33 results about "Pesticide research" patented technology

The invention disclose a pyridine salt compound containing 1,3,4-oxadiazolyl (thiadiazolyl) and a preparation method and application thereof. The compound is of the structure shown in the general formula (I). Based on the 1,3,4- oxadiazole (thiadiazole) thioether (sulfoxide or sulfone) compound, a pyridine base capable of improving the biological activity of the target compound is introduced into the system, and a series of 1,3,4- oxadiazole (thiadiazole) oxygen ether, thioether, sulfoxide or sulfone amphipathic molecules containing pyridine salt are synthesized. It is found that the compound has the good restraining effect on pathogenic bacteria and fungi such as Xanthomonas oryzae pv. oryzae, Ralstonia solanacearum, Xanthomonas axonopodis pv. citri, Gibberella zeae, Phytophythora infestans, Rhizoctonia solani, Borrytis cinerea, Fusarium oxysporum and Phytophythora infestans, and provides an important scientific foundation for new pesticide research, development and creation.

The invention belongs to the technical field of pesticide, particularly relates to an agriculture germicide containing JS399-19 with 1-80% of active constituents. The JS399-19 belongs to 2-cyanoacrylate, which is a novel germicide developed by Jiangsu Pesticide Research Institution Co., Ltd. The invention has comparatively high sterilizing activity to various pathogenic bacteria. The invention is mainly applied to the prevention and treatment to leaf spot, scab, rust, powdery mildew, wheat scab, and alternaria leaf spot.

The invention provides a class of compounds with novel 5-oxime ester B2a structures, preparation methods of the compounds and applications that the compounds are used as insecticides, acaricides and nematicides. Structural formulae of the compounds are represented as a formula I, a formula II or a formula III. According to the invention, the structure of B2a, a byproduct of avermectin productive process, is optimized; a series of 5-oxime ester B2a compounds with novel structures is designed and synthesized; comprehensive insecticidal activity determination is performed on the compounds; and compounds with good pesticide effects are found. The reaction route is simple; the products have good insecticidal activity; the biological activity ratio of most compounds surpasses a control insecticide avermectin; and the biological activity increases obviously, and therefore, the compounds provided by the invention have very high pesticide researching value.

The invention discloses an assay method for field imago acquisition and ovum collection of rice leaf rollers and the virulence of pesticides to rice leaf rollers. During the imago occurrence period of the rice leaf rollers, rice filed imagoes are netted into a plastic cup which is sealed by a preservative film, cotton balls are fixed at the bottom in the cup through double faced adhesive tapes, sugar water or hydromel supplements nutrition to the imagoes, the imagoes spawn on the inner wall of the plastic cup, the ovum hatched larvae are directly subjected to bioassay, the larvae don't have to be bred indoors, and the rice seedling impregnation method for rice seedlings cultivated for 2-4 weeks (the height of 20-25cm) is adopted for determination. The method prevents larva breeding and overcomes the problem that the rice leaf rollers cannot be bred for large scale and medicament screening cannot be carried out; and moreover, the invention provides a simple and easy rice leaf roller virulence determination method for pesticide research and development organizations, so that the biological assay of the rice leaf rollers, the mixed formulation screening, and resistance monitoring are possible.

The invention relates to a method for preparing myristicin from Xinjiang ligusticum. The method uses the root of Xinjiang lingusticum, and the lower layer of essential oil is extracted by water vapor distillation after drying, grinding and screening; then silica gel column chromatography is carried out, and after gradient elution is carried out on petroleum ether and methylene dichloride, the stream part which is purple under an ultraviolet lamp on a GF254 silica gel plate is collected and gathered, thus obtaining the crude product, the myristicin content of which is above 90 percent; and then the crude myristicin is mixed with an organic alcohol solvent, and after refrigeration and crystallization at ultra-low temperature, white crystal can be obtained, the myristicin content of which is above 99 percent, and at room temperature, the product is achromatic oil liquid. The compound has strong isolated fungicidal activity to plant pathogenic fungi, wheat scab fungi and the like. The method for refining the myristicin has the advantages of easily obtained materials, simple operation, high yield and high purity of myristicin, and the myristicin can be used as pure myristicin required by medicine and pesticide research and development.

The invention belongs to the technical field of pesticide research and development and in particular discloses a plant volatile oil slow-release core agent and application thereof. The plant volatileoil slow-release core agent consists of volatile oil monomers and a carrier, wherein the volatile oil monomers comprise L-carvone and D-limonene in a weight ratio of (5-10):(1-5). The plant volatile oil slow-release core agent disclosed by the invention has a good prevention effect on tomato gray mold in a protected land, is simple in preparation method, and is particularly applicable to popularization and application in vegetable planting in protected lands.

The invention discloses an acyl thiourea compound containing a 1,3-dimethyl-1H-pyrazole structure and a preparation method and application thereof. The preparation method comprises the following steps: firstly using ethyl acetoacetate, triethyl orthoformate and methylhydrazine as raw materials to synthesize 1,3-dimethyl-1H-pyrazole-4-formic acid, performing the acylating chlorination to obtain 1,3-dimethyl-1H-pyrazole-4-formyl chloride, and reacting with ammonium thiocyanate and substituted anilines to obtain a final product (I). The raw materials are simple and are easily obtained, the preparation method is simple, the aftertreatment is convenient, and the product yield is high. The compound has the antifungal activity, and has the good sterilizing effect in allusion to sclerotinia sclerotiorum, rhizoctonia solani, Cercospora arachidicola Hori, Macrophoma kawatsukai, and alternaria solani especially. The foundation is provided for new pesticide research and development.

The invention discloses a pyrethroid compound as well as a preparation method and an application thereof, and provides a preparation method of the pyrethroid compound 1-acetenyl-2-methyl-2-pentenyl-(trans-dextrorotation)-3-(2-chlorine-3,3,3-trifluoro-1-propenyl)-2, 2-dimethylcyclopropane carboxylic ester, and an application thereof in the aspect of preventing and treating sanitary insect pests. The compound is prepared from trans-dextrorotation-3-(2-chlorine-3,3,3-trifluoro-1-propenyl)-2,2-dimethylcyclopropane carboxylic ester and 1-acetenyl-2-methyl-amylene-2-alcohol in an esterifying manner, is one of pyrethroids, and belongs to synthetic organic pesticides. The pyrethroid compound is simple in technique and easy to industrially popularize; the product is used for exterminating family health pests and mosquitoes, flies, german cockroach and the like, has efficient and low-toxicity effects, and is a new pesticide researched for preventing the sanitary insect pests from generating drug resistance on pyrethroid drugs.

The invention provides a spiroheterocyclic tetrahydropyran compound as well as a preparation method and application thereof. The structure of the spiroheterocyclic tetrahydropyran compound is shown as a formula (I). The compound disclosed by the invention has stable chemical properties, higher insecticidal activity and excellent insecticidal activity under the condition of lower medicament concentration, particularly has higher insecticidal activity on aphids and red spiders, is a novel and efficient biopesticide, can relieve the drug resistance of diseases and pests to spirotetramat or abamectin drugs, and has a broad application prospect. The compound has a very high pesticide research value, and has a wide application prospect in agriculture.

The invention belongs to the technical field of agricultural technologies, particularly relates to a mixing device for agricultural technology pesticide research and development. In order to solve theproblems that most of mixing devices for traditional pesticide research and development are simple in structure, single in mixing mode and common in mixing effect, the mixing device is provided, themixing device comprises a base with supporting legs fixed to the four corners of the outer wall of the bottom through bolts. A mixing tank is fixed to the outer wall of the top of the base through bolts, and a feeding mechanism is fixedly installed at the top end of the mixing tank. Through the arrangement of a rotating motor, a rotating rod and an incomplete gear can be driven to rotate, a drivenring frame is driven to move back and forth in the horizontal direction under the staggered transmission action of the incomplete gear and convex teeth, and preliminary mixing treatment is conductedthrough an arc-shaped shifting plate; and through the arrangement of a sliding drawing rod, the sliding drawing rod can move back and forth along with the driven ring frame to drive hinge shifting plates on the two sides to be staggered or folded or unfolded, so the further shifting effect on materials is achieved.

The invention provides a pesticide nano drug-loaded particle framework material as well as a preparation method and application thereof, and belongs to the technical field of pesticide research and development. The pesticide nano drug-loaded particle framework material provided by the invention is prepared from the following reaction raw materials in parts by mass: 5-15 parts of 2-aminoterephthalic acid and 8-25 parts of soluble ferric iron salt, the reaction raw materials are dispersed in the reaction solvent N, N-dimethylformamide for reaction. The invention provides a pesticide nano drug-loading particle framework material which is obtained by taking ferric iron as a metal node and carrying out amino modification on the surface of the ferric iron, the particle size of the pesticide nano drug-loading particle framework material is 150-400nm, imidacloprid, tebuconazole and thifluzamide can be loaded, and the pesticide nano drug-loading particle framework material has a relatively good controlled release effect and bactericidal activity, and can be used for preparing the pesticide nano drug-loading particle framework material. The negative influence of effective components of the pesticide on the plant growth can be relieved, so that the plant growth is promoted.

The invention provides a peach latent mosaic viroid molecule standard sample and a preparation method thereof. The preparation method specifically comprises the processes of selecting raw materials of PLMVd, preparing a standard sample, checking uniformity and stability, carrying out qualitative detection, determining value and the like. The preparation method of the standard sample comprises the following steps: extracting virus RNA in a PLMVd virus solution, carrying out RT-PCR reaction, amplifying and purifying target gene fragments, connecting and transforming target fragments; and recycling plasmids. The peach latent mosaic viroid molecule standard sample is high in stability and high in uniformity, is suitable for rapid detection and determination of the peach latent mosaic viroid, provides the standard sample demand for detection research, pesticide research and application research of the peach latent mosaic viroid, and can be widely applied to disease surveillance and control in the agricultural production and environment and surveillance and detection of the peach latent mosaic viroid in import and export trade. Through application of the standard sample prepared by the method, different laboratory results can be compared, so that the quality control of the laboratories can be ensured.

The invention provides a tomato spotted wilf virus molecule standard sample and a preparation method thereof. The preparation method specifically comprises raw material selection of TSWV, preparation of a standard sample, uniformity and stability check, qualitative detection, value fixing and the like. The method for preparing the standard sample comprises the following steps: extracting virus RNA from TSWV virus solution, performing RT-PCR reaction amplification, purifying target gene fragments, connecting and transforming target fragments, and recovering plasmid. The tomato spotted wilf virus molecule standard sample disclosed by the invention is high in stability and uniformity, and suitable for rapid detection and confirmation of the tomato spotted wilf virus, provides a standard sample for detection research, pesticide research and application research of the tomato spotted wilf virus and can be widely applied to epidemic surveillance in agricultural production and environments and monitoring and detection of viruses in import and export trade. By using the standard sample disclosed by the invention, comparison of different laboratory results can be realized, so that the quality control of the laboratory is guaranteed.

The invention discloses an acyl thiourea compound containing 1-methyl-3-trifluoromethyl-1H-parazole structure, as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, synthesizing 1-methyl-(trifluoromethyl)-1H-parazole-4-formic acid from ethyl 4,4,4-trifluoroacetoacetate, triethyl orthoformate and methylhydrazine serving as raw materials; secondly, performing acylating chlorination to obtain 1-methyl-(trifluoromethyl)-1H-parazole-4-formyl chloride; and finally, reacting with potassium thiocyanate and substituted aniline to obtain a final product (I). The compound is simple and easily available in raw materials, simple in preparation method, convenient in post treatment and high in product yield, has an antifungal activity, especially has an excellent sterilizing effect for fusarium wilt, bacterial angular leaf spot, grey mold and brown spots of cucumber, and lays foundation for novel pesticide research and development.

The invention provides an application of an equisetin compound in resisting tobacco brown spot and an extraction method of the equisetin compound. The invention belongs to the technical field of pesticide research; the equisetin compound can inhibit spore germination of alternaria alternata under the condition of low concentration, carbendazim does not have the effect under the same concentration,and the equisetin compound has quite great application potential.

The invention belongs to the technical field of pesticide research and development and specifically relates to insecticidal synergistic composition containing veratrine. The insecticidal synergistic composition containing the veratrine is characterized in that effective ingredients include the veratrine and lepimectin, and a weight ratio of the veratrine to the lepimectin is (1 to 50) to (50 to 1). The insecticidal synergistic composition disclosed by the invention has an obvious synergistic interaction effect, overcomes and delays pest resistance, expands a preventing and treating spectrum, has a quick insecticide speed and obviously improves a preventing and treating effect.

The invention provides abamectin B2 derivatives as well as a preparation method and application thereof. The structure of the abamectin B2 derivatives is shown as a formula (I). The abamectin B2 with low availability in the abamectin production process is subjected to structure optimization, a series of abamectin B2 derivatives with brand-new structures are designed and synthesized, and the abamectin B2 derivatives have stable chemical properties, higher insecticidal activity and more excellent insecticidal persistence, can effectively prevent and treat various in-vivo and in-vitro parasites such as parasites, lice, mites and flies of livestock, especially have a special effect on cow nematode diseases, are a novel and efficient abamectin biopesticide, have a very high pesticide research value, and have a wide application prospect in agriculture and livestock industry.