CN107836460B - Insecticidal composition containing cartap and imidacloprid and application thereof - Google Patents
Insecticidal composition containing cartap and imidacloprid and application thereof Download PDFInfo
- Publication number
- CN107836460B CN107836460B CN201711188422.6A CN201711188422A CN107836460B CN 107836460 B CN107836460 B CN 107836460B CN 201711188422 A CN201711188422 A CN 201711188422A CN 107836460 B CN107836460 B CN 107836460B
- Authority
- CN
- China
- Prior art keywords
- cartap
- imidacloprid
- agent
- water
- preparation
- Prior art date
- 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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Links
- 239000005906 Imidacloprid Substances 0.000 title claims abstract description 139
- 229940056881 imidacloprid Drugs 0.000 title claims abstract description 139
- IRUJZVNXZWPBMU-UHFFFAOYSA-N cartap Chemical compound NC(=O)SCC(N(C)C)CSC(N)=O IRUJZVNXZWPBMU-UHFFFAOYSA-N 0.000 title claims abstract description 132
- YWTYJOPNNQFBPC-UHFFFAOYSA-N imidacloprid Chemical compound [O-][N+](=O)\N=C1/NCCN1CC1=CC=C(Cl)N=C1 YWTYJOPNNQFBPC-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 239000000203 mixture Substances 0.000 title claims abstract description 36
- 230000000749 insecticidal effect Effects 0.000 title claims abstract 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
- A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
-
- 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
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/12—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, neither directly attached to a ring nor the nitrogen atom being a member of a heterocyclic ring
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
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Abstract
The invention discloses a cartap and imidacloprid-containing insecticidal composition and application thereof. The insecticidal composition takes cartap and imidacloprid as main active ingredients, and the mass ratio of the cartap to the imidacloprid is 30: 1-1: 30. The insecticidal composition can be applied to prevention and removal of root-knot nematodes on vegetables, peanuts, sweet potatoes, forestry flower nursery gardens, rice or wheat and stem borers on rice.
Description
Technical Field
The invention belongs to the technical field of pesticide preparations, and relates to an insecticidal composition containing cartap and imidacloprid and application thereof.
Background
Cartap, also known as cartap and Padan, is an analogue or precursor pesticide of natural toxin, belongs to an acetylcholine receptor blocker, and kills the insects by stopping synaptic transmission to paralyze the central nervous system and stop feeding and starving. Cartap has strong stomach toxicity, and has the functions of contact poisoning, certain food refusal, egg killing and the like. Quick effect on pests, long residual action period and broad spectrum. The cartap can be used for preventing and treating various pests and nematodes of Lepidoptera, Coleoptera, Hemiptera, Diptera, etc.
Imidacloprid is a nitromethylene systemic insecticide, is an action body of a nicotine acetylcholine receptor, interferes the motor nervous system of pests to cause the failure of chemical signal transmission, and has no cross resistance with other medicaments. The imidacloprid has the characteristics of broad spectrum, high efficiency, low toxicity, low residue, safety to people, livestock, plants and natural enemies and the like, and has multiple drug effects of contact poisoning, stomach toxicity and systemic absorption. The insecticidal composition is mainly used for preventing and controlling piercing-sucking mouthpart pests, and is also effective on some pests of Coleoptera, Diptera and Lepidoptera; in addition, the pesticide composition has better control effect on underground pests. Suitable crops include rice, wheat, corn, cotton, potato, vegetables, sugar beet, fruit trees, etc. Due to its excellent systemic properties, it is particularly suitable for application by seed treatment and by broadcast application of granules.
Disclosure of Invention
The invention aims to provide an insecticidal composition of cartap and imidacloprid, which can be applied to prevention and control of root-knot nematode and rice stem borer.
The invention also aims to provide a preparation method of the insecticidal composition.
In order to achieve the purpose, the invention adopts the following technical scheme:
the insecticidal composition containing cartap and imidacloprid is characterized in that the cartap and the imidacloprid are used as main active ingredients, and the mass ratio of the cartap to the imidacloprid is 30: 1-1: 30.
The mass ratio of cartap to imidacloprid in the insecticidal composition is 10: 1-1: 10.
In the insecticidal composition, the total mass percentage of cartap and imidacloprid is preferably 2-90%.
The insecticidal composition is preferably prepared into any one dosage form by taking cartap and imidacloprid as main active ingredients and auxiliary materials allowed by pesticides.
The dosage form is preferably a suspending agent, a dispersible oil suspending agent, a water dispersible granule, a broadcast granule, a microemulsion and an aqueous solution; the auxiliary materials are preferably one or more of wetting agent, dispersing agent, filler (carrier), emulsifier, thickener, organic solvent, disintegrating agent, binder, defoaming agent, antifreezing agent, preservative, acid and water.
As further preferences for the pesticidal composition of the invention: the wetting agent is selected from one or more of sodium dodecyl sulfate or nekal; the dispersant is one or more selected from sodium lignosulfonate, phosphate polyoxyethylene ether, polycarboxylate (such as GY-D800, GY-D900, GY-D07) and alkyl naphthalene sulfonate; the filler is selected from one or more of kaolin, starch, talcum powder, white carbon black, diatomite, bentonite and montmorillonite; the emulsifier is selected from one or more of calcium dodecyl benzene sulfonate, alkylphenol polyoxyethylene formaldehyde condensate sulfate SOPA270, fatty alcohol polyoxyethylene ether, cashew nut oil polyoxyethylene ether, agricultural emulsion No. 400, agricultural emulsion No. 33, agricultural emulsion No. 44 and agricultural emulsion No. 600; the thickening agent is selected from one or more of organic bentonite, magnesium aluminum silicate and xanthan gum; the organic solvent is selected from one or more of methyl oleate, soybean oil, cyclohexanone, dimethyl sulfoxide DMSO, dimethylformamide DMF, nitrogen methyl pyrrolidone, ethylene glycol dimethyl ether and aromatic hydrocarbon S-200 solvent; the disintegrant is selected from one or more of ammonium sulfate or sodium sulfate; the defoaming agent is an organic silicon defoaming agent; the binder is selected from one or more of polyethylene glycol 400, polyethylene glycol 600, polyethylene glycol 6000, polyethylene glycol 4000, polyvinyl alcohol 1788 and polyvidone K30; the antifreezing agent is selected from one or more of ethylene glycol, propylene glycol, glycerol and urea; the preservative is one or more of sodium benzoate or cason; the acid is selected from one or more of phosphoric acid, citric acid and sulfuric acid; the water is deionized water.
When the preparation is a suspending agent, the auxiliary materials are an emulsifier, a dispersant, a wetting agent, a thickening agent, a defoaming agent, an antifreezing agent, a preservative and a solvent; the preparation method comprises the following steps: adding water, a dispersing agent, a wetting agent, imidacloprid, a part of thickening agent, a defoaming agent, an antifreezing agent and a preservative into a shearing kettle, shearing uniformly, grinding by using a 50L horizontal sand mill until the particle size (D90) is less than or equal to 3um, adding the rest of thickening agent and cartap, and shearing uniformly to obtain the suspending agent.
When the dosage form is a dispersible oil suspending agent, the auxiliary materials are a dispersing agent, an emulsifying agent, a thickening agent and a solvent; the preparation method comprises the following steps: adding a solvent, an emulsifier, a dispersant, a thickener, cartap and imidacloprid into a shearing kettle in sequence, shearing uniformly, and grinding by using a horizontal sand mill until the particle size (D90) is less than or equal to 5um to obtain the dispersible oil suspending agent.
When the dosage form is a water dispersible granule, the auxiliary materials are a wetting agent, a dispersing agent, a disintegrating agent and a filler; the preparation method comprises the following steps: adding the filler, the disintegrant, the cartap, the imidacloprid, the wetting agent and the dispersant into a stirring device in sequence, uniformly stirring, then crushing to 800-1250 meshes by using an airflow crusher, kneading the obtained powder material by adding water, preparing into cylindrical granules with the diameter of 0.5 or 0.8mm by using a rotary extrusion granulator, and drying and screening to obtain the water dispersible granules.
When the dosage form is a broadcast granule, the auxiliary materials are a binder and a filler; the preparation method comprises the following steps: adding the cartap, the imidacloprid, the binder and the filler into a stirring device, uniformly stirring, and extruding and granulating by using double rollers to obtain the broadcast granules with the particle size of 2-6 mm.
When the dosage form is microemulsion, the auxiliary materials are emulsifier, organic solvent and water; the preparation method comprises the following steps: dissolving imidacloprid and emulsifier completely with solvent, adding water, stirring, adding water-soluble cartap, stirring and dissolving completely to obtain the invented microemulsion.
When the preparation is an aqueous solution, the auxiliary materials are an emulsifier, acid and water; the preparation method comprises the following steps: adding acid into water, adding imidacloprid into the acid solution, adding an emulsifier after complete dissolution, stirring to clear, and finally adding cartap, stirring and dissolving completely to obtain the aqua.
The invention relates to application of an insecticidal composition in root-knot nematodes.
The insecticidal composition is preferably applied to control of root-knot nematodes on cucumbers, tomatoes, hot peppers, peanuts, sweet potatoes, forestry flower nurseries, rice or wheat.
The insecticidal composition provided by the invention is applied to rice stem borers.
The insecticidal composition provided by the invention is preferably applied to rice stem borers and rice leaf rollers.
Has the advantages that:
the cartap and the imidacloprid have different action mechanisms, can effectively delay the resistance of pests to pesticides, simultaneously enlarge the range of control objects, and have effects on sucking pests, lepidoptera pests, coleopteran pests, hemiptera pests and dipteran pests. In addition, the two can be used for soil treatment, the cartap has the function of killing nematodes, the imidacloprid has better control effect on underground pests, and the two can be used for controlling the underground pests and the nematodes.
The cartap and the imidacloprid are compounded according to a specific proportioning range, so that the composition has obvious synergistic effect on root-knot nematodes, rice stem borers and rice leaf rollers, and has better prevention and treatment effects compared with a single dose, thereby reducing the frequency of pesticide application, reducing the usage amount and cost of pesticides and lightening the pollution to the environment.
Detailed Description
Example 1
A21% cartap and imidacloprid pesticide preparation is a suspending agent, and the suspending agent comprises the following components in percentage by weight: 1kg of cartap, 20kg of imidacloprid, 2kg of sodium dodecyl sulfate, 3kg of sodium lignosulfonate, 0.3kg of magnesium aluminum silicate, 0.1kg of xanthan gum, 0.2kg of defoaming agent, 3kg of ethylene glycol, 0.2kg of sodium benzoate and the balance of water to 100 kg.
The preparation method of the suspending agent comprises the following steps: adding water, sodium lignosulphonate, sodium dodecyl sulfate, imidacloprid, magnesium aluminum silicate, a defoaming agent, ethylene glycol and sodium benzoate into a shearing kettle, shearing uniformly, grinding by using a 50L horizontal sand mill until the particle size (D90) is less than or equal to 3um, adding xanthan gum and cartap, and shearing uniformly to obtain the suspending agent.
Example 2
A pesticide preparation of 36 percent cartap and imidacloprid is a suspending agent, and the suspending agent comprises the following components in percentage by weight: cartap 6kg, imidacloprid 30kg, G50002kg, non-ionic EO/PO block copolymer GY-D073kg, magnesium aluminum silicate 0.2kg, xanthan gum 0.06kg, defoamer 0.2kg, ethylene glycol 3kg, kaempferol 0.2kg, and water to 100 kg.
The preparation method of the suspending agent comprises the following steps: adding water, G5000, GY-D07, imidacloprid, magnesium aluminum silicate, a defoaming agent, ethylene glycol and cartap into a shearing kettle, shearing uniformly, grinding by using a 50L horizontal sand mill until the particle size (D90) is less than or equal to 3um, adding xanthan gum and cartap, and shearing uniformly to obtain the suspending agent.
Example 3
A pesticide preparation of 24% cartap and imidacloprid is a dispersible oil suspending agent, and comprises the following components in percentage by weight: 20kg of cartap, 4kg of imidacloprid, 10kg of castor oil polyoxyethylene ether, 5kg of calcium dodecyl benzene sulfonate, 0.8kg of organic bentonite and 100kg of soybean oil supplement.
The preparation method of the dispersible oil suspending agent comprises the following steps: sequentially adding soybean oil, castor oil polyoxyethylene ether, dodecyl benzene sulfonic acid modified, organic bentonite, cartap and imidacloprid into a shearing kettle, shearing uniformly, and grinding by using a horizontal sand mill until the particle size (D90) is less than or equal to 5um to obtain the dispersible oil suspending agent.
Example 4
A62% cartap and imidacloprid pesticide preparation is a water dispersible granule, and comprises the following components in percentage by weight: cartap 2kg, imidacloprid 60kg, sodium dodecyl sulfate 2kg, GY-D8004kg, sodium sulfate 5kg, montmorillonite to make up to 100 kg.
The preparation method of the water dispersible granule comprises the steps of sequentially adding montmorillonite, sodium sulfate, cartap, imidacloprid, sodium dodecyl sulfate and GY-D800 into a stirring device, uniformly stirring, then crushing into 1250 meshes by using an airflow crusher, adding water into the obtained powder material for kneading, preparing into cylindrical granules with the diameter of 0.5 or 0.8mm by using a rotary extrusion granulator, and drying and screening to obtain the water dispersible granule.
Example 5
A pesticide preparation of 84% cartap and imidacloprid is a water dispersible granule, and comprises the following components in percentage by weight: 80kg of cartap, 4kg of imidacloprid, 1kg of sodium dodecyl sulfate, GY-D9004kg, 2kg of ammonium sulfate and the balance of starch to 100 kg.
The preparation method of the water dispersible granule comprises the steps of sequentially adding starch, ammonium sulfate, cartap, imidacloprid, sodium dodecyl sulfate and GY-D9004 into a stirring device, uniformly stirring, then crushing into 1250 meshes by using an airflow crusher, adding water into the obtained powder material, kneading, preparing into cylindrical granules with the diameter of 0.5 or 0.8mm by using a rotary extrusion granulator, and drying and screening to obtain the water dispersible granule.
Example 6
The pesticide preparation of 88 percent cartap and imidacloprid is a spreading granule, and the wettable powder spreading granule comprises the following components in percentage by weight: 80kg of cartap, 8kg of imidacloprid, 6002kg of polyethylene glycol and montmorillonite, wherein the weight is up to 100 kg.
Adding the cartap, the imidacloprid, the polyethylene glycol 600 and the montmorillonite into a stirring device, uniformly stirring, and carrying out a double-roller extrusion granulator to obtain the broadcast granules with the particle size of 4.5 mm.
Example 7
The pesticide preparation of 88 percent cartap and imidacloprid is a spreading granule, and the wettable powder spreading granule comprises the following components in percentage by weight: cartap 8kg, imidacloprid 80kg, polyethylene glycol 6002kg and kaolin up to 100 kg.
Adding the cartap, the imidacloprid, the polyethylene glycol 600 and the kaolin into a stirring device, uniformly stirring, and extruding a granulator by using double rollers to obtain the broadcast granules with the particle size of 4.5 mm.
Example 8
The pesticide preparation of 31 percent cartap and imidacloprid is microemulsion, and the microemulsion comprises the following components in percentage by weight: 30kg of cartap, 1kg of imidacloprid, 6kg of rapid penetrant T, 0-258kg of peregal, 6kg of 600# and DMSO: 10%, cyclohexanone 5%, water to 100 kg.
The preparation method of the microemulsion comprises the following steps: dissolving imidacloprid, rapid penetrant T, peregal 0-25 and 600# completely by using DMSO and cyclohexanone, adding water, uniformly stirring, finally adding water-soluble cartap, stirring and completely dissolving to obtain the microemulsion.
Example 9
A pesticide preparation of 20% cartap and imidacloprid is an aqueous solution, and comprises the following components in percentage by weight: cartap 10kg, imidacloprid 10kg, 600P (600# phosphate polyoxyethylene ether) 10kg, farm emulsion 600 #: 3kg, phosphoric acid: 3kg, citric acid: 1kg, and the balance of water to 100 kg.
The preparation method of the water agent comprises the following steps: adding phosphoric acid and citric acid into water, adding imidacloprid into the acid solution, adding 600P after completely dissolving, stirring to clear, and finally adding cartap, stirring and dissolving completely to obtain the aqua.
Example 10
The insecticidal effect of the cartap and the imidacloprid after compounding is tested, and the specific implementation mode is as follows:
(1) control effect on cucumber root-knot nematode
And (3) testing pesticides: spreading 88% cartap imidacloprid granules (10: 1); 88% cartap imidacloprid broadcasting granule (1: 10)
Control agents: 2% imidacloprid granules (Qingdao Zhengdao pharmaceutical industry Co., Ltd.) and 9% cartap granules (Jingbo agrichemical science and technology Co., Ltd.)
The control object is: root knot nematode of cucumber
Environmental conditions: the test is set in Hongze county of Huaian city, the conditions of test cell cultivation, fertilizer and water management and the like are consistent, and the cucumber cultivar is Zhongnong No. 106.
And (3) experimental design: the experiment is provided with 5 treatments, each treatment is repeated for 4 times, 20 cells are provided, the area of each cell is 30 square meters, and the cells are arranged randomly. The 5 treatments were: (1) spreading 88% cartap imidacloprid granules (10: 1); (2) spreading 88% cartap imidacloprid granules (1: 10); (3) 2% imidacloprid granules; (4) 9% cartap granular formulation; (5) and (5) clear water control.
The test method comprises the following steps: selecting plots with evenly distributed root-knot nematodes and medium and heavy weights for testing. Medicament treatment: after cleaning the field, applying the required fertilizer, ploughing, leveling the land, ridging and planting the cucumbers. The medicament is uniformly scattered in the soil near the root according to the corresponding dosage.
The investigation method comprises the following steps: after 30 days of application, randomly investigating 15 cucumbers in each cell, digging out roots, recording the number of disease plants at each level, calculating the disease plant rate, disease index and prevention and treatment effect, carrying out variance analysis on the prevention effect, and comparing the difference significance among treatments by using a new repeated polarization method. The grading method of diseased plants comprises the following steps:
grading the disease condition according to the following standard; calculating disease index and relative prevention effect according to a formula.
Level 0 is complete root system without root knots;
grade 1 is that a small amount of root knots exist, and the root necrosis is less than 25%;
grade 2 is that the number of root knots accounts for 26 to 50 percent of the root coefficient;
the 3 grade is that the root knot number accounts for 51 to 75 percent of the root coefficient;
the 4 grade is that the root knots are extremely large and large, and account for 76% -100% of the root coefficient.
Disease index ∑ (number of plants at each stage × number of the stage)/(total number of plants × 4) × 100.
The preventing and treating effect (%) is (contrast disease index-treatment disease index)/contrast disease index is multiplied by 100
The results are shown in Table 1.
TABLE 1 prevention and treatment of cucumber root-knot nematode with test agents
Note: the lower case alphabet is not 5% significant compared with Duncan's new repolarization method in DPS software.
(2) Prevention and treatment effect on chilo suppressalis
And (3) testing pesticides: 21% cartap-imidacloprid suspension, 36% cartap-imidacloprid suspension, 24% cartap-imidacloprid dispersible oil suspension, 62% cartap-imidacloprid water dispersible granule, 84% cartap-imidacloprid water dispersible granule, 31% cartap-imidacloprid microemulsion, 20% cartap-imidacloprid aqua
Control agents: 50% cartap soluble powder (Qingdao Kaiyuan Xiang chemical Co., Shandong province) and 70% imidacloprid water dispersible granule (Yangcheng Su province Rimin farm chemical Co., Ltd.)
The control object is: chilo suppressalis
Environmental conditions: the test is set in Hongze county of Huaian city, the fertility of the test field is medium, the cultivation conditions are consistent, and the rice variety is japonica rice No. 8 Wuyujing.
And (3) experimental design: the experiment was designed with 10 treatments each repeated 4 times for a total of 40 zones, each zone having an area of 30 square meters, and the zones were randomly arranged. The 10 treatments were: (1) 21% cartap imidacloprid suspending agent; (2) 36% cartap imidacloprid suspending agent; (3) 24% cartap imidacloprid dispersible oil suspending agent; (4)62 percent cartap imidacloprid water dispersible granules; (5) 84% cartap imidacloprid water dispersible granules; (6) 31% cartap imidacloprid microemulsion; (7) 20% cartap imidacloprid aqua; (8) 50% cartap soluble powder; (9) 71% imidacloprid water granules; (10) and (5) clear water control.
The test method comprises the following steps: the experiment is carried out on the first generation chilo suppressalis in the peak period of the low-age larvae, the pesticide application is carried out once (spraying is carried out by using a Jacto 16LITROS type sprayer of Singapore Linong, the aperture is less than 7mm, no residual liquid is left in the pesticide), and 1.5 kg of water is used in each cell.
The investigation method comprises the following steps: according to the investigation method of 'pesticide prevention and control of lepidoptera boring insects' in pesticide field efficacy test criterion (I), after the rice field chilo suppressalis damage is shaped, parallel skip sampling is adopted, the number of dead centers in each cell is investigated, 40 clusters of rice are investigated in each cell, and the withering rate and the prevention and control effect are calculated. The efficacy calculation method is as follows:
the results are shown in Table 2.
TABLE 2 field control effect of the test agents on Chilo suppressalis
| Name of drug treatment | Dosage (a.i. gram/mu) | Subtraction rate (%) | Control effect (%) |
| 21% cartap imidacloprid suspending agent | 30 | 0.22 | 93.27a |
| 36% cartap imidacloprid suspending agent | 30 | 0.31 | 90.52c |
| 24% cartap imidacloprid dispersible oil suspending agent | 30 | 0.25 | 92.35b |
| 62% cartap imidacloprid microemulsion granule | 30 | 0.40 | 87.77e |
| 84% cartap imidacloprid water dispersible granule | 30 | 0.51 | 84.40f |
| 31% cartap imidacloprid microemulsion | 30 | 0.38 | 88.38e |
| 20% cartap imidacloprid aqua | 30 | 0.34 | 89.60d |
| 50% cartap soluble powder | 30 | 1.05 | 67.89h |
| 70% imidacloprid water dispersible granule | 30 | 0.68 | 79.20g |
| Blank control | 0 | 3.27 | / |
Note: lower case letters indicate a 5% significance level, compared using Duncan's new repolarization method in DPS software.
(3) Control effect on rice leaf rollers
And (3) testing pesticides: 21% cartap-imidacloprid suspension, 36% cartap-imidacloprid suspension, 24% cartap-imidacloprid dispersible oil suspension, 62% cartap-imidacloprid water dispersible granule, 84% cartap-imidacloprid water dispersible granule, 31% cartap-imidacloprid microemulsion, 20% cartap-imidacloprid aqua
Control agents: 50% cartap soluble powder (Qingdao Kaiyuan Xiang chemical Co., Shandong province) and 70% imidacloprid water dispersible granule (Yangcheng Su province Rimin farm chemical Co., Ltd.)
The control object is: leaf roller of rice leaf roller
Environmental conditions: the test is set in Hongze county of Huaian city, the conditions of cultivation and fertilizer and water management in test districts are consistent, and the variety to be tested is Nanjing 5055.
And (3) experimental design: the experiment was designed with 10 treatments each repeated 4 times for a total of 40 zones, each zone having an area of 30 square meters, and the zones were randomly arranged. The 10 treatments were: (1) 21% cartap imidacloprid suspending agent; (2) 36% cartap imidacloprid suspending agent; (3) 24% cartap imidacloprid dispersible oil suspending agent; (4)62 percent cartap imidacloprid water dispersible granules; (5) 84% cartap imidacloprid water dispersible granules; (6) 31% cartap imidacloprid microemulsion; (7) 20% cartap imidacloprid aqua; (8) 50% cartap soluble powder; (9) 71% imidacloprid water granules; (10) and (5) clear water control. The test is that the pesticide is applied once in the tillering stage of rice and the full incubation stage of rice leaf roller eggs, an electric knapsack sprayer is adopted for spraying, 1.5 kilograms of water are applied to each cell, and the front and back surfaces of the leaves are uniformly sprayed during pesticide application.
The investigation method comprises the following steps: and (4) carrying out five-point sampling on each cell to check 25 clusters of rice, counting the leaf rolling rate, comparing the leaf rolling rate with the leaf rolling rate of a control area, calculating the relative prevention effect, investigating the insect rate in the leaves and calculating the insect killing effect.
Investigation time: the cardinality is not consulted before processing. The effect was investigated 1 time after the white and empty control had suffered significantly or was currently classified as harmful.
Drug effect calculation method
The results are shown in Table 3.
TABLE 3 field control Effect of test Agents on Cnaphalocrocis medinalis
| Name of drug treatment | Dosage (a.i. gram/mu) | Leaf curl ratio (%) | Control effect (%) |
| 21% cartap imidacloprid suspending agent | 30 | 1.91 | 90.12c |
| 36% cartap imidacloprid suspending agent | 30 | 1.48 | 92.35a |
| 24% cartap imidacloprid dispersible oil suspending agent | 30 | 1.70 | 91.21b |
| 62% cartap imidacloprid water dispersible granule | 30 | 2.82 | 85.42d |
| 84% cartap imidacloprid water dispersible granule | 30 | 3.16 | 83.67e |
| 31% cartap imidacloprid microemulsion | 30 | 3.34 | 82.73f |
| 20% cartap imidacloprid aqua | 30 | 3.75 | 80.61g |
| 50% cartap soluble powder | 30 | 5.54 | 71.35h |
| 70% imidacloprid water dispersible granule | 30 | 9.43 | 51.24i |
| Blank control | 0 | 19.34 | / |
Note: lower case letters indicate a 5% significance level, compared using Duncan's new repolarization method in DPS software.
Test results show that the control effect of the compound of the cartap and the imidacloprid on the cucumber root-knot nematode, the rice stem borer and the rice leaf roller is obviously higher than that of the cartap and the imidacloprid single agent. Therefore, the cartap and the imidacloprid are used together in the production practice, thereby being economical, efficient and environment-friendly.
Example 11
(1) Toxicity determination of cartap and imidacloprid compounding on root-knot nematode
Southern root knot nematodes, collected in cucumber greenhouses in Hongze, Huai' an, were prepared by picking fresh oocysts from damaged cucumber root knots and placing them on filter paper, placing the filter paper on a 75 μm mesh screen, and placing the mesh screen in a petri dish containing clear water so that the water slightly overflowed the egg mass. Incubating at 25 deg.C in incubator, collecting 2-instar larvae in culture dish every 24 hr, and placing in 4 deg.C refrigerator for use.
Medicament: 98% cartap crude drug and 95% imidacloprid crude drug
Determination of toxicity of medicament to meloidogyne incognita
Dissolving 98% cartap crude drug with sterilized water to obtain 1000mg/L mother liquor, and dissolving 95% imidacloprid crude drug with acetone to obtain 1000mg/L mother liquor; the cartap and the imidacloprid mother liquor are prepared into a cartap and imidacloprid compound mixture, wherein the cartap: the proportion of imidacloprid is respectively as follows: 40: 1, 30: 1, 20: 1, 10: 1, 5: 1, 1: 5, 1: 10, 1: 20, 1: 30, 1: 40. The prepared drug was diluted with sterile water to a series of concentrations, 5 concentrations were set for each experiment, and treated with clear water as a control. The 2-year-old root-knot nematodes obtained by separation and activation are prepared into 200 per mL suspension. By adopting a direct contact killing method, a biochemical test plate with 24 holes is taken, and 0.5mL of test solution is respectively put in a small hole. Equal volumes of nematode suspension were added and equal amounts of clear water were added to the blank, with 3 replicates per treatment set-up. Sealing the 24-hole plate with sealing film, placing in 25 deg.C incubator for 48 hr, pouring the treated and control nematode suspensions into 500-mesh sieve, filtering to remove medicinal liquid, examining survival number and death number of root-knot nematodes, and calculating and correcting mortality.
Using DPS software to process data and calculate regression equation and LC50. Combination assay of the cocktail cotoxicity Coefficient (CTC, Co-toxin coeffient) was calculated according to the method described in Sun Yunpei and Johnson (1960). Judging the combined virulence of the medicament by using the CTC value, wherein the CTC is less than or equal to 80 and shows antagonism; 80 < CTC < 120 as additive effect; CTC > 120 shows synergistic effect.
The test results are shown in Table 4
TABLE 4 toxicity test results of cartap and imidacloprid combination for Meloidogyne incognita
As can be seen from Table 4, cartap and dazomet have obvious synergistic effect on Meloidogyne incognita in the range of 30: 1-1: 30.
(2) Toxicity determination of cartap and imidacloprid compounding on Chilo suppressalis
Chilo suppressalis virulence determination (artificial feed mixing method): dissolving 98% cartap crude drug with sterilized water to obtain 1000mg/L mother liquor, and dissolving 95% imidacloprid crude drug with acetone to obtain 1000mg/L mother liquor; the cartap and the imidacloprid mother liquor are prepared into a cartap and imidacloprid compound mixture, wherein the cartap: the proportion of imidacloprid is respectively as follows: 40: 1, 30: 1, 20: 1, 10: 1, 5: 1, 1: 5, 1: 10, 1: 20, 1: 30, 1: 40. Diluting the prepared medicines with sterile water to required series of concentrations, setting 5 concentrations for each medicine treatment, respectively mixing with artificial feed (formula referred to FAO1987), selecting the newly hatched larvae, repeating for 4 times and 10 times for each treatment, and testing 40 insects in total. Distilled water was used as a blank. After 5 days of treatment, the results were examined, and the failure of coordinated movement of the touch insects was taken as the death criterion.
Using DPS software to process data and calculate regression equation and LC50. Combination assay of the cocktail cotoxicity Coefficient (CTC, Co-toxin coeffient) was calculated according to the method described in Sun Yunpei and Johnson (1960). Judging the combined virulence of the medicament by using the CTC value, wherein the CTC is less than or equal to 80 and shows antagonism; 80 < CTC < 120 as additive effect; CTC ≥ 120 is expressed byAnd (4) synergism.
The test results are shown in Table 5
TABLE 5 toxicity test results of Chilo suppressalis by cartap and imidacloprid complex pairing
As can be seen from Table 5, the cartap and the dazomet are compounded in the range of 30: 1-1: 30, and have obvious synergistic effect on the rice stem borer.
(3) Toxicity determination of cartap and imidacloprid compounding on rice leaf roller
Testing toxicity of rice leaf rollers (rice seedling dipping method): dissolving 98% cartap crude drug with sterilized water to obtain 1000mg/L mother liquor, and dissolving 95% imidacloprid crude drug with acetone to obtain 1000mg/L mother liquor; the cartap and the imidacloprid mother liquor are prepared into a cartap and imidacloprid compound mixture, wherein the cartap: the proportion of imidacloprid is respectively as follows: 40: 1, 30: 1, 20: 1, 10: 1, 5: 1, 1: 5, 1: 10, 1: 20, 1: 30, 1: 40. The prepared medicament is diluted by distilled water to prepare a series of concentrations, 5 concentrations are set for each test, and clear water treatment is used as a control. Soaking 30 rice seedlings of 7-day-old rice seedlings together with roots in liquid medicine with a series of concentrations for 20s, repeating each concentration for 4 times, taking out the rice seedlings, draining the rice seedlings until no liquid drips, placing the rice seedlings in a disposable plastic cup padded with filter paper, inoculating 10 rice leaf roller larvae of 3-year-old rice seedlings after 30min, wherein the total number of the rice leaf roller larvae is 40 after each treatment, sealing the rice leaf roller seedlings by using a preservative film, and pricking holes by using No. 3 insect needles. The culture cups after the inoculation are placed in a constant-temperature illumination incubator with the temperature of 25 +/-1 ℃, the humidity of 70 +/-10 percent and the illumination period of 16: 8h (L: D). After 72h, the number of surviving worms was recorded by examination.
Using DPS software to process data and calculate regression equation and LC50. Combination assay of the cocktail cotoxicity Coefficient (CTC, Co-toxin coeffient) was calculated according to the method described in Sun Yunpei and Johnson (1960). Judging the combined virulence of the medicament by using the CTC value, wherein the CTC is less than or equal to 80 and shows antagonism; 80 < CTC < 120 as additive effect; CTC > 120 shows synergistic effect.
The test results are shown in Table 6.
TABLE 6 toxicity test results of cartap and imidacloprid combination for cnaphalocrocis medinalis
As can be seen from Table 6, the cartap and the dazomet are compounded in the range of 30: 1-1: 30, and have obvious synergistic effect on the rice leaf roller.
The above embodiments are only for explaining and illustrating the technical solution of the present invention, but not for limiting the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (5)
1. A pesticidal composition containing cartap and imidacloprid is characterized in that the pesticidal composition takes the cartap and the imidacloprid as main active ingredients, and the mass ratio of the cartap to the imidacloprid is 1: 20-1: 30;
the cartap and the imidacloprid account for 2 to 90 percent of the total mass percentage of the insecticidal composition;
the insecticidal composition takes cartap and imidacloprid as main active ingredients and auxiliary materials allowed by pesticides to prepare any one preparation formulation;
the insecticidal composition is applied to control root-knot nematodes and rice stem borers.
2. The insecticidal composition according to claim 1, wherein the formulation is selected from the group consisting of a suspension, a dispersible oil suspension, a water dispersible granule, a granule for spreading, a microemulsion, and an aqueous solution; the auxiliary materials are selected from one or more of wetting agents, dispersing agents, fillers, emulsifying agents, thickening agents, organic solvents, disintegrating agents, bonding agents, defoaming agents, antifreezing agents, preservatives, acids and water.
3. The insecticidal composition according to claim 2, characterized in that the wetting agent is selected from one or more of sodium lauryl sulfate or nekal; the dispersing agent is selected from one or more of sodium lignosulfonate, phosphate polyoxyethylene ether, polycarboxylate and alkyl naphthalene sulfonate; the filler is selected from one or more of kaolin, starch, talcum powder, white carbon black, diatomite, bentonite and montmorillonite; the emulsifier is selected from one or more of calcium dodecyl benzene sulfonate, alkylphenol polyoxyethylene formaldehyde condensate sulfate SOPA270, fatty alcohol polyoxyethylene ether, cashew nut oil polyoxyethylene ether, agricultural emulsion No. 400, agricultural emulsion No. 33, agricultural emulsion No. 44 and agricultural emulsion No. 600; the thickening agent is selected from one or more of organic bentonite, magnesium aluminum silicate and xanthan gum; the organic solvent is selected from one or more of methyl oleate, soybean oil, cyclohexanone, dimethyl sulfoxide, dimethylformamide, nitrogen methyl pyrrolidone, glycol dimethyl ether and aromatic hydrocarbon S-200 solvent; the disintegrant is selected from one or more of ammonium sulfate or sodium sulfate; the defoaming agent is an organic silicon defoaming agent; the binder is selected from one or more of polyethylene glycol 400, polyethylene glycol 600, polyethylene glycol 6000, polyethylene glycol 4000, polyvinyl alcohol 1788 and polyvidone K30; the antifreezing agent is selected from one or more of ethylene glycol, propylene glycol, glycerol and urea; the preservative is one or more of sodium benzoate or cason; the acid is selected from one or more of phosphoric acid, citric acid and sulfuric acid; the water is deionized water.
4. The insecticidal composition according to claim 3, wherein when said formulation is a suspension, said adjuvants are an emulsifier, a dispersant, a wetting agent, a thickener, an antifoaming agent, an antifreezing agent, a preservative and a solvent; the preparation method comprises the following steps: adding water, a dispersing agent, a wetting agent, imidacloprid, a part of thickening agent, a defoaming agent, an antifreezing agent and a preservative into a shearing kettle, shearing uniformly, grinding by using a 50L horizontal sand mill until the particle size D90 is less than or equal to 3um, adding the rest of thickening agent and cartap, and shearing uniformly to obtain the suspending agent;
when the dosage form is a dispersible oil suspending agent, the auxiliary materials are a dispersing agent, an emulsifying agent, a thickening agent and a solvent; the preparation method comprises the following steps: sequentially adding a solvent, an emulsifier, a dispersant, a thickener, cartap and imidacloprid into a shearing kettle, shearing uniformly, and grinding by using a horizontal sand mill until the particle size D90 is less than or equal to 5um to obtain the dispersible oil suspending agent;
when the dosage form is a water dispersible granule, the auxiliary materials are a wetting agent, a dispersing agent, a disintegrating agent and a filler; the preparation method comprises the following steps: sequentially adding a filler, a disintegrating agent, cartap, imidacloprid, a wetting agent and a dispersing agent into a stirring device, uniformly stirring, crushing to 800-1250 meshes by using an airflow crusher, kneading the obtained powder material by adding water, preparing into cylindrical granules with the diameter of 0.5 or 0.8mm by using a rotary extrusion granulator, and drying and screening to obtain the water dispersible granules;
when the dosage form is a broadcast granule, the auxiliary materials are a binder and a filler; the preparation method comprises the following steps: adding the cartap, the imidacloprid, the binder and the filler into a stirring device, uniformly stirring, and extruding and granulating by using double rollers to obtain the broadcast granules with the particle size of 2-6 mm;
when the dosage form is microemulsion, the auxiliary materials are emulsifier, organic solvent and water; the preparation method comprises the following steps: dissolving imidacloprid and emulsifier completely with solvent, adding water, stirring, adding water-soluble cartap, stirring and dissolving completely to obtain the microemulsion;
when the preparation is an aqueous solution, the auxiliary materials are an emulsifier, acid and water; the preparation method comprises the following steps: adding acid into water, adding imidacloprid into the acid solution, adding an emulsifier after complete dissolution, stirring to clear, and finally adding cartap, stirring and dissolving completely to obtain the aqua.
5. Use of the insecticidal composition according to any one of claims 1-4 for control of root-knot nematodes and rice stem borers.
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| CN101313678A (en) * | 2007-05-30 | 2008-12-03 | 梁建忠 | Method for preparing cartap and imidacloprid combined water dispersible powder |
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| CN101313678A (en) * | 2007-05-30 | 2008-12-03 | 梁建忠 | Method for preparing cartap and imidacloprid combined water dispersible powder |
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