pest Control & Pesticides (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The invention relates to the technical field of pesticides, discloses an insecticidal composition for preventing and treating spinach diamondback moth, and particularly relates to an insecticidal composition of fenpropathrin and chlorantraniliprole. The insecticidal composition is prepared from fenpropathrin, chlorantraniliprole and an auxiliary agent, and is prepared into a suspending agent, wherein the weight ratio of the fenpropathrin to the chlorantraniliprole is 6 to 1-4. The insecticidal composition can improve the use efficiency of pesticides, improves the effect of preventing and controlling the spinach diamond back moth, has obvious synergistic effect, reduces the use amount of the pesticides, reduces the pesticide cost of farmers, and is beneficial to environment and food safety and environmental protection.
Description
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to an insecticidal composition for preventing and treating spinach plutella xylostella.
Background
Fenpropathrin, the name of English, fenpropathrin, is a pyrethroid insecticide acaricide, with moderate toxicity, contact poisoning, stomach poisoning and certain repelling effect, without systemic and fumigating effect. It is a nerve poison, and acts on the nervous system of insects to make the insects be over excited and paralyzed and die. The pesticide has the advantages of wide insecticidal spectrum, quick knockdown effect and long lasting period, is characterized by simultaneously having good control effect on a plurality of pests and spider mites, and is particularly suitable for being used when the pests and the spider mites are simultaneously infected.
Chlorantraniliprole, the name of Chorarianilprole in England, acts on a ryanodine receptor of insects to excessively release calcium ions stored in smooth muscle cells and striated muscle cells, causes the weakening of the muscle regulation function of the insects, influences the behavior of the insects, and enables the insects to stop eating quickly and finally die. The plant growth regulator has strong permeability and systemic conductivity, and medicaments entering plants are conducted to other parts without being applied along xylem, so that the new tissues are protected; stomach toxicity is the main component, and contact killing is the secondary component; long lasting period and rain wash resistance. The product is mainly used for preventing and controlling rice pests at present, and particularly has special effect on pests with resistance to other rice insecticides, such as cnaphalocrocis medinalis guenee, chilo suppressalis, tryporyza incertulas and sesamophora inferens guenee, and also has good prevention and control effect on gall midge, weevil and weevil.
The plutella xylostella belongs to the plutella family of lepidoptera, is distributed in all parts of the country in China, and is one of the most common and serious pests in all provinces in south. In recent years, the resistance of diamondback moths is enhanced, and the damage is gradually serious. The diamondback moth is damaged by stripping or silkworm eating leaves by larvae, gnaws mesophyll by early instar insects, remains epidermis and forms a transparent spot on the leaf of the diamondback moth; the 3-4 instar larva eat the leaves into holes and notches, and the leaves become netted in severe cases.
Disclosure of Invention
The invention aims to provide an insecticidal composition for preventing and controlling spinach plutella xylostella.
The technical scheme of the invention is as follows:
an insecticidal composition for preventing and controlling spinach diamondback moth is characterized in that: the insecticidal composition is composed of fenpropathrin, chlorantraniliprole and an auxiliary agent, and is prepared into a suspending agent, wherein the weight ratio of the fenpropathrin to the chlorantraniliprole is 6-1 to 4, the preferable weight ratio is 6.
Furthermore, the content of effective active ingredients of the fenpropathrin and the chlorantraniliprole is 100 g/L to 600 g/L; the content of the effective active ingredients is preferably 150 g/L-400 g/L; the optimum content of active ingredient is 250 g/l.
Further, the auxiliary agent is selected from one or more of a dispersing agent, a wetting agent, an antifreezing agent, a preservative, a defoaming agent, a pH regulator, a thickening agent and water.
Further, the auxiliary agent in the insecticidal composition is selected from one or more of a dispersing agent, a wetting agent, an antifreezing agent, a preservative, an antifoaming agent, a pH regulator, a thickening agent and water.
The dispersing agent is selected from one or more of alkyl naphthalene formaldehyde condensate sulfonate, alkylphenol polyoxyethylene ether phosphate, alkylphenol polyoxyethylene ether sulfonate, phenethyl phenol polyoxyethylene ether phosphate, alkyl polyoxyethylene ether sulfonate, polyoxyethylene polyoxypropylene ether block copolymer, nekal, dodecyl polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether phosphate, nonylphenol polyoxyethylene ether phosphate, naphthalenesulfonic acid formaldehyde condensate sodium salt block copolymer, comb-type polycarboxylate, sodium polycarboxylate and lignosulfonate; the wetting agent is selected from one or more of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, phenethyl phenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate, alkyl naphthalene sulfonate, alkylphenol formaldehyde resin polyoxyethylene ether, triphenyl ethylphenol polyoxypropylene polyoxyethylene block polymer, lauryl sodium sulfate, styrylphenol formaldehyde resin propylene oxide block polyether, castor oil polyoxyethylene ether, fatty alcohol polyoxyethylene ether, alkyl glycoside and fatty alcohol polyoxyethylene ether sodium sulfonate; the antifreezing agent is one or more selected from ethylene glycol, propylene glycol, glycerol, urea, polyethylene glycol and sorbitol; the preservative is sodium benzoate; the defoaming agent is a silicone defoaming agent, a C10-20 saturated fatty acid compound, a C8-10 fatty alcohol, hexanol, butanol and octanol; the pH regulator is selected from one or more of glacial acetic acid, citric acid and triethanolamine; the thickening agent is selected from one or more of xanthan gum, magnesium aluminum silicate, white carbon black, polyvinyl alcohol, carboxymethyl cellulose, carboxyethyl cellulose and methyl cellulose.
Further, the preparation method of the insecticidal composition comprises the steps of firstly putting the auxiliary agent, the active ingredient and water into a stirring tank for high-speed shearing, and forming a primary dispersion liquid after full dispersion; conveying the mixture to a sand mill through a diaphragm pump for crushing, adjusting the feeding speed of the sand mill, and confirming that the granularity meets the requirement; and finally, conveying the slurry into a preparation kettle, adding a thickening agent and a defoaming agent, adjusting the viscosity of the material, and sampling for quality detection to obtain a finished product.
Furthermore, the dosage of the active ingredients of the insecticidal composition is 53.55 to 89.25 grams per hectare.
The insecticidal composition comprises the following components in percentage by weight when being prepared into a suspending agent: fenpropathrin 2-51%, chlorantraniliprole 2-48%, dispersant 1-10%, wetting agent 1-10%, defoaming agent 0.01-2%, thickening agent 0.2-2%, antifreezing agent 0-10%, preservative 0-1%, pH regulator 0-2% and water in balance.
The suspending agent of the invention has the main technical indexes that:
compared with the prior art, the composition of the invention has the following beneficial effects: (1) Compared with a single agent, the composition has obvious synergy on the spinach diamond back moth, and obviously improves the control effect; (2) The pesticide has low toxicity and high efficiency, reduces the dosage of the pesticide, reduces the residual quantity of the pesticide on crops, and has short safe interval period; (3) both quick-acting and long-acting.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to limit the scope of the present invention.
Firstly, adding the auxiliary agent, fenpropathrin, chlorantraniliprole and water into a stirring tank, shearing at a high speed, and forming a primary dispersion liquid after full dispersion; conveying the mixture to a sand mill through a diaphragm pump for crushing, adjusting the feeding speed of the sand mill, and confirming that the granularity meets the requirement; and finally, conveying the slurry into a preparation kettle, adding a thickening agent and a defoaming agent, adjusting the viscosity of the material, and sampling for quality detection to obtain a finished product.
Application example 1
Example 1 fenpropathrin-chlorantraniliprole suspension concentrate 250g/l
210.53 g of 92% fenpropathrin technical material, 52.63g of 95% chlorantraniliprole technical material, 20 g of naphthalenesulfonic acid formaldehyde condensation product sodium salt block copolymer, 40 g of lignosulfonate, 40 g of triphenylethylphenol polyoxypropylene polyoxyethylene block polymer, 20 g of sodium dodecyl sulfate, 6 g of C8-10 fatty alcohol, 13 g of xanthan gum, 20 g of glycerol, 20 g of sodium benzoate and adding water to 1000 g to prepare 250g/L fenpropathrin-chlorantraniliprole suspending agent.
Example 2 250g/l fenpropathrin-chlorantraniliprole suspension
210.53 g of 92% fenpropathrin technical material, 52.63g of 95% chlorantraniliprole technical material, 17g of fatty alcohol polyoxyethylene ether phosphate, 53 g of nonylphenol polyoxyethylene ether phosphate, 20 g of styryl phenol formaldehyde resin propylene oxide block polyether, 50g of alkyl sulfate, 5g of silicone compound, 35g of urea, 15 g of polyethylene glycol, 18 g of magnesium aluminum silicate, 8 g of sodium benzoate and water added to 1000 g to prepare 250g/L fenpropathrin-chlorantraniliprole suspending agent.
Example 3 fenpropathrin-chlorantraniliprole suspension concentrate 250g/l
210.53 g of 92% fenpropathrin technical, 52.63g of 95% chlorantraniliprole technical, 30 g of alkyl naphthalene formaldehyde condensate sulfonate, 50g of dodecyl polyoxyethylene ether phosphate, 40 g of phenethyl phenol polyoxyethylene ether phosphate, 30 g of alkyl glycoside, 3g of C10-20 saturated fatty acid compound, 40 g of glycol, 6 g of carboxyethyl cellulose, 6 g of white carbon black, 3g of glacial acetic acid and adding water to 1000 g to prepare 250g/L fenpropathrin-chlorantraniliprole suspending agent.
Example 4 Per liter fenpropathrin-Chlorantraniliprole suspension
210.53 g of 92% fenpropathrin technical, 52.63g of 95% chlorantraniliprole technical, 25g of alkyl polyoxyethylene ether sulfonate, 40 g of phenethyl phenol polyoxyethylene ether phosphate, 60 g of castor oil polyoxyethylene ether, 7g of silicone defoamer, 15 g of carboxymethyl cellulose, 5g of sodium benzoate and water added to 1000 g to prepare 2500 g/L fenpropathrin-chlorantraniliprole suspending agent.
Example 5 g/L fenpropathrin-chlorantraniliprole suspension
434.78 g of 92% fenpropathrin original drug, 210.53 g of 95% chlorantraniliprole original drug, 35g of alkylphenol polyoxyethylene ether phosphate, 35g of polyoxyethylene polyoxypropylene ether block copolymer, 40 g of sodium dodecyl sulfate, 30 g of alkylphenol formaldehyde resin polyoxyethylene ether, 13 g of silicone defoamer, 25g of sorbitol, 30 g of sodium benzoate and water which are added to 1000 g to prepare 600 g/L fenpropathrin-chlorantraniliprole suspending agent.
Example 6 fenpropathrin-chlorantraniliprole suspension concentrate 400 g/l
347.83 grams of 92% fenpropathrin technical product, 84.21 grams of 95% chlorantraniliprole technical product, 60 grams of sodium polycarboxylate, 20 grams of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, 60 grams of alkyl glycoside, 5 grams of octanol, 15 grams of glycerol, 30 grams of urea, 15 grams of white carbon black, 8 grams of citric acid and water are added to 1000 grams to prepare 400 grams of fenpropathrin-chlorantraniliprole suspending agent per liter.
Example 7 fenpropathrin-chlorantraniliprole suspension concentrate 150 g/l
108.70 g of 92% fenpropathrin original drug, 52.63g of 95% chlorantraniliprole original drug, 30 g of alkylphenol polyoxyethylene ether phosphate, 25g of comb-type polycarboxylate, 25g of alkyl naphthalene sulfonate, 25g of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, 8 g of C8-10 fatty alcohol, 8 g of polyvinyl alcohol, 30 g of propylene glycol, 5g of sodium benzoate and adding water to 1000 g to prepare 150 g/L fenpropathrin-chlorantraniliprole suspending agent.
Example 8 fenpropathrin-chlorantraniliprole suspension concentrate 100 g/l
21.74 grams of 92 percent fenpropathrin technical material, 84.21 grams of 95 percent chlorantraniliprole technical material, 60 grams of alkylphenol polyoxyethylene ether sulfonate, 30 grams of fatty alcohol polyoxyethylene ether, 30 grams of alkyl sulfonate, 5 grams of defoaming agent of C10-20 saturated fatty acid compounds, 15 grams of magnesium aluminum silicate, 5 grams of methyl cellulose, 5 grams of sodium benzoate and 1000 grams of water are added to prepare 100 grams of ion pump
Fenpropathrin-chlorantraniliprole suspending agent.
The second application example is implemented: safety test report of 250g/L fenpropathrin-chlorantraniliprole suspending agent on spinach
1 basic conditions of the test
1.1 purpose of the test
Under indoor conditions, the safety of 250g/L of fenpropathrin-chlorantraniliprole suspending agent provided by Shaanxi Wilqi crop protection company Limited on spinach is evaluated, and scientific basis is provided for registration and use of the suspending agent on spinach.
1.2 basis of experiment
Evaluation criteria for safety of agricultural chemicals to crops part 1: indoor test method for crop safety evaluation of fungicides and insecticides (NY/T1965.1-2010)
1.3 test site
Xi' an city of Shanxi province
2 conditions of the test
2.1 selection of crops and cultivars
And (3) test crops: spinach, variety: huabo No. 1, jieheng 40, bingmeiren
3 test agent
250g/l fenpropathrin-chlorantraniliprole suspending agent (fenpropathrin 200 g/l, chlorantraniliprole 50 g/l)
4 test design and arrangement
4.1 design of the experiment
TABLE 1 test design of test agents
4.2 methods of application
4.2.1 methods of use: spray mist
4.2.2 dosing devices: quantitative sprayer
4.2.3 application time and frequency
The test is carried out by applying the spinach for 1 time in 2018, 9, 15 and 15 days, wherein the spinach is in 2-3 true leaf stages.
5 data investigation and statistical analysis
5.1 investigation time and method
Observing whether the treated leaves have phytotoxicity to crops after 7, 14 and 21 days, and mainly observing whether the leaves have symptoms such as discoloration, necrosis, wilting, deformity and the like; spinach plant heights were recorded before and 21 days after drug administration.
5.2 growth Rate inhibition survey
Growth rate:
in the formula:
r: growth rate in millimeters per day (mm/d);
l: the height of the new plant is in millimeters (mm);
d: is time in days (d).
Growth rate inhibition rate:
in the formula:
R I : growth rate inhibition (%);
R CK : blank control growth rate;
R r : the agent treats the growth rate.
6 analysis of results
TABLE 2 Effect of 250g/l fenpropathrin-chlorantraniliprole suspension on spinach growth (Hua spinach No. 1)
TABLE 3 influence of 250g/l fenpropathrin-chlorantraniliprole suspension on spinach growth (Jiesheng 40)
TABLE 4 influence of 250g/l fenpropathrin-chlorantraniliprole suspension on spinach growth (iced beauty)
7 test summary
The safety of 250g/L of fenpropathrin-chlorantraniliprole suspending agent to test crop spinach is determined by a spinach 2-3 leaf-period spraying method, and the test result shows that: 250g/l fenpropathrin-chlorantraniliprole suspending agent is sprayed at the 2-3 true leaf stages of the spinach to ensure the safe growth of the plants of three spinach varieties, namely Chinese spinach No. 1, jiesheng No. 40 and Bingmeiren. Under the recommended dosage, twice or four times, the spinach grows normally, leaves have no symptoms such as discoloration, necrosis, wilting, deformity and the like, and no phytotoxicity is generated during the test.
Application example three:
indoor joint toxicity determination experiment of chlorantraniliprole, fenpropathrin and mixed spinach diamondback moth
Purpose of the test
The toxicity of fenpropathrin and chlorantraniliprole and different mixed combinations thereof on spinach plutella xylostella is determined and evaluated, the suitability of the fenpropathrin and the chlorantraniliprole is determined, and scientific basis is provided for the research and development of mixed preparations of the fenpropathrin and the chlorantraniliprole.
2 design of the experiment
2.1 test Agents
Fenpropathrin (fenpropathrin) 92% of raw pesticide; chlorantraniliprole (chlorantraniliprole) 95.3% of original drug.
2.2 pharmaceutical preparation
Weighing 0.0217g fenpropathrin 92% original drug, dissolving with 1mL DMF, adding 0.2mL Tween80 emulsifier, stirring well, adding 198.8mL clear water to prepare 100mg/L mother liquor, diluting with water containing 0.1% Tween80 emulsifier to 50, 25, 12.5, 6.25 and 3.125mg/L by 2 times proportion, and performing test for 6 concentrations.
Weighing 0.0105g 95.3% chlorantraniliprole, dissolving with 0.5mL of DMF, adding 0.2mL of Tween80 emulsifier, stirring, adding 99.3mL of clear water to prepare 100mg/L mother liquor, adding 96mL of water containing 0.1% Tween80 emulsifier to prepare 4mg/L test solution, diluting with water containing 0.1% Tween80 emulsifier to 2, 1, 0.5, 0.25 and 0.125mg/L according to 2 times proportion, and testing at 6 concentrations.
According to the proportion of 1:4, 1: 1, 2:1, 4:1 and 6:1 of fenpropathrin and chlorantraniliprole, 0.8 mL, 5mL, 6.67 mL, 16 mL and 17.14mL of fenpropathrin mother liquor are respectively measured, 3.2 mL, 5mL, 3.33 mL, 4mL and 2.86mL of chlorantraniliprole mother liquor are correspondingly measured, the fenpropathrin mother liquor and the chlorantraniliprole mother liquor are mixed, water with emulsifier is added to 100mL, test solutions of 4mg/L, 10 mg/L, 20mg/L and 20mg/L are respectively prepared, and the test solutions are respectively diluted to 6 concentrations by using water with 0.1 percent tween80 emulsifier according to 2 times proportion.
A blank control was prepared by adding 99mL of water containing 0.1% Tween80 emulsifier to a beaker containing 0mL of DMF.
3 Experimental methods
3.1 test protocol
Referring to 'evaluation of pesticide biological activity SOP' and a standard method for biological measurement NY/T1154.14-2008, a leaf-soaking disc method is adopted. Breaking spinach leaves into leaf dishes by using a puncher with the diameter of 18mm, soaking the leaf dishes in test reagent liquid for 10 seconds, taking out the leaf dishes, airing naturally, putting the leaf dishes into a culture dish (with the diameter of 90 mm) filled with moisturizing filter paper, putting 5 leaf dishes into each dish, airing naturally, selecting 3-year larvae of the diamondback moth hungry for 4 hours to put into the culture dish, not less than 10 larvae per dish, repeating for 4 times, finishing treatment, covering a dish cover, and placing the dish cover in an observation room for culture.
3.2 treatment with pharmaceutical Agents
Selecting apples with basically consistent size and maturity (the diameter of breast of the apple is 7-8cm, the weight is 200 g) without application, cleaning and drying, and performing fruit soaking in real time, firstly processing for comparison, and sequentially performing from low concentration to high concentration. Soaking in the medicinal liquid for 10s, taking out, and naturally drying. Then placing the apples into a beaker, inoculating each apple with 15-head 3-year-old peach fruit borer larvae, repeating 2 apples each, sealing by using gauze, and placing the apples in an artificial constant-temperature insect-breeding room with the temperature of 25 +/-1 ℃, the relative humidity of 60-70% and the light cycle of 14 (L: D) for breeding.
4 data investigation and statistical analysis
4.1 investigation time and method
And (4) after 72h, detecting the death condition of the test insects, and recording, wherein the death judgment standard of the test insects is that no response is calculated when the tweezers lightly contact the test insects.
4.2 evaluation method of synergistic Effect
The co-toxicity coefficient (CTC) of each mixed combination is obtained by adopting a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw measurement standard method NY/T1154.7-2006. Generally, the co-toxicity coefficient is 120 or more, which means a synergistic effect, 80 or less is an antagonistic effect, and is an additive effect between 80 and 120. The co-toxicity coefficient is calculated as follows
Theoretical virulence index of mixture (TTI) = virulence index of agent a × percent of agent a in mixture (%) + virulence index of agent B × percent of agent B in mixture (%)
5 results of the experiment
TABLE 5 toxicity test results of fenpropathrin and chlorantraniliprole in different ratios for spinach diamondback moth
As can be seen from Table 5, fenpropathrin and chlorantraniliprole are mixed in the ratio of 1:4, 1: 1, 2:1, 4:1 and 6:1 to exhibit synergistic effects on diamondback moths except 1: 1, wherein the synergistic effect of 4:1 is most obvious. Therefore, the optimal ratio of fenpropathrin to chlorantraniliprole can be seen as 4:1 only from the comparison of synergistic toxicity.
Application example four: example 1 field efficacy test for controlling spinach plutella xylostella
Purpose of the test
The 250g/l fenpropathrin-chlorantraniliprole suspending agent developed by the applicant is verified to have the control effect and the safety on the spinach diamond back moth, the field dosage and the application technology are determined, and a scientific basis is provided for pesticide registration.
2 basis of experiment
The test is carried out according to the standard of 'pesticide registration field efficacy test quality management standard' (NY/T2885-2016) 'pesticide field efficacy test standard (GB/T17980.13-2000) for controlling Lepidoptera larvae of cruciferous vegetables) by pesticide, and' pesticide field efficacy test standard operating procedure (SOP-I-009) 'for controlling Lepidoptera larvae of cruciferous vegetables by pesticide'.
3 site of experiment
The test is arranged at the plant protection research institute of academy of agricultural sciences in the autonomous region of Guangxi Zhuang nationality.
Selection of test subjects, crops and varieties
Test subjects: spinach diamondback moth (Plutella xylostella) is in a low-age larva emergence stage when applied, and the number of insects is large; and (3) test crops: the test crop is spinach, and the growth is good.
5 test design and arrangement
5.1 dosage and numbering
TABLE 6 test design of test agents
5.2 application time and frequency
The pesticide is applied in the low-age larva emergence period of the spinach plutella xylostella, the leaf backs and the leaf backs of the leaves are uniformly sprayed, and the blank control is sprayed with clean water with the same amount. The test only applies the medicine once, and the application time is 2020 years, 6 months and 7 days.
5.3 Capacity of use
The water consumption was 750 l/ha.
5.4 investigation time and number of surveys
The study was conducted 3 times on the 3 rd and 7 th days before and after the drug administration.
5.5 method for calculating drug efficacy
6 results of the experiment
TABLE 7 EXAMPLE 1 results of field efficacy test for controlling spinach diamond back moth
Note: the control (%) in the table is the average value of each repetition; in the table, the Duncan new repolarization method of the same capital and small letters does not have significant difference on the level of 1% and 5% respectively through DPS (v 7.05) random block single factor test statistical analysis, and the Duncan new repolarization method is different.
As can be seen from table 7, in example 1, 250g/L of fenpropathrin-chlorantraniliprole suspending agent has good dispersibility in water, the quick-acting property of the agent is general, the lasting effect is good, within the test dose, within 3 days after the application, the control effects of 250g/L of fenpropathrin-chlorantraniliprole SC active ingredients 53.55, 71.4 and 89.25 g/ha of the test agent on spinach diamondback moth are respectively as follows: 84.54 percent, 86.70 percent and 91.05 percent. The control effects of the control agent 20% fenpropathrin EC 135 g/hectare and the control agent 5% chlorantraniliprole SC 41.25 g/hectare are respectively as follows: 84.13 percent and 83.94 percent. The test results are tested and analyzed by a DUNCAN new double-pole difference method, the control effects of the 250g/L fenpropathrin-chlorantraniliprole SC active ingredients 53.55 and 71.4 g/hectare of the test medicament are equivalent to the control effects of two contrast medicaments, namely 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare, and the difference is not obvious. The control effect of 250g/L of fenpropathrin-chlorantraniliprole SC active ingredient 89.25 g/hectare of the test medicament is remarkably higher than the control effects of 20 percent of fenpropathrin EC 135 g/hectare and 5 percent of chlorantraniliprole SC 41.25 g/hectare of two control medicaments.
7 days after the pesticide is applied, the control effects of 53.55, 71.4 and 89.25 g/hectare of the effective components of 250g/L fenpropathrin-chlorantraniliprole SC of the test medicament on the spinach plutella xylostella are respectively as follows: 86.45%, 89.08% and 93.25%. The control effects of the control agent 20% fenpropathrin EC 135 g/hectare and the control effect of the control agent 5% chlorantraniliprole SC 41.25 g/hectare are respectively as follows: 86.58 percent and 85.89 percent. The test results are tested and analyzed by a DUNCAN new double-pole difference method, the control effects of the 250g/L fenpropathrin-chlorantraniliprole SC active ingredients 53.55 and 71.4 g/hectare of the test medicament are equivalent to the control effects of two control medicaments of 20% of fenpropathrin EC 135 g/hectare and 5% of chlorantraniliprole SC 41.25 g/hectare, and the difference is not obvious. The control effect of 89.25 g/hectare of effective components of 250g/L of fenpropathrin-chlorantraniliprole SC of the test medicament is obviously higher than that of 20 percent of fenpropathrin EC 135 g/hectare and 5 percent of chlorantraniliprole SC 41.25 g/hectare of two control medicaments.
Application example five: example 2 field efficacy test for controlling spinach plutella xylostella
The purpose of the experiment, the experimental basis, the design and the dosage of the medicament and the calculation method of the medicament effect are the same as the fourth application example.
1 site of experiment
The test is arranged in Wu cave city, hubei province.
Selection of test subjects, crops and varieties
Test subjects: spinach diamondback moth;
and (3) test crops: the test crop is spinach, and the variety is spike.
3 time and frequency of application
The medicine is applied once in 11 months and 10 days in 2019.
4 capacity of use
The water consumption is 45 liters per 667 square meter, 675 liters per hectare.
5 investigation time and number of surveys
Base number survey: before application; and (4) second investigation: 1 day after application; and (3) third investigation: 3 days after the application;
the fourth survey: 7 days after application.
6 results of the experiment
TABLE 8 example 2 test results of field drug effect test for preventing and treating spinach plutella xylostella
Note: the control (%) in the table above is the average of each repetition.
As can be seen from table 8, the 250g/l fenpropathrin-chlorantraniliprole suspension concentrate of the test agent of example 2 had good dispersibility in water, and the agent had a general quick-acting property and a good persistence. The test medicament 250g/L of fenpropathrin-chlorantraniliprole suspending agent has good quick-acting performance on the spinach diamond back moth, the test medicament 15mL/667 square meter is treated, 20mL/667 square meter is treated, 25mL/667 square meter is treated, the control effect on the spinach diamond back moth is between 87.3% and 100% after the treatment for 3 days after the application, the control medicament 20% of fenpropathrin emulsifiable concentrate 45mL/667 square meter is treated, and the control effect on the spinach diamond back moth is respectively 79.3% and 91.9% after the treatment for 5% of chlorantraniliprole suspending agent 55mL/667 square meter.
The test medicament 250g/L of fenpropathrin-chlorantraniliprole suspending agent has excellent control effect on the spinach diamondback moth, and the control effect of each treatment of the test medicament 250g/L of fenpropathrin-chlorantraniliprole suspending agent on the diamondback moth imagoes reaches more than 92.1-100 percent 7 days after the application;
the analysis is carried out by applying a Duncan new repolarization method, and the result shows that 7 days after the application, the difference between the control effects of a test medicament 250g/L of a fenpropathrin-chloromycetin benzamide suspending agent for treating 15mL/667 square meter and a test medicament for treating 25mL/667 square meter on spinach plutella xylostella is obvious, the difference between the control effects of the test medicament 20mL/667 square meter and a control medicament 20% of a fenpropathrin missible oil 45mL/667 square meter on spinach plutella xylostella is obvious, the control effects of the test medicament are better, and the difference between the control effects of the test medicament and the control effects of the test medicament for treating 5% of the chloromycetin benzamide suspending agent for treating 55mL/667 square meter on spinach plutella xylostella is not obvious.
Application example six: example 3 test of field efficacy in controlling spinach plutella xylostella
The purpose of the experiment, the experimental basis, the design and the dosage of the medicament and the calculation method of the medicament effect are the same as the fourth application example.
1 site of experiment
The experiment was arranged in the south of the Yangtze river of south Ningning, guangxi.
Selection of test subjects, crops and varieties
Test subjects: spinach diamond back moth (Plutella xylostella), is the low-age larva emergence period when applying the drug, the worm quantity is more;
and (3) test crops: is spinach.
3 time and frequency of application
The test only applies the medicine once, and the application time is 2020 years, 6 months and 7 days.
4 capacity of use
The water adding amount of the test liquid medicine is 750 liters per hectare, and the water consumption of each community is 3 liters.
5 investigation time and number of surveys
The study was conducted 3 times on the 3 rd and 7 th days before and after the drug administration.
6 results of the experiment
TABLE 9 EXAMPLE 3 field efficacy test results for spinach diamond back moth control
Note: the control (%) in the table is the average value of each repetition; the Duncan new double-pole difference method in the table is not significantly different at 1% and 5% levels respectively by the statistical analysis of the single factor test of the DPS (v 7.05) random block of the same case letter, and is significantly different if different.
As can be seen from Table 9, the control effects of 250g/L (23.8%) of fenpropathrin-chlorantraniliprole SC in example 3 on Plutella xylostella 3 days after application are respectively 53.55 g/ha, 71.4 g/ha and 89.25 g/ha as effective components: 84.26%, 86.43% and 90.23%. The control effects of the control agent 20% fenpropathrin EC 135 g/hectare and the control agent 5% chlorantraniliprole SC 41.25 g/hectare are respectively as follows: 83.83 percent and 83.69 percent. The test results are tested and analyzed by a DUNCAN new double-pole difference method, the control effects of the 250g/L (23.8) fenpropathrin-chlorantraniliprole SC active ingredients of the test medicament of 53.55 g/hectare and 71.4 g/hectare are equivalent to the control effects of two control medicaments of 20 percent of fenpropathrin EC 135 g/hectare and 5 percent of chlorantraniliprole SC 41.25 g/hectare, and the difference is not obvious. The control effect of 89.25 g/hectare of effective components of 250g/L (23.8%) of fenpropathrin-chlorantraniliprole SC of the test medicament is remarkably higher than the control effects of 20% of fenpropathrin EC 135 g/hectare and 5% of chlorantraniliprole SC 41.25 g/hectare of two control medicaments.
7 days after the application, the control effects of 250g/L (23.8%) of the test agent of example 3 on the cabbage diamondback moth are respectively 53.55 g/hectare, 71.4 g/hectare and 89.25 g/hectare of the active ingredient of the fenpropathrin-chlorantraniliprole SC: 86.45%, 87.84% and 91.99%. The control effects of the control agent 20% fenpropathrin EC 135 g/hectare and the control effect of the control agent 5% chlorantraniliprole SC 41.25 g/hectare are respectively as follows: 85.29 percent and 85.89 percent. The test results are tested and analyzed by a DUNCAN new double-pole difference method, the control effects of the 250g/L (23.8) fenpropathrin-chlorantraniliprole SC active ingredients of the test medicament of 53.55 g/hectare and 71.4 g/hectare are equivalent to the control effects of two control medicaments of 20 percent of fenpropathrin EC 135 g/hectare and 5 percent of chlorantraniliprole SC 41.25 g/hectare, and the difference is not obvious. The control effect of 250g/L (23.8%) of fenpropathrin-chlorantraniliprole SC active ingredient 89.25 g/hectare of the test medicament is obviously higher than the control effects of 20% of fenpropathrin EC 135 g/hectare and 5% of chlorantraniliprole SC 41.25 g/hectare of the two control medicaments.
Application example seven: example 4 test of field efficacy in controlling spinach plutella xylostella
The purpose of the experiment, the experimental basis, the design and the dosage of the medicament and the calculation method of the medicament effect are the same as the fourth application example.
1 site of experiment
The experiment is arranged in Yangling region of Shaanxi province.
Selection of test subjects, crops and varieties
Test subjects: spinach diamondback moth;
test crops: spinach, variety Huabo No. 1.
3 time and frequency of application
The medicine is applied to the spinach plutella xylostella low-age larvae in the first full-age period, manual backpack type spraying is adopted, the working pressure is 0.3-0.4Mpa, the diameter of a spraying hole is 0.7mm, the medicine is applied only once in the experiment, and the application time is 2020 years, 5 months and 10 days.
4 capacity of use
The water adding amount of the test liquid medicine is 750 liters per hectare, and the water consumption of each community is 3 liters.
5 investigation time and number of surveys
The population base number is investigated before the application of the medicine, and the population number is investigated 1d, 3d and 7d after the application of the medicine.
6 results of the experiment
TABLE 10 EXAMPLE 4 field efficacy test results for spinach diamond back moth control
Note that lower case letters indicate differences at the 0.05 level between treatments, and upper case letters indicate differences at the 0.01 level between treatments.
As can be seen from table 10, the control effects of five treatments of 250g/l fenpropathrin-chlorantraniliprole suspending agent 53.55g (a.i.)/ha, 71.4g (a.i.)/ha, 89.25g (a.i.)/ha of example 4 and control agent 20% fenpropathrin emulsifiable concentrate 135g (a.i.)/ha, 5% chlorantraniliprole suspending agent 41.25g (a.i.)/ha at 1d after application are 82.49%, 91.22%, 93.65%, 90.34%, 70.29%, respectively; the control effects of the composition in 3d after application are respectively 87.00%, 91.33%, 94.70%, 90.30% and 80.26%; the control effect of 7 days after the pesticide is applied is 90.63%, 98.23%, 99.04%, 94.24% and 90.30%.
Analysis of variance showed that: five dose treatments of 53.55g (a.i.)/ha, 71.4g (a.i.)/ha, 89.25g (a.i.)/ha and a control medicament of 20% fenpropathrin emulsifiable concentrate 135g (a.i.)/ha and 5% of chlorantraniliprole suspending agent 41.25g (a.i.)/ha after application of 1d, 7d,250 g/L fenpropathrin-chlorantraniliprole suspending agent are remarkably different on the 0.05 and 0.01 levels.
The result of DMRT test shows that: at 1d after the application, on the 0.05 level, the control effect of 250g/L of fenpropathrin-chlorantraniliprole suspending agent is not significantly different from that of the control agent of 41.25g (a.i.) of 5% chlorantraniliprole suspending agent/ha treatment, and the control effect is not as different from that of 89.25g (a.i.) of the control agent; on the 0.01 level, the control effects of 250g/L fenpropathrin-chlorantraniliprole suspending agent 71.4, 89.25g (a.i.) per ha treatment and the control effect of control agent 20% fenpropathrin emulsifiable concentrate 135g (a.i.) per ha treatment are not obviously different, and the control effects are all better than the control effects of control agent 5% chlorantraniliprole suspending agent 41.25g (a.i.) per ha treatment.
At the 7d after the application, on the level of 0.05, no significant difference exists between the control effects of 250g/L of fenpropathrin-chlorantraniliprole suspending agent 71.4 and 89.25g (a.i.)/ha treatment, and the control effects are better than those of 53.55g (a.i.)/ha treatment and the control effects of 20% of fenpropathrin emulsifiable solution and 5% of chlorantraniliprole suspending agent treatment; at the 0.01 level, the control effect of 250g/l fenpropathrin-chlorantraniliprole suspending agent 53.55g (a.i.) per ha treatment is not significantly different from the control effect of the control agent 20% fenpropathrin emulsifiable concentrate and 5% chlorantraniliprole suspending agent, and the control effect is not as good as that of 89.25g (a.i.) per ha treatment.
In a word, 250g/L (23.8%) of fenpropathrin-chlorantraniliprole SC as the reagent has good effect on preventing and controlling Plutella xylostella, and has the advantages of good quick action, long lasting period and high safety.
Claims (8)
1. An insecticidal composition for controlling spinach diamond back moth, which is characterized in that: the insecticidal composition consists of fenpropathrin, chlorantraniliprole and an auxiliary agent, and is prepared into a suspending agent, wherein the weight ratio of the fenpropathrin to the chlorantraniliprole is (6) - (1).
2. The insecticidal composition of claim 1, wherein: the weight ratio of fenpropathrin to chlorantraniliprole is (6).
3. The insecticidal composition of claim 2, wherein: the weight ratio of fenpropathrin to chlorantraniliprole is 4.
4. An insecticidal composition according to any one of claims 1 to 3, characterized in that: the content of effective active ingredients of the fenpropathrin and the chlorantraniliprole is 100 g/L-600 g/L.
5. The insecticidal composition according to claim 4, wherein: the content of effective active ingredients of the fenpropathrin and the chlorantraniliprole is 150 g/L-400 g/L.
6. The insecticidal composition of claim 5, wherein: the content of the effective active ingredients of the fenpropathrin and the chlorantraniliprole is 250 g/L.
7. The insecticidal composition of claim 1, wherein: the auxiliary agent is selected from one or more of dispersing agent, wetting agent, antifreezing agent, preservative, defoaming agent, pH regulator, thickening agent and water.
8. An insecticidal composition according to any one of claims 1 to 7, characterized in that: the dosage of the active ingredients of the insecticidal composition is 53.55 to 89.25 g/hectare.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101755819A (en) * | 2009-09-24 | 2010-06-30 | 张志高 | Insecticidal composition having chlorantraniliprole |
| CN103907634A (en) * | 2013-01-07 | 2014-07-09 | 陕西汤普森生物科技有限公司 | Insect disinfestation composition containing tetrachlorantraniliprole and pyrethroid |
| CN107494585A (en) * | 2017-09-07 | 2017-12-22 | 广东省农业科学院植物保护研究所 | A kind of Pesticidal combination containing effective cypermethrin and Rynaxypyr |
| IN201621027690A (en) * | 2016-08-12 | 2018-02-16 | Pesticidal composition of methoxyfenozide and insecticides | |
| WO2020174499A1 (en) * | 2019-02-28 | 2020-09-03 | Willowood Chemicals Private Limited | Synergistic insecticidal compositions |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101755819A (en) * | 2009-09-24 | 2010-06-30 | 张志高 | Insecticidal composition having chlorantraniliprole |
| CN103907634A (en) * | 2013-01-07 | 2014-07-09 | 陕西汤普森生物科技有限公司 | Insect disinfestation composition containing tetrachlorantraniliprole and pyrethroid |
| IN201621027690A (en) * | 2016-08-12 | 2018-02-16 | Pesticidal composition of methoxyfenozide and insecticides | |
| CN107494585A (en) * | 2017-09-07 | 2017-12-22 | 广东省农业科学院植物保护研究所 | A kind of Pesticidal combination containing effective cypermethrin and Rynaxypyr |
| WO2020174499A1 (en) * | 2019-02-28 | 2020-09-03 | Willowood Chemicals Private Limited | Synergistic insecticidal compositions |
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