11 results about "Downy mildew" patented technology

This invention relates to the field of pesticide technology, specifically to a fungicidal composition, its preparation method, and its uses. The invention provides a fungicidal composition comprising an active ingredient, a first functional component, a second functional component, and an adjuvant; the active ingredient comprises fluthiazopyrone and cyazofamid; the first functional component comprises at least one selected from silica, titanium dioxide, and zinc oxide; the second functional component comprises at least one selected from citric acid, acetic acid, benzoic acid, urea, and triethanolamine. By introducing specific first and second functional components, this invention synergistically works with the active ingredient, effectively overcoming the key defects of fluthiazopyrone's easy photodegradation and cyazofamid's easy hydrolysis, thus improving the stability of the compound formulation; while ensuring the excellent control efficacy and resistance management advantages of both against oomycete diseases such as grape downy mildew, it extends the duration of action and weather resistance of the agent, providing a more stable, efficient, and long-lasting solution for field application.

The application relates to a pesticide composition containing silicon-rich rings and thiamethoxam and application thereof in prevention and treatment of downy mildew, and belongs to the technical field of agricultural pesticides. In the application, heat-sensitive silicon-rich ring raw medicine is coated with a capsule wall material to form microcapsules, so that the chemical stability of the active ingredient in the storage process is effectively improved. The results of potting test show that the branch number, effective branch number and fruiting number of the pepper plants treated with the pesticide composition are significantly higher than those of the single-dose treatment group, which indicates that the pesticide composition can promote the vegetative growth and reproductive growth of the pepper, help to build a high-yield plant type, and improve the yield potential of crops. Field test data show that the prevention and treatment effect of the pesticide composition on the pepper downy mildew reaches 90.2%, which is significantly better than that of the single-dose treatment group. This indicates that the combination of the silicon-rich rings and thiamethoxam plays a synergistic effect in the prevention and treatment of the pepper downy mildew.

This invention relates to the field of pesticides, specifically to a fungicide composition for foliar spraying, its preparation method, and application scheme. The active ingredients of the fungicide composition include quinoline copper and phosphite A. Phosphite A is selected from at least one of phosphorous acid, alkali metal salts or alkaline earth metal salts of phosphorous acid, alkylphosphonic acids containing C1-C6 groups of phosphorous acid or alkali metal salts of alkylphosphonic acids, alkaline earth metal salts, and aluminum salts. In the fungicide composition, the weight ratio of quinoline copper to phosphite A is 99:1 to 1:99. The fungicide composition of this invention has high activity against bacterial and fungal diseases occurring in various crops, such as canker and downy mildew, and also exhibits significant synergistic effects. It not only improves the antibacterial or bacteriostatic effect but also broadens the control spectrum. Simultaneously, it can reduce the number of applications and alleviate environmental pressure, thereby achieving the effect of prevention-oriented and integrated pest management.

The application discloses a grape downy mildew adaptive image enhancement and detection integrated method based on Bayesian optimization, and comprises the following steps: acquiring a grape canopy visible light image collected by a UAV; and performing adaptive image enhancement processing on the grape canopy visible light image to obtain an enhanced image; wherein the adaptive image enhancement processing adopts a combination mode of power intensity mapping and an unsharp mask, and the execution sequence of the two enhancement modes and the hyperparameters thereof are adaptively determined in a two-stage process through Bayesian optimization; and the enhanced image is input into a trained GDM-DETR detection model to obtain grape downy mildew detection results, wherein the results comprise the category and the bounding box position of a disease target; the application not only improves the accuracy and real-time performance of the model in detecting grape downy mildew, but also reduces the number of model parameters and the calculation complexity.

The application discloses a pesticide application method based on a grapevine downy mildew prediction model, relates to the technical field of agricultural plant protection, and mainly aims to provide a pesticide application method based on a grapevine downy mildew prediction model, which can dynamically simulate a complete disease epidemic process from overwintering inoculum release to secondary cycle establishment. The application provides a pesticide application method based on a grapevine downy mildew prediction model, which directly outputs an infection risk early warning through the prediction model, helps to reduce the use frequency and dosage of pesticides, reduces the cost and environmental risk, and meanwhile, can be calibrated locally according to different regions or varieties. The construction framework can also provide a reference for the development of other air-borne and rain-borne fungal disease prediction models, and then a mechanism model capable of dynamically simulating a complete disease epidemic process from overwintering inoculum release to secondary cycle establishment is constructed, so that the technical effect of improving the prediction accuracy is achieved.

This application relates to a hydrazine carbamate compound, its preparation method, and its uses. The hydrazine carbamate compound is a compound of formula (I) or formula (II), or an isotopically labeled compound thereof, or an optical isomer, geometric isomer, tautomer, or mixture of isomers thereof, or a pharmaceutically acceptable salt thereof. The hydrazine carbamate compounds provided in this application exhibit broad-spectrum antibacterial activity against plant pathogens such as pathogenic fungi, particularly against *Tobacco Red Spot*, *Chinese Cabbage Black Spot*, *Tomato Early Blight*, *Apple Anthracnose*, *Curvularia*, *Wheat Fusarium*, *Watermelon Fusarium*, *Potato Dry Rot*, *Rice Blast*, *Pumpkin Fusarium*, *Cotton Fusarium*, *Apple Ring Spot*, *Apple Rot*, *Grape Downy Mildew*, and *Melon Powdery Mildew*. (I) (II).

The present application relates to a kind of fungicidal compositions containing famoxadone and carvacol, and the effective component is the binary complex of famoxadone and carvacol.The mass ratio of famoxadone and carvacol is 1-20:30-5, and the mass fraction ratio of effective component famoxadone and carvacol in preparation is 6%-50%.The dosage form of the fungicidal composition described in the present application is emulsifiable concentrate, suspension concentrate, water emulsion, microemulsion and water dispersible granule.The fungicidal composition is suitable for preventing and treating various powdery mildew, rust, leaf blight, net blotch, downy mildew, early and late blight of fruit trees, vegetables, ornamental plants, crops, etc., and has good protective and curative effects on early and late blight of tomato, etc.

The application discloses a double-main-stem double-layer leaf curtain grape trellis and a construction and updating method thereof. The trellis body is provided with four-layer H-shaped cross beams at the head and tail columns of the planting zone, two groups of traction iron wires are arranged on the four-layer cross beams, and two high and low main stem iron wires are additionally arranged. Single grape is cultivated into high and low layered first and second main stems and is bound to the corresponding main stem iron wires, the main stem fruiting branches are bound to the upper and lower layer differential spacing iron wires to form a double-layer open V-shaped leaf curtain with a certain angle, and the branches and leaves of the upper and lower layers are differentially controlled to flexibly adjust the leaves according to the variety growth, dry and wet climate and optimize the ventilation and light transmission. The double-main-stem is alternately updated and pruned every year, only the base of a single main stem is updated every year, and the other branches normally bear fruits. The light distribution of the trellis is excellent, the leaf curtain is transparent, the downy mildew and white rot diseases can be reduced, the trellis surface is regular, manual management and mechanical operation are facilitated, the tree body is rejuvenated, and stable and high yield of grapes can be realized year after year.

This invention discloses genes PlSWL1 And its application in the prevention and control of downy mildew in litchi. This invention constructs... PlSWL1 The gene was knocked out via vector and transformed into a protoplast using PEG-mediated homologous recombination. PlSWL1 Knockout mutants and replacement transformants were obtained from *Phytophthora licoricei* through knockout and replacement. Compared with the wild type, the mutants showed a significantly reduced germination rate of dormant spores and a markedly weakened pathogenicity of zoospores and hyphae. This invention confirms... PlSWL1 It is essential for the growth, development, infection, and pathogenicity of Phytophthora lichei, and helps to elucidate the pathogenic molecular mechanism of Phytophthora lichei, providing a target gene for the development of effective fungicides.