33 results about "Pesticide research" patented technology

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 relates to a bacillus licheniformis used as a pesticide surfactant and an application thereof, belonging to the field of biological control and pesticide research and application in the plant protection discipline. The bacterial strain of the present invention is a high-efficiency biocontrol bacterium isolated and screened from plant rhizosphere soil—Bacillus licheniformis ( Bacillus licheniformis ) W10 strain, the preservation number of this strain in China General Microorganism Culture Collection Management Center is CGMCC No.14859. The present invention uses soybean cake powder, cornstarch, etc. as the substrate for the fermentation medium, and the prepared bacterial strain fermentation liquid bacterial agent can improve the surface tension of the pesticide, reduce the contact angle, have a good surfactant function, and also have the effect of preventing and controlling plant diseases. effect. Therefore, the fermented broth microbial agent of the present invention can not only be used as a surfactant in the processing and preparation of pesticide suspensions, but also can prevent and control diseases, showing broad application prospects.

The invention discloses an application of eupatorium adenophorum vinegar liquid as plant nematocide, belonging to the technical field of botanical pesticide research and development. The eupatorium adenophorum vinegar liquid is prepared by the following method: cutting the eupatorium adenophorum into small sections to be added into a retort; heating the retort 1; condensing and collecting all fractions at the temperature of 90 DEG C-300 DEG C under normal pressure; and obtaining the collected liquid, namely the eupatorium adenophorum vinegar liquid. The application of the eupatorium adenophorum vinegar liquid as plant nematocide shows that: the eupatorium adenophorum vinegar liquid has highly effective nematicidal activity to plant nematodes, and the nematocide effect of 150-25 times of the eupatorium adenophorum vinegar liquid can achieve 70% to 100%.

The invention discloses a pyridine-ethylbenzene-ether oxime esterpyrene ethylbenzene oxime-ethers esters compound, and a preparation method and application thereof, belonging to the technical field of agricultural chemistry. The preparation method comprises the following steps of adopting p-hydroxy benzaldehyde as a raw material, and reacting with potassium carbonate in DMF (Dimethyl Formamide) to obtain an intermediate product II; reacting enabling the intermediate product II to react with sodium hydride to obtain sodium alkoxide and then reacting with 2-fluoropyridine to obtain an intermediate product III; reacting enabling the intermediate product III to react with pyridine and hydroxylamine hydrochloride in methyl alcohol to obtain an intermediate product IV; reacting enabling the intermediate product IV to react with various carboxylic acid, DCC and pyridine in dichloromethane to obtain the pyridine-ethylbenzene-ether oxime esterpyrene ethylbenzene oxime-ethers esters compound as shown by an end product I. The compound and a preparation thereof provided by the invention has have insecticide and mite ovicidal activity, favorable ovum killing activity, and higher pesticide research value.

The invention provides the application and extraction method of iquamycin compounds in resisting tobacco red spot disease; it belongs to the technical field of pesticide research, and the iquamycin compounds can inhibit the germination of red spot fungus spores at low concentrations, However, carbendazim at the same concentration has no such effect, and the izhemycin compound has great application potential.

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 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 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 isabove 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.