CN115281199B - Insecticidal composition for preventing and controlling spinach plutella xylostella - Google Patents
Insecticidal composition for preventing and controlling spinach plutella xylostella Download PDFInfo
- Publication number
- CN115281199B CN115281199B CN202210784429.9A CN202210784429A CN115281199B CN 115281199 B CN115281199 B CN 115281199B CN 202210784429 A CN202210784429 A CN 202210784429A CN 115281199 B CN115281199 B CN 115281199B
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- China
- Prior art keywords
- fenpropathrin
- chlorantraniliprole
- test
- agent
- polyoxyethylene ether
- Prior art date
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- 241000219315 Spinacia Species 0.000 title claims abstract description 56
- 235000009337 Spinacia oleracea Nutrition 0.000 title claims abstract description 55
- 241000500437 Plutella xylostella Species 0.000 title claims abstract description 51
- 239000000203 mixture Substances 0.000 title claims abstract description 21
- 230000000749 insecticidal effect Effects 0.000 title claims abstract description 20
- 239000005886 Chlorantraniliprole Substances 0.000 claims abstract description 93
- XQUXKZZNEFRCAW-UHFFFAOYSA-N fenpropathrin Chemical group CC1(C)C(C)(C)C1C(=O)OC(C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 XQUXKZZNEFRCAW-UHFFFAOYSA-N 0.000 claims abstract description 93
- PSOVNZZNOMJUBI-UHFFFAOYSA-N chlorantraniliprole Chemical compound CNC(=O)C1=CC(Cl)=CC(C)=C1NC(=O)C1=CC(Br)=NN1C1=NC=CC=C1Cl PSOVNZZNOMJUBI-UHFFFAOYSA-N 0.000 claims abstract description 81
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- 239000003795 chemical substances by application Substances 0.000 claims description 25
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Classifications
-
- 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
- A01N43/48—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
-
- 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
-
- 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
-
- 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)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Toxicology (AREA)
- Insects & Arthropods (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to the technical field of pesticides, and discloses an insecticidal composition for preventing and controlling spinach plutella xylostella, in particular to an insecticidal composition of fenpropathrin and chlorantraniliprole. The insecticidal composition is prepared from fenpropathrin, chlorantraniliprole and an auxiliary agent, wherein the weight ratio of the fenpropathrin to the chlorantraniliprole is 6:1-1:4. The insecticidal composition can improve the use efficiency of pesticides, improve the effect of preventing and controlling the spinach plutella xylostella, has obvious synergistic effect, reduces the use amount of pesticides, reduces the medication cost of farmers, and is beneficial to the safety and environmental protection of environment and food.
Description
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to an insecticidal composition for preventing and controlling spinach plutella xylostella.
Background
Fenpropathrin, the English name Fenpropathin, is a pyrethroid insecticidal and acaricidal agent with medium toxicity, has the effects of contact killing, stomach toxicity and certain repellent effect, and has no systemic and fumigating effects. It belongs to nerve agent, acts on nervous system of insect, and causes insect to be over excited and paralyzed to die. The pesticide has the characteristics of wide insecticidal spectrum, quick knockdown effect and long lasting period, has good control effect on a plurality of pests and a plurality of spider mites, and is particularly suitable for being used when the pests and the spider mites are concurrent.
Chlorantraniliprole acts on the ryanodine receptor of insects to cause excessive release of calcium ions stored in smooth muscle and striated muscle cells, thereby causing weak muscle regulation function of the insects, affecting the behaviors of the insects, stopping feeding rapidly and finally killing the insects. The drug has stronger permeability and systemic conductivity, and the drug entering the plant is conducted to other parts without drug application along xylem, thereby being beneficial to protecting the new tissue; stomach toxicity is the main ingredient, and the contact killing effect is secondary; long lasting period and rain wash resistance. The product is mainly used for preventing and controlling rice pests at present, and has more special effects on pests with resistance to other rice pesticides, such as cnaphalocrocis medinalis, chilo suppressalis, tryporyza incertulas and borer, and has good prevention and control on gall midge, rice weevil and rice weevil.
The plutella xylostella belongs to lepidoptera plutella xylostella, is distributed all over China, and is one of the most common and serious pests in south provinces. In recent years, the drug resistance of the plutella xylostella is enhanced, and the pest is serious. The plutella xylostella is damaged by larva peeling or predatory leaves, the primary insects gnaw mesophyll, the epidermis is remained, and a transparent spot is formed on the plutella xylostella; the 3-4-year-old larvae eat the leaves into holes and nicks, and the leaves form a net when serious.
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 plutella xylostella, which is characterized in that: the insecticidal composition is prepared from fenpropathrin, chlorantraniliprole and an auxiliary agent, wherein the weight ratio of the fenpropathrin to the chlorantraniliprole is 6:1-1:4, the preferable weight ratio is 6:1-2:1 or 1:4, and the optimal weight ratio is 4:1.
Further, the effective active ingredient content of fenpropathrin and chlorantraniliprole is 100 g/L-600 g/L; the preferable effective active ingredient content is 150 g/L to 400 g/L; the optimal active ingredient content is 250 g/l.
Further, the auxiliary agent is one or more selected from dispersing agents, wetting agents, antifreezing agents, preservatives, defoamers, PH regulators, thickening agents and water.
Further, the auxiliary agent in the insecticidal composition is selected from one or more of dispersing agent, wetting agent, antifreezing agent, preservative, defoamer, PH regulator, thickener and water.
The dispersing agent is one or more selected from 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, naphthalene sulfonic acid formaldehyde condensate sodium salt block copolymer, comb-type polycarboxylate, sodium polycarboxylate and lignin sulfonate; the wetting agent is one or more selected from 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, sodium dodecyl sulfate, styrene phenol 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 defoamer is silicone defoamer, C10-20 saturated fatty acid compound, C8-10 fatty alcohol, hexanol, butanol and octanol; the PH regulator is one or more selected from glacial acetic acid, citric acid and triethanolamine; the thickener is one or more selected from 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 adding an auxiliary agent, an active ingredient raw material and water into a stirring tank, shearing at high speed, and fully dispersing to form an initial dispersion; conveying the powder into a sand mill through a diaphragm pump for crushing, adjusting the sand milling feeding speed, and confirming that the granularity meets the requirement; and finally, conveying the slurry to a preparation kettle, adding a thickening agent and a defoaming agent, adjusting the viscosity of the materials, sampling, and performing quality detection to obtain a finished product.
Further, the dosage of the active ingredients of the insecticidal composition is 53.55-89.25 g/hectare.
The insecticidal composition is prepared into a suspending agent and comprises the following components in percentage by weight: 2 to 51 percent of fenpropathrin, 2 to 48 percent of chlorantraniliprole, 1 to 10 percent of dispersing agent, 1 to 10 percent of wetting agent, 0.01 to 2 percent of defoaming agent, 0.2 to 2 percent of thickening agent, 0 to 10 percent of antifreezing agent, 0 to 1 percent of preservative, 0 to 2 percent of PH regulator and the balance of water.
The suspending agent of the invention has the main technical indexes that:
compared with the prior art, the composition provided by the invention has the following beneficial effects: (1) Compared with a single dose, the composition has obvious synergy on the spinach plutella xylostella, and the control effect is obviously improved; (2) The pesticide is low in toxicity and high in efficiency, the pesticide dosage is reduced, the residual quantity of the pesticide on crops is reduced, and the safety interval period is short; (3) has quick and long-acting effects.
Detailed Description
The invention is further illustrated by the following examples, which are given by way of percentage, but are not limited thereto.
Firstly, adding an auxiliary agent, fenpropathrin, chlorantraniliprole and water into a stirring tank, shearing at a high speed, and fully dispersing to form an initial dispersion; conveying the powder into a sand mill through a diaphragm pump for crushing, adjusting the sand milling feeding speed, and confirming that the granularity meets the requirement; and finally, conveying the slurry to a preparation kettle, adding a thickening agent and a defoaming agent, adjusting the viscosity of the materials, sampling, and performing quality detection to obtain a finished product.
Application example one
EXAMPLE 1 250g/L fenpropathrin chloride benzamide suspending agent
210.53 g of 92% fenpropathrin original drug, 52.63g of 95% chlorantraniliprole original drug, 20 g of naphthalene sulfonic acid formaldehyde condensate sodium salt block copolymer, 40 g of lignosulfonate, 40 g of triphenyl ethylphenol polyoxypropylene polyoxyethylene block polymer, 20 g of sodium dodecyl sulfate, 6 g of C8-10 fatty alcohols, 13 g of xanthan gum, 20 g of glycerol, 20 g of sodium benzoate and 1000 g of water are added to prepare 250g/L fenpropathrin chloride benzamide suspending agent.
EXAMPLE 2 250g/L fenpropathrin chloride benzamide suspending agent
210.53 g of 92% fenpropathrin original drug, 52.63g of 95% chlorantraniliprole original drug, 17g of fatty alcohol polyoxyethylene ether phosphate, 53 g of nonylphenol polyoxyethylene ether phosphate, 20 g of styrene-based 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 sodium benzoate, 8 g of sodium benzoate and 1000 g of water are added to prepare 250g/L fenpropathrin chloride benzamide suspending agent.
EXAMPLE 3 250g/L fenpropathrin chloride benzamide suspending agent
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 ethylene glycol, 6 g of carboxyethyl cellulose, 6 g of white carbon black, 3g of glacial acetic acid and 1000 g of water are added to prepare 250g/L fenpropathrin chlorantraniliprole suspending agent.
EXAMPLE 4 250g/L fenpropathrin chloride benzamide suspending agent
210.53 g of 92% fenpropathrin original drug, 52.63g of 95% chlorantraniliprole original drug, 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 1000 g of water are added to prepare 2500 g/L of fenpropathrin chlorantraniliprole suspending agent.
EXAMPLE 5 600 g/L fenpropathrin chloride benzamide suspending agent
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 1000 g of water are added to prepare 600 g/L of fenpropathrin chlorantraniliprole suspending agent.
EXAMPLE 6 fenpropathrin-chlorantraniliprole suspending agent 400 g/L
347.83 g of 92% fenpropathrin original drug, 84.21 g of 95% chlorantraniliprole original drug, 60 g of sodium polycarboxylate, 20 g of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, 60 g of alkyl glycoside, 5g of octanol, 15 g of glycerol, 30 g of urea, 15 g of white carbon black, 8 g of citric acid and 1000 g of water are added to prepare 400 g/L fenpropathrin chlorantraniliprole suspending agent.
EXAMPLE 7 150 g/L fenpropathrin chloride benzamide suspension
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-shaped polycarboxylate, 25g of alkyl naphthalene sulfonate, 25g of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, 8 g of C8-10 fatty alcohols, 8 g of polyvinyl alcohol, 30 g of propylene glycol, 5g of sodium benzoate and 1000 g of water are added to prepare 150 g/L fenpropathrin chlorantraniliprole suspending agent.
EXAMPLE 8 100 g/L fenpropathrin chloride benzamide suspending agent
92% fenpropathrin original medicine 21.74 g, 95% chlorantraniliprole original medicine 84.21 g, alkylphenol polyoxyethylene sulfonate 60 g, fatty alcohol polyoxyethylene ether 30 g, alkyl sulfonate 30 g, C10-20 saturated fatty acid compound defoamer 5g, magnesium aluminum silicate 15 g, methyl cellulose 5g, sodium benzoate 5g, water added to 1000 g, 100 g is prepared
Fenpropathrin and chlorantraniliprole suspending agent.
Implementation example II: safety test report of 250g/L fenpropathrin/chlorantraniliprole suspending agent on spinach
1 test base case
1.1 purpose of test
Under indoor conditions, 250g/L fenpropathrin/chlorantraniliprole suspending agent provided by Shaanxi Welch crop protection Co., ltd. Is evaluated for safety of spinach, and scientific basis is provided for registration and use of the suspending agent on spinach.
1.2 test basis
Part 1 of pesticide safety evaluation criterion: indoor test method for evaluating safety of bactericide and insecticide on crops (NY/T1965.1-2010)
1.3 test sites
Shaanxi Shaoxian city district
2 test conditions
2.1 selection of crops and cultivars
Test crop: spinach, variety: north pineapple No. 1 Jiesheng 40 and ice beauty
3 test agent
250g/l fenpropathrin/chlorantraniliprole suspending agent (fenpropathrin 200 g/l, chlorantraniliprole 50 g/l)
4 test design and arrangement
4.1 test design
TABLE 1 test design of reagents for test
4.2 methods of administering drugs
4.2.1 method of use: spray mist
4.2.2 application device: quantitative sprayer
4.2.3 times and times of application
The test was carried out 1 time on 15 days of 2018, 9 months, and spinach was in 2-3 true leaf stage when administered.
5 data investigation and statistical analysis
5.1 investigation time and method
Observing whether the plant is harmful or not in 7 days, 14 days and 21 days after treatment, and mainly observing whether the leaves have symptoms such as color change, necrosis, wilting, deformity and the like; 21 days after and before the drug, the spinach plant height was recorded.
5.2 growth Rate inhibition investigation
Growth rate:
wherein:
r: growth rate in millimeters per day (mm/d);
l: plant new-born height in millimeters (mm);
d: time, in days (d).
Growth rate inhibition rate:
wherein:
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 influence of 250g/l fenpropathrin chloride benzamide suspending agent on spinach growth (Wangbi 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 (Bing Mei ren)
7 test knots
The safety of 250g/L fenpropathrin/chlorantraniliprole suspending agent to the spinach of a test crop is measured by a spinach 2-3 piece true leaf stage spraying method, and the test result shows that: spraying 250g/L fenpropathrin/chlorantraniliprole suspending agent on 2-3 pieces of spinach in the true leaf period is safe for growth of three spinach varieties of 1-spinach, 40 Jiesheng and ice American. Under the recommended dosage, twice amount and four times amount, spinach grows normally, leaves have no symptoms such as color change, necrosis, wilting, deformity and the like, and no phytotoxicity is generated during the test.
Implementation example three:
indoor combined toxicity determination experiment for chlorantraniliprole, fenpropathrin and mixed pairing spinach plutella xylostella
1 purpose of test
The suitability of the fenpropathrin and the chlorantraniliprole for the spinach plutella xylostella is determined and evaluated by measuring and evaluating the toxicity of the fenpropathrin and the chlorantraniliprole to the spinach plutella xylostella by different mixing combinations, so that scientific basis is provided for the research and development of the fenpropathrin and chlorantraniliprole mixture.
2 test design
2.1 test Agents
Fenpropathrin (fenproxarmin) 92% of the original drug; chlorantraniliprole (chlorantraniliprole) 95.3% of the original drug.
2.2 pharmaceutical formulation
0.0217g of 92% fenpropathrin is weighed, dissolved in 1mL of DMF, added with 0.2mL of Tween80 emulsifier, stirred uniformly, added with 198.8mL of clear water to prepare 100mg/L mother liquor, and diluted with water containing 0.1% of Tween80 emulsifier according to a proportion of 2 times to 50, 25, 12.5, 6.25 and 3.125mg/L, and 6 concentrations are used for test.
Weighing 0.0105g of chlorantraniliprole 95.3% of raw medicine, dissolving the raw medicine with 0.5mLDMF, adding 0.2mL of Tween80 emulsifier, uniformly stirring, adding 99.3mL of clear water to prepare 100mg/L mother solution, adding 96mL of water containing 0.1% Tween80 emulsifier into 4mL of mother solution to prepare 4mg/L test solution, and diluting the test solution into 2, 1, 0.5, 0.25 and 0.125mg/L with water containing 0.1% Tween80 emulsifier according to a proportion of 2 times, wherein the total concentration is 6.
According to the ratio of fenpropathrin to chlorantraniliprole of 1:4, 1:1, 2:1, 4:1 and 6:1, respectively measuring 0.8, 5, 6.67, 16 and 17.14mL of fenpropathrin mother liquor, respectively measuring 3.2, 5, 3.33, 4 and 2.86mL of chlorantraniliprole mother liquor, mixing the two, supplementing water added with an emulsifying agent to 100mL, respectively preparing test solutions of 4, 10, 20 and 20mg/L, respectively diluting the test solutions into 6 concentrations by using water containing 0.1% Tween80 emulsifying agent according to 2 times ratio, and performing test.
99mL of water containing 0.1% Tween80 emulsifier was added to a beaker containing 0mL of DMF as a blank.
3 Experimental method
3.1 test basis method
The leaching She Diefa is adopted by referring to pesticide biological Activity evaluation SOP and a biological measurement standard method NY/T1154.14-2008. The spinach leaves are beaten into leaf discs by a puncher with the diameter of 18mm, the leaf discs are soaked in the test liquid for 10 seconds, then are taken out, naturally dried, placed into a culture dish (with the diameter of 90 mm) filled with moisturizing filter paper, 5 leaf discs are placed into each dish, after naturally dried, 3-year larvae of plutella xylostella starved for 4 hours are selected into the culture dish, each dish is not lower than 10 heads, repeated for 4 times, after the treatment is finished, the dish cover is covered, and the culture is carried out in an observation chamber.
3.2 pharmaceutical treatment
Apples with basically consistent undeployed size and maturity (fruit chest diameter 7-8cm, weight 200 g) are selected, cleaned and dried, immersed in the fruit in real time, and the control is firstly treated and then sequentially carried out from low concentration to high concentration. Soaking in the measured liquid medicine for 10s, taking out, and naturally airing. Then putting apples into a beaker, inoculating 15 apples into 15 peach-shaped heartworm larvae with the age of 3, sealing each apple by using gauze, and placing the apples in an artificial constant-temperature insect-raising room with the temperature of 25+/-1 ℃ and the relative humidity of 60-70% and the photoperiod of 14:10 (L: D).
4 data investigation and statistical analysis
4.1 investigation time and method
After 72 hours, the death condition of the test insects is checked and recorded, and the death judgment standard of the test insects is that the test insects are gently contacted by forceps and have no response, so that the test insects are dead.
4.2 method for evaluating synergy
The co-toxicity coefficient (CTC) of each compounding combination was determined by the Sun & Johnson (1960) co-toxicity coefficient method (CTC) with reference to the biological standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient of ∈120 indicates a synergistic effect, an antagonism of ∈80, and an additive effect between 80 and 120. The calculation formula of the co-toxicity coefficient is as follows
Drug combination Theory Toxicity Index (TTI) =toxicity index of agent a×percent (%) of agent a in the combination+toxicity index of agent b×percent (%)
5 experimental results
TABLE 5 toxicity determination results of different proportions of fenpropathrin and chlorantraniliprole on spinach plutella xylostella
As is clear from Table 5, the combination of fenpropathrin and chlorantraniliprole in a ratio of 1:4, 1:1, 2:1, 4:1 and 6:1 showed synergistic effect on plutella xylostella except 1:1, wherein the synergistic effect of 4:1 was most remarkable. Therefore, the optimal ratio of fenpropathrin to chlorantraniliprole can be seen as 4:1 only from the synergistic toxicity comparison.
Application example four: example 1 field efficacy test for controlling spinach Plutella xylostella
1 purpose of test
The control effect and the safety of 250g/L fenpropathrin-chlorantraniliprole suspending agent developed by the applicant on the spinach plutella xylostella are verified, the field use dosage and the application technology are defined, and a scientific basis is provided for pesticide registration.
2 basis of test
The test is carried out by referring to pesticide field efficacy test quality management Specification (NY/T2885-2016) and pesticide field efficacy test criterion (one) for controlling lepidoptera larva of cruciferous vegetables (GB/T17980.13-2000), pesticide field efficacy test Standard operation Specification for controlling lepidoptera larva of cruciferous vegetables by Guangxi Zhuang national institute of sciences of agricultural sciences of plant protection, SOP-I-009, 02 edition of standard.
3 experiment site
The test was set up in the plant protection institute of the national institute of advanced agriculture, guangxi Zhuang nations.
4 selection of test subjects, crops and varieties
Test object: spinach plutella xylostella (Plutella xylostella), which is in a low-age larva generation period during application, and has a large insect quantity; test crop: the test crop is spinach, and the growth is good.
5 test design and arrangement
5.1 dosage and numbering of the medicament
TABLE 6 test design of reagents for test
5.2 times and times of application
The preparation is applied in the low-age larva generation period of the spinach plutella xylostella, the leaf backs of the leaf surfaces are uniformly sprayed, and the blank control is sprayed with equal amount of clean water. The test was performed once, and the time of application was 6 months and 7 days in 2020.
5.3 usage Capacity
The water consumption was 750 liters/hectare.
5.4 investigation time and times
3 times were investigated on 3 rd and 7 th days after the pre-drug and post-drug.
5.5 method for calculating efficacy
6 experimental results
TABLE 7 example 1 results of field efficacy test for controlling spinach Plutella xylostella
Note that: the control (%) in the table is the average value of each repetition; the same case letters in the table are not significantly different at 1% and 5% levels respectively by the single factor test statistical analysis of the random block of DPS (v 7.05) and the Duncan new complex polar difference method, and the difference is significant.
As can be seen from Table 7, the 250g/L fenpropathrin/chlorantraniliprole suspending agent of example 1 has good dispersibility in water, the quick-acting performance and the lasting effect of the suspending agent are generally good, and the control effects of the test agent of 250g/L fenpropathrin/chlorantraniliprole SC active ingredient 53.55, 71.4 and 89.25 g/hectare on spinach plutella xylostella are respectively as follows: 84.54%, 86.70% and 91.05%. The control effect of 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare is respectively as follows: 84.13%, 83.94%. The test result is tested and analyzed by a DuNCAN new complex polar difference method, the control effect of the test medicament of 250g/L fenpropathrin chloride benzamide SC active ingredient 53.55 and 71.4 g/hectare is equivalent to that of two control medicaments of 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare, and the difference is not obvious. The control effect of the test medicament of 250g/L fenpropathrin and chlorantraniliprole SC active ingredient of 89.25 g/hectare is extremely higher than that of two control medicaments of 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare.
The control effects of the test medicament with 250g/L fenpropathrin/chlorantraniliprole SC active ingredient 53.55, 71.4 and 89.25 g/hectare on the spinach plutella xylostella are respectively as follows: 86.45%, 89.08% and 93.25%. The control effect of 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare is respectively as follows: 86.58%, 85.89%. The test result is tested and analyzed by a DuNCAN new complex polar difference method, the control effect of the test medicament of 250g/L fenpropathrin chloride benzamide SC active ingredient 53.55 and 71.4 g/hectare is equivalent to that of two control medicaments of 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare, and the difference is not obvious. The control effect of the test medicament of 250g/L fenpropathrin and chlorantraniliprole SC active ingredient of 89.25 g/hectare is obviously higher than that of two control medicaments of 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare.
Application example five: example 2 field efficacy test for controlling spinach Plutella xylostella
The experimental purpose, experimental basis, medicament design and dosage, and medicament effect calculation method are the same as the application example IV.
1 experiment site
The test was set up in the Wu point city of Hubei province.
2 selection of test subjects, crops and varieties
Test object: spinach plutella xylostella;
test crop: the test crop is spinach, and the variety is spike.
3 times and times of application
Once in 11.10.2019.
4 usage capacity
The water consumption is 45L/667 square meter, 675L/hectare.
5 investigation time and times
Radix investigation: before application; second investigation: 1 day after administration; third investigation: 3 days after administration;
fourth investigation: 7 days after administration.
6 experimental results
Table 8 example 2 results of field efficacy test for controlling spinach plutella xylostella
Note that: the control (%) in the above table is the average value of each repetition.
As can be seen from Table 8, the test agent 250g/L fenpropathrin/chlorantraniliprole suspension of example 2 was excellent in dispersibility in water, and the agent was generally quick-acting and excellent in sustaining effect. The test medicament 250g/L fenpropathrin and chlorantraniliprole suspending agent has good quick acting performance on the spinach plutella xylostella, the control effect of the test medicament 15mL/667 square meter treatment, 20mL/667 square meter treatment and 25mL/667 square meter treatment on the spinach plutella xylostella is between 87.3 and 100 percent, the control medicament 20 percent fenpropathrin emulsifiable concentrate 45mL/667 square meter treatment and the control medicament 5 percent chlorantraniliprole suspending agent 55mL/667 square meter treatment on the spinach plutella xylostella are 79.3 percent and 91.9 percent respectively.
The test medicament 250g/L fenpropathrin-chlorantraniliprole suspending agent has excellent control effect on the plutella xylostella, and the control effect of the test medicament 250g/L fenpropathrin-chlorantraniliprole suspending agent on the adult plutella xylostella reaches more than 92.1-100% after each treatment;
analysis is carried out by using a Duncan new complex pole difference method, and the result shows that the difference between the control effect of the test medicament 250g/L fenpropathrin and chlorantraniliprole suspending agent 15mL/667 square meter treatment and the control medicament 20mL/667 square meter treatment on the spinach plutella xylostella is obvious, the obvious difference exists between the control effect of the test medicament 20mL/667 square meter treatment and the control medicament 20% fenpropathrin emulsifiable concentrate 45mL/667 square meter treatment on the spinach plutella xylostella, the control effect of the test medicament is better, and the control effect of the test medicament is not obvious from the control effect of the test medicament 5% chlorantraniliprole suspending agent 55mL/667 square meter treatment on the spinach plutella xylostella.
Application example six: example 3 field efficacy test for controlling spinach Plutella xylostella
The experimental purpose, experimental basis, medicament design and dosage, and medicament effect calculation method are the same as the application example IV.
1 experiment site
The experiment was arranged in the Jiangnan region of Guangxi nan Ning.
2 selection of test subjects, crops and varieties
Test object: spinach plutella xylostella (Plutella xylostella), which is in a low-age larva generation period during application, and has a large insect quantity;
test crop: is spinach.
3 times and times of application
The test was performed once, and the time of application was 6 months and 7 days in 2020.
4 usage capacity
The water consumption of the test liquid is 750 liters/hectare, and the water consumption per cell is 3 liters.
5 investigation time and times
3 times were investigated on 3 rd and 7 th days after the pre-drug and post-drug.
6 experimental results
Table 9 example 3 results of field efficacy test for controlling spinach Plutella xylostella
Note that: the control (%) in the table is the average value of each repetition; the same case letters in the table are not significantly different at 1% and 5% levels respectively by the single factor test statistical analysis of the random block of DPS (v 7.05) and the Duncan new complex polar difference method, and the difference is significant.
As can be seen from Table 9, the control effects of 250g/L (23.8%) of fenpropathrin chlorantraniliprole SC of example 3 on plutella xylostella at 3 days after the administration of the active ingredients of 53.55 g/hectare, 71.4 g/hectare and 89.25 g/hectare were as follows: 84.26%, 86.43% and 90.23%. The control effect of 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare is respectively as follows: 83.83%, 83.69%. The test result is tested and analyzed by a DuNCAN new complex polar difference method, the control effect of the test medicament of 250g/L (23.8) fenpropathrin-chlorantraniliprole SC active ingredient of 53.55 g/hectare and 71.4 g/hectare is equivalent to that of two control medicaments of 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare, and the difference is not obvious. The control effect of the test medicament 250g/L (23.8%) fenpropathrin-chlorantraniliprole SC active ingredient of 89.25 g/hectare is extremely higher than that of two control medicaments 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare.
The control effects of 250g/L (23.8%) of fenpropathrin chlorantraniliprole SC active ingredient 53.55 g/hectare, 71.4 g/hectare and 89.25 g/hectare of the test medicament of example 3 on plutella xylostella are respectively as follows: 86.45%, 87.84% and 91.99%. The control effect of 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare is respectively as follows: 85.29%, 85.89%. The test result is tested and analyzed by a DuNCAN new complex polar difference method, the control effect of the test medicament of 250g/L (23.8) fenpropathrin-chlorantraniliprole SC active ingredient of 53.55 g/hectare and 71.4 g/hectare is equivalent to that of two control medicaments of 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare, and the difference is not obvious. The control effect of the test medicament 250g/L (23.8%) fenpropathrin-chlorantraniliprole SC active ingredient of 89.25 g/hectare is obviously higher than that of two control medicaments 20% fenpropathrin EC 135 g/hectare and 5% chlorantraniliprole SC 41.25 g/hectare.
Application example seven: example 4 field efficacy test for controlling spinach Plutella xylostella
The experimental purpose, experimental basis, medicament design and dosage, and medicament effect calculation method are the same as the application example IV.
1 experiment site
The experiment was arranged in the Yangling region of Shanxi province.
2 selection of test subjects, crops and varieties
Test object: spinach plutella xylostella;
test crop: spinach, variety Huabo No. 1.
3 times and times of application
The medicine for the early stage of the occurrence of the low-age larvae of the spinach plutella xylostella is sprayed by adopting manual knapsack spraying, the working pressure is 0.3-0.4Mpa, the diameter of a spray hole is 0.7mm, and the medicine is only applied once in the experiment, and the application time is 5 months and 10 days in 2020.
4 usage capacity
The water consumption of the test liquid is 750 liters/hectare, and the water consumption per cell is 3 liters.
5 investigation time and times
The number of insect population was investigated before the drug administration, and the number of insect population was investigated 1d, 3d and 7d after the drug administration.
6 experimental results
Table 10 example 4 results of field efficacy test for controlling spinach plutella xylostella
Note that lowercase letters indicate differences between treatments at the 0.05 level and uppercase letters indicate differences between treatments at the 0.01 level.
As can be seen from Table 10, five dosage treatments of 250 g/liter of fenpropathrin-chlorantraniliprole suspension of example 4, 53.55g (a.i.)/ha, 71.4g (a.i.)/ha, 89.25g (a.i.)/ha and control agent 20% fenpropathrin emulsifiable concentrate 135g (a.i.)/ha, 5% chlorantraniliprole suspension 41.25g (a.i.)/ha had control effects of 82.49%, 91.22%, 93.65%, 90.34%, 70.29% for 1d after application, respectively; the prevention effect of 3d after the application is 87.00%, 91.33%, 94.70%, 90.30% and 80.26% respectively; the control effect of 7d after application is 90.63%, 98.23%, 99.04%, 94.24% and 90.30%.
Analysis of variance shows that: five amounts of 1d, 7d,250 g/liter of fenpropathrin-chlorantraniliprole suspension 53.55g (a.i.) per ha, 71.4g (a.i.) per ha, 89.25g (a.i.) per ha, and the control agent 20% fenpropathrin cream 135g (a.i.) per ha, 5% chlorantraniliprole suspension 41.25g (a.i.) per ha were treated with significantly different control effects at the 0.05 and 0.01 levels.
The results of the DMRT method test show that: 1d after the drug, at the level of 0.05, there was no significant difference between the control effect of 250g/l fenpropathrin-chlorantraniliprole suspension 53.55g (a.i.) per ha treatment and the control agent 5% chlorantraniliprole suspension 41.25g (a.i.) per ha treatment, neither of which was as effective as its 89.25g (a.i.) per ha treatment; at the level of 0.01, there was no significant difference between the control effect of 250g/l fenpropathrin chloride benzamide suspension 71.4, 89.25g (a.i.) per ha treatment and the control agent 20% fenpropathrin emulsifiable 135g (a.i.) per ha treatment, which are all superior to the control agent 5% chlorantraniliprole suspension 41.25g (a.i.) per ha treatment.
7d after the medicine, at the level of 0.05, there is no obvious difference between the control effect of 250g/L fenpropathrin chloride benzamide suspending agent 71.4 and 89.25g (a.i.)/ha treatment, and the control effect of 53.55g (a.i.)/ha treatment is better than the control effect of the control agent 20% fenpropathrin emulsifiable concentrate and 5% chlorantraniliprole suspending agent treatment; at the level of 0.01, there was no significant difference between the control effect of 250g/l fenpropathrin-chlorantraniliprole suspension 53.55g (a.i.)/ha treatment and the control agent 20% fenpropathrin emulsifiable concentrate, 5% chlorantraniliprole suspension, which were not as effective as 89.25g (a.i.)/ha treatment.
In a word, 250g/L (23.8%) of the test agent fenpropathrin chlorantraniliprole SC has good effect on preventing and controlling plutella xylostella, and has good quick-acting property, long lasting period and high safety.
Claims (6)
1. The application of the insecticidal composition for preventing and controlling spinach plutella xylostella is characterized in that: the insecticidal composition is prepared from fenpropathrin, chlorantraniliprole and an auxiliary agent, wherein the weight ratio of the fenpropathrin to the chlorantraniliprole is 6:1-2:1;
the insecticidal composition comprises the following components in percentage by weight: 2-51% of fenpropathrin, 2-48% of chlorantraniliprole, 1-10% of dispersing agent, 1-10% of wetting agent, 0.01-2% of defoamer, 0.2-2% of thickener, 0-10% of antifreezing agent, 0-1% of preservative, 0-2% of pH regulator and the balance of water;
the dispersing agent is one or more selected from 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, dodecyl polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether phosphate, naphthalene sulfonic acid formaldehyde condensate sodium salt block copolymer, comb-type polycarboxylate, sodium polycarboxylate and lignin sulfonate;
the wetting agent is one or more selected from alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkyl naphthalene sulfonate, alkylphenol formaldehyde resin polyoxyethylene ether, triphenyl ethylphenol polyoxypropylene polyoxyethylene block polymer, styrylphenol formaldehyde resin propylene oxide block polyether, castor oil polyoxyethylene ether and alkyl glycoside;
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 one or more of silicone defoaming agent, C10-20 saturated fatty acid compound, C8-10 fatty alcohol and octanol;
the pH regulator is one or more selected from glacial acetic acid and citric acid;
the thickening agent is one or more selected from xanthan gum, magnesium aluminum silicate, white carbon black, polyvinyl alcohol, carboxymethyl cellulose and carboxyethyl cellulose.
2. Use according to claim 1, characterized in that: the weight ratio of fenpropathrin to chlorantraniliprole is 4:1.
3. Use according to claim 2, characterized in that: the effective active ingredient content of fenpropathrin and chlorantraniliprole is 100 g/L-600 g/L.
4. Use according to claim 3, characterized in that: the effective active ingredient content of fenpropathrin and chlorantraniliprole is 150 g/L-400 g/L.
5. Use according to claim 4, characterized in that: the effective active ingredient content of fenpropathrin and chlorantraniliprole is 250 g/L.
6. Use according to any one of claims 1 to 5, characterized in that: the insecticidal composition is used for preventing and controlling the spinach plutella xylostella, and the dosage of the effective components is 53.55-89.25 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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