162 results about "Fenvalerate" patented technology

The invention discloses an organic tobacco field planting and field managing method, which comprises the following steps: preparing land and ridging, transplanting tobacco seedlings, applying fertilizer in fields, performing field management and pest control, and harvesting manually, wherein the section of a ridge is ladder-shaped, the ridge spacing is 100-120cm, the ridge height is 20-25cm, drainage ditches are formed according to the height of terrain, the tobacco seedlings are transplanted with the plant spacing of 45-55cm, watered with enough water, covered with soil, and covered with a mulching film, and the mulching film is broken to expose the seedlings, base fertilizer is applied before ridging and during the transplanting and topdressing is applied after the transplanting, the field management comprises seedling deficiency check and seedling supplementation, film removal, earthing up, water replenishing, topping, leaf retention and sprout removal, and the pest control comprises comprehensive control and chemical control. According to the organic tobacco plantation and management requirements, organic fertilizer is adopted, and a harmless medicament or biological agent is used for the pest control, so that the organic production of the tobacco is realized. Compared with the regular tobacco production method, lead, mercury, cadmium, arsenic, copper, chromium and other harmful elements as well as the residual quantities of imidacloprid, emamectin benzoate, permethrin, fenvalerate, thiamethoxam and other main pesticides can be obviously reduced.

The re-compounded pesticide composition includes fipronil in the weight ratio to other component of 0.02-50, and at least one of the following pesticides: lambda-cyhalothrin, fenpropathrin, cycloprothrin, esfenvalerate, etofenprox, etc. It may have functional assistant, diluent or carrier added to compound into oil emulsion, soluble liquid, super low capacity sprayed agent, water emulsion, microemulsion or other preparation forms. It has wide pesticidal spectrum, high activity, low cost, less resistance and other features, and may be applied in preventing and controlling pests of rice, vegetable, cotton, corn, fruit tree, tobacco and other crops.

The invention discloses deoxyribonucleic acid (DNA) of novel esterase. The nucleotide sequence of the DNA is shown as SEQ ID NO.1, and the amino acid sequence of the DNA is shown as SEQ ID NO.3. The invention also discloses an expression vector which contains the DNA of the novel esterase, recombinant esterase and the application of the recombinant esterase to the degradation of pyrethroid pesticide residues. The novel esterase and the recombinant esterase have efficient soluble expression in a bacillus coli expression system, and the recombinant esterase has efficient degrading effects on cyhalothrin, cypermethrin, fenvalerate, deltamethrin and the like.

The pesticide composition containing tebufenozide includes tebufenozide as the first active component and one kind of the second active component selected from monosultap, bisultap, triazophos, chlorpyrifos, trichlorfon, phoxim and other five kinds of pesticides. The present invention has reasonable component, low use, cost, and high pesticidal effect higher than the accumulation of its components.

The invention relates to a synergy insecticidal composition containing dinotefuran and pyrethrin pesticide and purpose thereof. The synergy insecticidal composition contains main effective components of dinotefuran and pyrethrin pesticides. The pyrethrin is one selected from efficient cypermethrin, cyhalothrin, cyhalothrin, bifenthrin, alphacypermethrin, deltamethrin, fenvalerate, cypermethrin, fenpropathrin, silafluofen, efficient cyhalothrin and ethofenprox. The dinotefuran and pyrethrin are in a mass ratio of 0.1-80:0.1-50. The insecticidal composition can generate efficient synergism, overcome and delay resistance of insects and expand control spectrum, and has fast insecticidal speed and reduced drug usage cost. The insecticidal composition of the invention can be used for controlling homoptera insects of aphid and whitefly, etc. and has an effect obvious better than that of a single dose.

The invention relates to a plant growth nutrient solution which is prepared from the following raw materials in parts by weight: 1.5 parts of zinc sulfate, 0.75 part of boric acid, 9 parts of urea, 7 parts of monopotassium phosphate, 2 parts of triacontanol, 14 parts of methyl alcohol, 1.5 parts of aspirin, 5 parts of potassium permanganate, 0.5 part of polyoxyethylene sorbitan glyceryl monooleate, 0.7 part of fenvalerate, 0.5 part of o-cresol, 3 parts of nicotinamide, 4 parts of ethylene oxide, 14 parts of ethylene, 2 parts of vitamin B6, 3 parts of sodium selenite, 5 parts of ammonium dihydrogen phosphate, 5 parts of sodium benzoate, 2 parts of sodium dodecyl benzene sulfonate, 1.5 parts of heteroauxin, 1.5 parts of gibberellin, 1.5 parts of cytokinin, 4 parts of garlic and 450 parts of deionized water. The plant growth nutrient solution has the beneficial effects that the rapid growth of plants is promoted, the mature periods of melons and fruits are earlier than planned within more than 10 days, the yields of melons and fruits are increased by more than 60%, and insect pests in each stage of the plants can be prevented and controlled.

The invention relates to a pesticide missible oil preparation which comprises a pesticide active constituent, an emulsifying agent, a cosolvent and a solvent, wherein the solvent is glycerol; a TG-2201 emulsifying agent is preferably selected as the emulsifying agent; absolute ethyl alcohol is preferably selected as the cosolvent; the pesticide active constituent is a compound of abamectin and high-efficiency cypermethrin, a compound of chlorpyrifos and the high-efficiency cypermethrin, or a compound of fenvalerate and synergistic phosphorus. Because the glycerol is used for replacing toluene and dimethylbenzene of a traditional solvent, the active drug effect of the pesticide missible oil preparation is better than that of a missible oil preparation using the toluene or the dimethylbenzene as a solvent, and moreover, the replacement application of the glycerol used as the solvent solves the problem of toxic and side effects generated by using a large quantity of the toluene and the dimethylbenzene, thus the pesticide missible oil preparation belongs to a green environmental-friendly novel pesticide.

The invention relates to a detection method for fenvalerate, a molecularly imprinted sensor for fenvalerate and a preparation method for the sensor. The detection method comprises the following steps: providing a molecularly imprinted electrochemical sensor for fenvalerate and a DPV detection system thereof and fitting a concentration calculation formula; providing sample liquid to be detected; detecting the peak current I[sample] of the sample liquid; and calculating the concentration of fenvalerate. The molecularly imprinted sensor comprises a gold electrode used as a substrate and a molecularly imprinted sensor membrane for fenvalerate prepared on the surface of the gold electrode by using an electropolymerization method, wherein the sensor membrane retains molecularly imprinted holes used for recognition of fenvalerate molecules. The preparation method for the sensor comprises the following steps: pretreating the gold electrode; preparing polymer fluid; preparing the polymer membrane; and eluting fenvalerate template molecules. According to the invention, an electrochemical detection way is employed in the invention; a great amount of complex pretreatment work is avoided, used apparatuses are simple, cost is low, and detection of fenvalerate in an on-site environment is realized. The sensor provided in the invention has the advantages of a simple preparation process, good selectivity and high sensitivity.

The invention relates to a method for preventing diseases and insect pests of a peach tree. The method comprises a disease prevention method and an insect pest prevention method, wherein the disease prevention method comprises steps as follows: at the end of the blooming period of the peach tree, insecticide is sprayed once for every 5-10 days and continuously sprayed for five times; the insect pest prevention method comprises steps as follows: (1) after flowers of the peach tree fade, 3,000-5,000 times of tianda pesticide is sprayed, and an abamectin mixed preparation is sprayed for 2-4 times; (2) a mixture of 2,000 times of 4.5% of efficient cypermethrin emulsifiable concentrate and 3,000 times of 20% of fenvalerate is sprayed in May in the same year; and (3) a mixture of 2,000 times of 4.5% of efficient cypermethrin emulsifiable concentrate and 3,000 times of 20% of fenvalerate is sprayed in June in the same year. The method effectively prevents morbidity of the peach tree, improves output of peaches, and increases income of a fruit grower.

The invention discloses a special anti-mosquito agent for textiles. The special anti-mosquito agent for textiles comprises, by weight, 0.5-2.0% of plant essential oil, 10-20% of a pesticide, 10-20% of a surfactant, 30-50% of a solvent, 5-10% of a fastness enhancer and 10-20% deionized water; the plant essential oil is at least one of lemongrass essential oil, lavender essential oil, tea tree oil, Pelargonium hortorum essential oil, lemon essential oil and mint essential oil; and the pesticide is at least one of tetramethrin, meperfluthrin, fenvalerate and permethrin. The special anti-mosquito agent for textiles has a good mosquito repelling effect, and has an ideal repelling effect on mosquitoes, sand flies, ticks and other hemophagous bugs.

The invention discloses an insecticidal composition comprising spirotetramat and pyrethroid. The composition is mainly characterized in comprising an active component A, an active component B, and balance of auxiliary agents. The active component A is spirotetramat, and the active component B is any one of permethrin, lambda-cyhalothrin, fenvalerate, beta-cyfluthrin, deltamethrin, and fenpropathrin. A weight ratio of the active component A to the active component B is 60:1-1:60. The composition can be prepared into wettable powders, water-dispersible granules, suspensions, suspension emulsions, water emulsions, micro-emulsions, microcapsule suspensions, and microcapsule-microcapsule suspensions. The composition provided by the invention can control various pests, and has substantial synergetic effect and sustained-release effect. The composition is safe to human and animals, and has the advantages of no phytotoxicity and good environmental compatibility. The preparation has the advantages of enhanced adhesion, rain erosion resistance, long duration, and the like.

The invention discloses a gas chromatography method for detecting pesticide residue amounts of bifenthrin, fenpropathrin, cyhalothrin, cyfluthrin, cypermethrin, fenvalerate and deltamethrin in different texture soils (clay, loam soil and sandy soil). The gas chromatography is characterized by taking an acetone-petroleum ether (V:V=1:1) mixed solvent as an extraction agent, and performing trace analysis on an extracting solution on a gas chromatograph after the extracting solution is concentrated by using a rotary evaporator and purified by using a Florey silica column. The gas chromatography method has the advantages that firstly, the pesticide content of seven pyrethroids and a peak area have good linear relationship (within the range of 0.05 to 5.0 mg/kg), the target objected separation effect achieved by an HP-5 chromatographic column is good, the detection result accuracy is high, the reproducibility is high, and the sensitivity of the method meets the technical requirement on pesticide residue detection; secondly, the sample pretreatment operation is simple, convenient and rapid, the detection time is shortened, the work efficiency is improved.

The invention discloses hybridoma cell strain No. 15, and pyrethroid-resistant mass selection monoclonal antibody produced by the hybridoma cell strain No. 15, and belongs to the field of immunochemical technology.<{EN3}>The monoclonal antibody secreted by the cell strain is detected by indirect competition euzymelinked immunosorbent assay, and is capable of realizing cross reaction with monoclonal antibodies of 10 kinds of pyrethroids including fenpropathrin, cypermethrin, beta-cypermethrin, cyfluthrin, lambda-cyhalothrin, fenvalerate, deltamethrin, fluvalinate, cyphenothrin and alphamethrin; IC50 ranges from 3.2 to 50ng/ml; the pyrethroid-resistant mass selection monoclonal antibody produced by the hybridoma cell strain No. 15 can be used for development of colloidal gold immunochromatography test strips and immunosensors, is capable of providing raw materials for immunodetection of pyrethroid residue in agricultural products, and possesses practical application value. The monoclonal antibody secreted by the cell strain is detected by indirect competition euzymelinked immunosorbent assay, and is capable of realizing cross reaction with monoclonal antibodies of 10 kinds of pyrethroids including fenpropathrin, cypermethrin, beta-cypermethrin, cyfluthrin, lambda-cyhalothrin, fenvalerate, deltamethrin, fluvalinate, cyphenothrin and alphamethrin; IC50 ranges from 3.2 to 50ng/ml; the pyrethroid-resistant mass selection monoclonal antibody produced by the hybridoma cell strain No. 15 can be used for development of colloidal gold immunochromatography test strips and immunosensors, is capable of providing raw materials for immunodetection of pyrethroid residue in agricultural products, and possesses practical application value.

The invention discloses a fenvalerate artificial partial antigen, the molecular structure is in the right, and n=1-5. The invention also provides the method for synthesizing fenvalerate artificial partial antigen, and the application of the product as raw material of antigen system for animal immunization.

The invention relates to a hapten, a preparation method and application thereof, in particular to a pyrethroid pesticide hapten, a preparation method and application thereof. The pyrethroid monoclonal antibody hybridoma cell line F-3-2 screened based on the pyrethroid pesticide hapten is preserved in China General Microbiological Culture Collection Center with a preservation number of CGMCC No.13842. The titer of a pyrethroid monoclonal antibody secreted by the cell line reaches 2*10<5>, the cross reaction rate with deltamethrin is 100%, the cross reaction rate with cyhalothrin is 50.9%, the cross reaction rate with fluvalinate is 103.6%, the cross reaction rate with cyfluthrin rate is 70.7%, the cross reaction rate with fenvalerate is 74.4%, and the cross reaction rate with benzene permethrin is 69.0%. The pyrethroid pesticide hapten provided by the invention provides the condition for immunodetection of pyrethroid pesticide multi-residue, and has practical application value.

The invention discloses a pesticide for rice seedlings. The pesticide comprises the following components in parts by weight: 15-20 parts of fenvalerate trichloride, 16-18 parts of acetophenate, plifenate technical, 17-20 parts of permethrin, 10-12 parts of tetramethrin, 0.06-0.08 part of bacteriophage powder, 2-6 parts of pepper, 18-23 parts of radix stemonae, 2-7 parts of chinaberry fruits, 8-13 parts of camphor, 3-9 parts of turpentine, 20-26 parts of cordate houttuynia and 80 parts of water. The pesticide has the advantages of being efficient, targeted, environmentally friendly, free of secondary toxicity, residue, and pollution, and nuisanceless, and is a novel pesticide; the ecological balance can be kept; an important guarantee is provided to realize ecological agriculture, green ecological agriculture and green business; the prospect is broad.

The invention relates to a drug for external use for preventing and treating scabies, and mainly solves the problems that organic phosphorus medicines for preventing and treating scabies are high in toxicity, short in persistence and poor in therapy efficacy and pyrethroid medicines are high in expenses and easy to generate resistance in the prior art. The drug for external use is characterized by comprising, by weight, 30-45% of phoxim, 10-15% of fenvalerate, 5% of XN-100, 8-10% of 0301C, and the balance being dimethylbenzene. The drug for external use for preventing and treating scabies is low-cost, good in safety, good in therapy efficacy, long in persistence and not easy to generate resistance.

The invention relates to a fenvalerate pesticide detection method. A prefabricated DNA electrochemical biosensor is used for detecting an object to be detected and comprises a carbon fiber electrode serving as a substrate, wherein the surface of the carbon fiber electrode is successively overlaid and provided with a peroxide polypyrrole film, a nanogold layer and a DNA layer from inside to outside; the fenvalerate generates electrochemistry behaviour on the DNA electrochemical biosensor; the DPV (differential pulse voltammetry) peak current value of the fenvalerate is measured to determine the density of the fenvalerate. The invention utilizes the DNA electrochemical biosensor to detect fenvalerate pesticide, utilizes the electrochemical detection mode, and can save complex pretreatment works. The instrument is simple, has low cost and realizes on-field detection; in addition, disposable carbon fiber modified electrodes are used. The DNA electrochemical biosensor has the advantage of simple and easy preparation steps, and the electrode can be modified in advance, thus realizing batch detection and saving time.