13 results about "Fluridone" patented technology

The invention belongs to the field of pesticides, and particularly relates to a ternary weeding composition and application thereof. The ternary weeding composition comprises an active component A, an active component B and an active component C with effective weeding amounts, and the active component A is dichloro clomazone or dichloro clomazone; the active ingredient B is isoxaflutole, toprazole fluridone or mesotrione; the active ingredient C is metribuzin. The composition can be used for effectively preventing and removing various weeds such as gramineous weeds and broadleaf weeds, and has the characteristics of expanding the herbicide controlling spectrum, reducing the application amount, generating a synergistic effect, solving resistant weeds and the like.

The invention belongs to the technical field of biochemical engineering and genes, and discloses a preparation method and application of a high-yield mutant strain for improving the yield of carotene in schizochytrium limacinum, and the preparation method comprises the following steps: carrying out ARTP mutagenesis on a bacterial suspension in a logarithmic phase of schizochytrium limacinum HX-308 for 60 seconds, and washing the mutated thalli with 1M sorbitol to obtain an ARTP mutagenesis bacterial suspension; the method comprises the following steps: diluting a bacterial suspension by 100 times with a 1M sorbitol solution, coating the diluted bacterial suspension on a primary screening flat plate containing 25 [mu] M of fluridone, selecting a single colony with the diameter of more than or equal to 0.2 cm for fermentation culture, breeding a schizochytrium limacinum carotene accumulation dominant strain, and determining that the carotene yield of a schizochytrium limacinum mutant strain is more than 1.5 times higher than that of wild type schizochytrium limacinum HX-308. The mutant strain is a high-yield mutant strain for the carotene yield of the schizochytrium limacinum. According to the method, fluridone is used as a screening agent, the specificity is good, high-yield mutant strains can be rapidly and preliminarily screened, and the method is simple and efficient.

The invention relates to a method for promoting centella asiatica seed germination, and belongs to the technical field of medicinal plant cultivation. Aiming at the technical problems of low germination rate and long period of centella asiatica seeds caused by seed coat obstacles and endogenous inhibitors, the method comprises the following steps: firstly, sequentially carrying out mechanical coat breaking, ultrasonic treatment and high-pressure permeation treatment on the seeds to break a physical barrier; mixing the seeds with a wet substrate, carrying out warm lamination at 18-25 DEG C for 25-35 days, then carrying out cold lamination at 2-6 DEG C for 50-70 days, and spraying a KNO3 solution in the cold lamination stage to activate physiological metabolism; after lamination, washing with running water, sequentially soaking with a thiourea solution, carrying out H2O2 treatment for chemical degradation, and carrying out biological adsorption by adopting an adsorbent containing bacillus subtilis and activated carbon; soaking the seeds into a mixed solution containing brassinolide, kinetin and fluridone, and carrying out gradient heating and drying; and finally carrying out germination culture. The method can significantly improve the germination efficiency and uniformity, and is suitable for centella asiatica large-scale seedling raising and medicinal resource development.

The invention discloses a method for increasing the germination rate of leymus chinensis seeds by using a plant growth regulator fluridone, and belongs to the technical field of leymus chinensis cultivation. The method provided by the invention comprises the step of treating ears of leymus chinensis plants by using a fluridone solution. According to the method, the fluridone solution is applied in the ear development process and directly acts on the seed development process, so that the fluridone can be more effectively absorbed and utilized by the seeds, and the germination rate is promoted to be increased; the fluridone enters the seeds through a natural physiological process, can be uniformly distributed at ears, and can improve the physiological status of the seeds in a seed formation stage, so that the subsequent germination rate is increased; extra treatment after harvesting is not needed, and time and labor are saved. Compared with a method for directly treating the seeds by using an agent after the seeds are harvested, the method has the advantages of more efficient absorption, uniform distribution, improvement of the seed quality in advance, simplification of subsequent steps and the like, and the physiological status and germination potential of the seeds can be more effectively improved.

The present invention belongs to the field of pesticides, and specifically relates to a herbicidal composition and the use thereof. The composition comprises a herbicidally effective amount of an active ingredient A and an active ingredient B, wherein the active ingredient A is; and the active ingredient B is selected from one or more of the following compounds or acids / esters / salts thereof: diflufenican, picolinafen, fluridone, fenpyrazone, saflufenacil, flumioxazin, sulfentrazone or. The composition can effectively control problems of gramineous weeds, cyperaceous weeds, broadleaf weeds, etc., and exhibits characteristics of an expanded herbicidal spectrum, a reduced application dosage, the ability to produce a synergistic effect, effectiveness in controlling resistant weeds, etc.

The invention belongs to the field of pesticides, and particularly relates to a weeding composition and application thereof. The composition comprises an active component A and an active component B with effective weeding amounts, the active ingredient A is an active ingredient B, and the active ingredient B is selected from one or more of diflufenican, diflufenican, fluridone, toprazole fluridone, saflufenacil, flumioxazin and sulfentrazone. The composition can be used for effectively preventing and removing the problems of gramineous weeds, cyperaceae weeds, broadleaf weeds and the like; the herbicide composition has the characteristics of expanding the herbicide controlling spectrum, reducing the application amount, generating a synergistic effect, solving resistant weeds and the like.

The present invention relates to a herbicidal composition comprising (A) a herbicidally effective amount of a compound of formula (I), wherein G is selected from the group consisting of hydrogen, -C(O)CH3, and -C(O)OCH3; and (B) at least one herbicide selected from the group consisting of isoxaben (B1) (or benoxaprine (B1a)), quinoclamine (B2), bromoxynil (B3), butachlor (B4), isoxaflotole (B5), cyprosulfuron (B6), fluridone (B7) (or flumiclorac (B7a)), fluridyl (B8), pyroxasulfone (B9), methyl 2-[2-[2-bromo-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)pyrimidin-1-yl]phenoxy]phenoxy]-2-methoxy-acetate (B10), 6-chloro-4-(2,7-dimethyl-1-naphthyl)-5-hydroxy-2-methyl-pyridazin-3-one (B11), methyl 3-[2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-pyrimidinyl]-4-fluorophenyl]-3a,4,5,6-tetrahydro-6-methyl-6aH-cyclopenta[d]isoxazole-6a-carboxylate (B12), 2-[1-[[2-(4-chlorophenoxy)propoxy]imino]butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one (B13), 2-[(2-bromo-6-fluoro-phenyl)methoxy]-4-isopropyl-1-methyl-7-oxabicyclo[2.2.1]heptane (B14), and diflufenican (B15), or an agriculturally acceptable ester or salt thereof.

The invention discloses a method for establishing a fenugreek efficient regeneration system, and belongs to the technical field of medicinal plant tissue culture. The establishment method comprises the following steps: (1) inoculating a fenugreek explant into a primary induction culture medium containing 5-azacytidine, spermidine and fluridone, and carrying out induction culture to generate an adventitious bud; (2) dividing the adventitious buds, and then transferring the adventitious buds into a proliferation culture medium containing trehalose, paclobutrazol and uridine for culture to realize amplification of the adventitious buds; and (3) transferring the stem segments obtained by multiplication culture into a rooting culture medium containing sodium nitroprusside and jasmonic acid methyl ester for culture, and inducing rooting. According to the established efficient sterile rapid propagation system for fenugreek, the adventitious bud differentiation rate reaches 91.3%, the propagation coefficient is 10.8, the rooting rate reaches 97.5%, the propagation speed is high, high-quality seedlings can be produced on a large scale, and meanwhile the yield and quality are improved.

The invention discloses a switchgrass sowing propagation method, and belongs to the technical field of switchgrass propagation, a composite embedding agent is prepared to embed switchgrass seeds, then low-temperature sand storage stratification treatment is carried out, fluridone is dynamically released through the composite embedding agent, low-temperature treatment is combined to promote switchgrass seed dormancy breaking, and the switchgrass seed dormancy breaking rate is increased. The composite embedding agent can continuously provide an appropriate humidity environment for the seeds after the stratification treatment is completed, so that the secondary dormancy of the seeds is inhibited, the germination rate of the seeds is improved, the sowing and propagation efficiency of switchgrass is improved, and the method has a good application prospect in the field of switchgrass propagation.

The invention discloses an epimedium sagittatum seed embryo after-ripening method. The method comprises the following steps: disinfecting, washing and drying herba epimedii seeds; spraying fluridone onto the river sand, and treating for 24 hours; then putting the river sand into a roller, then putting the epimedium seeds into the roller, and carrying out rolling priming treatment for 24 hours; then gibberellin is used for treatment; the humidity state of the seeds in the roller is observed, and if the seeds are dry, the seeds and the river sand are poured out and treated with gibberellin with the same concentration; the seeds are longitudinally cut at regular intervals, the embryo completion condition is observed until white buds appear, namely endosperm grows out of germs, and embryo after-ripening is completed. According to the method, on the basis of a roller initiation technology, solid media, hormones and medicament treatment are combined, so that epimedium seed embryos are subjected to initiation dynamic treatment continuously in the embryo after-ripening process. According to the method, seed rotting can be overcome, the integrity of cell membranes of the seeds is guaranteed, and the albino seedling phenomenon caused by damage of the cell membranes is avoided. The seed utilization efficiency and the time efficiency are improved, and a foundation is laid for improving the seedling raising efficiency of the herba epimedii.

The invention provides a compound weeding composition containing flumioxazin and mesotrione, and relates to the technical field of pesticides, the compound weeding composition provided by the invention combines metolachlor or butachlor, mesotrione and flumioxazin, and the inventor finds that through a large number of tests, the compound weeding composition has the advantages that the compound weeding composition has the effect of preventing and treating flumioxazin and mesotrione; the herbicides with different action mechanisms and herbicide controlling spectrums have a synergistic effect after combined action, the herbicide controlling spectrum is expanded, the residual period of the three herbicides is short, next-stubble crops are not affected, and crop rotation is facilitated. Under different proportions, the weeding composition can be used in sorghum fields, corn fields and the like, new pesticides and selection ways are added for weed prevention and control, the pesticide application amount is reduced, and sustainable development of agriculture is promoted.

This invention provides a rapid quantitative detection method for the pesticide flufenoxam, employing high-performance liquid chromatography (HPLC) for detection. The method includes the following steps: Step S1: Sample preparation; Step S2: Standard preparation; S3: Linearity test; Step S4: Sample detection; Qualitative analysis by retention time and quantitative analysis by external standard method. The chromatographic conditions are as follows: mobile phase: CH3CN:H2O = 60:40 (volume ratio); column: C18 column; column temperature: 30℃; flow rate: 1.0 mL / min; detection wavelength: 254 nm. This invention develops a rapid quantitative detection method for the pesticide flufenoxam, applicable to the quantitative detection of flufenoxam and other formulations. The method is simple, provides good separation, is accurate, and has good reproducibility. Flufenoxam concentration and peak area show a good linear relationship in the concentration range of 103.24 mg / L to 206.19 mg / L, and exhibit strong specificity.