89 results about "Propoxur" patented technology

The invention discloses herbicide effervescent tablets containing halosulfuronmethyl and pretilachlor and a preparation method thereof. The active ingredients of the herbicide effervescent tablets comprise 0.5 to 5 weight percent of halosulfuronmethyl, 10 to 25 percent of pretilachlor and the balance of an assistant. The effervescent tablets can be prepared by a direct dry-process tabletting method or a method of wet-process granulating first and then tabletting; the direct dry-process tabletting method comprises mechanically grinding the assistant, uniformly mixing with the assistant and directly tabletting the two raw material medicines; and the method of wet-process granulating first and then tabletting comprises drying the two raw material medicines and the ground assistant, mixing, adhering, granulating to prepare an acid soft material and an alkaline soft material and tabletting. The prepared effervescent tablets are new herbicide preparation products which are environment-friendly and convenient to use. The herbicide effervescent tablets can effectively prevent and control various weeds such as weed from broad leave family, grass family, cyperaceae family and the like in rice shooting fields and transplanting fields.

The invention relates to a pharmaceutical granular formulation containing weedicide and fertilizer for agricultural production. By total weight of the pharmaceutical granular formulation, the compositions and the contents of raw materials are: 0.01 to 10 percent of bensulfuron-methyl, 0.2 to 30 percent of pretilachlor or quinclorac, and 5 to 45 percent of macro-element N, 1 to 10 percent of macro-element P and 1 to 15 percent of macro-element K in the fertilizer, and 0.1 to 5 percent of microelement zinc and 0.1 to 5 percent of microelement boron in the fertilizer, and 0.1 to 5 percent of slow release formulation, 0.05 to 5 percent of safener, 0.5 to 5 percent of dispersing auxiliary, and the balance being stuffing. The pharmaceutical granular formulation effectively guarantees scientific release of farm chemical and the fertilizer, and has double effects of weed removal and fertilizer application.

The invention discloses a comprehensive herbicide for rice paddy fields. Effective constituents are fenpyroxim and pretilachlor or mefenacet, the weight percentage of the fenpyroxim to the pretilachlor or the mefenacet is between 1 to 1 and 1 to 20, and the preferred weigh ratio is between 1 to 2 and 1 to 10. A herbicide composition can effectively prevent and kill grassy weeds in the rice paddy fields such as barnyard grasses, semen euphorbiae lathyridis and so on at one time, and can also control broad leaved weeds such as rotala indica, Eleocharis acicularis and so on.

The invention discloses a herbicide composition containing pyraclonil and pretilachlor. The herbicide composition comprises pesticide adjuvants, pyraclonil and pretilachlor, wherein the ratio of parts by weight of pyraclonil to pretilachlor is (1 to 1)-(1 to 70); the total weight of pyraclonil and pretilachlor is 0.1-85% of the weight of the herbicide composition. The herbicide composition is applicable to controlling annual weeds in paddy fields, has obvious synergistic or additive control effects compared with a single agent, reduces the dosages of pesticides, reduces the pesticide costs, prolongs the service lives of the pesticides and reduces the adverse effects of the pesticides on the ecological environment.

A durable insecticide contains natural plant extract and pyrethrin compound containing cypermethrin, permethrin, propoxur, and the extracts of oleander, castor leaf, etc. Its advantages are high durability (6 months), broad spectrum (mosquito, fly, ant, etc), high effect, and low resistance of pests.

The invention relates to a weeding composition containing pretilachlor, pyriminobac-methyl and metazosulfuron. The weeding composition comprises the following effective components: pretilachlor, pyriminobac-methyl and metazosulfuron at the ratio of (1-50) to (1-10) to (1-15) in parts by weight. The weeding composition disclosed by the invention has synergetic effects, and can be applied to preventing and removing annual weeds of paddy fields; the effect is obviously superior to that of independent use or binary mixed use of single pesticide; the herbicide controlling spectrum is expanded; meanwhile, the amount of the pesticide is reduced; the environmental pollution is relieved; and the weed resistance is delayed.

The invention discloses a weeding composite comprising oxaziclomefone and application of the weeding composite. The composite comprises a first active ingredient, namely the oxaziclomefone, a second active ingredient, namely pretilachlor or butachlor, and assistants. The weight ratio of the first active ingredient to the second active ingredient is (0.1-100): (10-150). The composite can be prepared into suspoemulsion, micro-capsule suspending agent, aqueous suspension agent, dispersible oil suspending agent, missible oil, microemulsion, emulsion in water, wettable powder, water dispersible granules and granules which are allowable agriculturally. The weeding composite is reasonable in composition, good in weeding effect and low in dosage cost, and activity and weeding effect of the composite are not simple superposition of component activity. Compared with existing single preparations, the weeding composite has the advantages of remarkable weeding effect and synergistic effect, high safety and conformity with safety requirements of pesticide preparations. The weeding composite is used for early-stage weeding of transplant fields and direct seedling fields and has high activity for weeds of paddy fields.

The invention discloses a weeding composition and granules thereof. The weeding composition consists of pretilachlor and pyrazosulfuron-ethyl, wherein the mass ratio of the pretilachlor to the pyrazosulfuron-ethyl is (1-5): (0.1-0.2), preferably 2: (0.1-0.2). The granules take the weeding composition as an active ingredient, and comprise the following components in percentage by mass: 1 to 5 percent of pretilachlor, 0.1 to 0.2 percent of pyrazosulfuron-ethyl, 5 to 10 percent of dispersant, 2 to 10 percent of wetting agent, 0 to 10 percent of disintegrating agent, 0 to 3 percent of adhesive, 0 to 5 percent of adsorbent, and the balance of filler. The compound granules containing the pretilachlor and the pyrazosulfuron-ethyl can be applied at one time, the weeding spectrum is expanded, the application uniformity is improved, the effect is improved, the lasting period is prolonged, the consumption and the using cost are reduced, and environmental pollution caused by application is reduced at the same time.

The invention discloses a comprehensive weeding composition of a paddy field. The weeding composition contains active ingredients such as penoxsulam, pyrazosulfuron-ethyl and pretilachlor, wherein the mass ratio of penoxsulam to pyrazosulfuron-ethyl to pretilachlor is (1.2-3): (0.5-2): (20-35). The comprehensive weeding composition can be used for the pre-emergence treatment, and also can be used for the post-emergence treatment; moreover, a good effect for removing and controlling the gramineae weeds, broadleaf weeds and cyperaceae weeds is good. The weeding composition is safe to the paddy rice, wide in herbicide controlling spectrum, small in consumption amount and low in production cost.

The present invention discloses a compound weed-killing preparation using pretilachlor and isoproturon as effective component. It is a wettable powder preparation, in which the pretilachlor content is 10%-60% and the isoproturon content is 10%-60%. Said compound weed-killing preparation also contains other adjuvant and filling material.

The invention relates to a weeding composition containing penoxsulam, halosulfuron methyl and pretilachlor. The weeding composition comprises the following effective components in percentage by weight: 0.01%-20% of the penoxsulam, 0.01%-20% of the halosulfuron methyl, 0.1%-50% of the pretilachlor, and the balance of a pesticide adjuvant. The weeding composition disclosed by the invention is suitable for preventing and removing annual weeds in rice transplanting fields. The weeding composition disclosed by the invention can improve the weeding effect, extends a weeding spectrum, is low in toxicity and residues, and obviously reduces medication quantity, the number of times of medication and use cost; the effect of the composition is obviously higher than that of each single dosage, so that the weeding composition is a good novel composition medicament for preventing and removing the annual weeds in the rice transplanting fields at present.

The invention discloses a method for synthesizing herbicide pretilachlor by a one-pot method, which comprises the following steps of: reacting 2,6-diethylaminobenzene with strong base in a nonprotonic solvent to generate amino sodium salt; then reacting the amino sodium salt with chloroethyl propyl ether to generate pretilachlor intermediate 2,6-diethyl-N-(2-propoxyethyl) phenylamine; and leadingthe intermediate 2,6-diethyl-N-(2-propoxyethyl)phenylamine not subjected to separation and chloroacetic chloride to carry out acylation reaction in the same reactor to obtain pretilachlor. The invention has the advantages of high reaction selectivity, high yield, short process flow, high utilization ratio of raw materials, reduced production cost and higher productive and practical value.

The invention discloses a paddy field herbicide synergistic composition. The composition is characterized by containing pretilachlor and oxadiazon serving as weeding active substances, wherein the weight ratio of the pretilachlor to the oxadiazon is (5-6%):(0.5-30%). The composition can be developed into a relatively novel film expanding oil agent formulation and a general formulation of a paddy field herbicide. The composition of the pretilachlor and the oxadiazon can enlarge the weeding spectrum and effectively prevent and control annular gramineous and broad-leaf weed such as cockspur grass, moleplant seed, paspalum, cyperus difformis, cone alkali grass, eleusine indica, eleocharis parvula, narrow-leaf alisma rhizome, ammannia baccifera, special-shaped grass, cyperus iria, ludwigia prostrata, monochoria vaginalis and the like. The composition is safe to rice, has wide weeding spectrum, good diffusion property and long effect duration and is convenient to use.

The invention discloses a weeding composition containing penoxsulam, mesotrione and pretilachlor and an application therefor. The weeding composition comprises a first active ingredient penoxsulam, a second active ingredient mesotrione and a third active ingredient pretilachlor in a weight ratio of (0.1-90): (0.1-90): (0.5-90), preferably (0.2-50): (0.2-50): (2-50). The composition can be prepared into agriculturally permissible suspensions, dispersible oil suspensions, suspoemulsions, emulsion oil, microemulsions, wettable powder, water dispersible granules, granules, tablets and effervescent tablets. The weeding composition disclosed by the invention is reasonable in composition, good in weeding effect and low in medicinal cost. The activity and weeding effect are not simple superposition of activity of the ingredients. Compared to an existing single preparation, besides the remarkable weeding effect, the weeding composition further has a remarkable synergistic effect, delays the resistance, is good in safety, and meets the safety requirements on pesticide preparations. The weeding composition disclosed by the invention has a good preventing and treating effect on northeastern transplanted paddy field weeds: barnyard grass, lecrsia oryzoides, scirpus tabernaemontani, sagittaria trifolia, rhizoma alismatis and the like.

The invention discloses a micro-capsule suspending agent of pretilachlor and a preparation method of the micro-capsule suspending agent. The preparation method includes the steps that a first material and a buffer solution are mixed to be uniform so that the pH value can be regulated to 4 to 7, and a second material is obtained; the second material and an acid pH value regulator are mixed to be uniform so that the pH value can be regulated to 3 to 4, and a third material is obtained; solidification and condensation polymerization are conducted on the third material, and the pH value is regulated; and a solidification and condensation polymerization product subjected to pH regulation and a dispersing agent are mixed to be uniform, and a fourth material is obtained. The micro-capsule suspending agent, obtained according to the disclosed preparation method, of the pretilachlor is stable to store, the agglomeration and solidification phenomena are not likely to be generated, the lasting period is long, and weed in rice fields can be effectively prevented and treated.

The invention relates to a herbicidal composition containing propyrisulfuron, pretilachlor and penoxsulam, which comprises the active ingredients of propyrisulfuron, pretilachlor and penoxsulam. The herbicidal composition provided by the invention has synergy against weeds in a paddy field, can expand a single dose weed control spectrum and reduce the risk of weed resistance, and is suitable for controlling the annual weeds in the paddy rice.

The invention discloses a weeding composition containing pretilachlor and clomazone for lotus root field. The composition comprises two active ingredients and the balance of pesticide adjuvants and carriers, wherein the two active ingredients are pretilachlor and clomazone respectively; the ratio of pretilachlor to clomazone is (1-50): 1; the weight of the two active ingredients accounts for 10%-50% of the total weight of the composition. The composition is prepared into emulsified oil, emulsifiable powder or fine granules.

The invention discloses weeding composition containing pentoxazone and application thereof. The weeding composition comprises pentoxazone as a first active ingredient, pretilachlor or butachlor as a second active ingredient and auxiliary. The weight ratio of the first active ingredient to the second active ingredient is (0.1-100):(10-150). The composition can be used for preparing suspoemulsion, micro-capsule suspending agent, aqueous suspension, dispersible oil suspending agent, emulsifiable oil, microemulsion, water emulsion, wettable powder, water dispersible granules and granules allowed for agriculture. The composition has reasonable in components and is good in weeding effect and low in usage cost, and the activity and the weeding effect do not come from simple superposition of activities of various components. Compared with existing single preparations, the composition has remarkable synergism effect, and is safe and accordant with safety requirements of pesticide preparation besides remarkable weeding effect. The composition is used for weeding of rice transplanted rice fields, direct seeding fields and the like at early stage and has high biological activity for weeds in the rice fields.

The invention discloses a pretilachlor microcapsule suspension and a preparation method thereof. The pretilachlor microcapsule suspension comprises following components in percentage by weight: 10 to30% of pretilachlor, 2 to 6% of capsule wall material, 1.5 to 5% of emulsifier, 1 to 5% of dispersant, 2.5 to 8% of solvent, 0 to 0.3% of thickening agent, and the balance being water. Pretilachlor isthe effective component, isocyanate and matched dispersant and emulsifier are taken as the auxiliary materials; and the prepared high quality pretilachlor microcapsule suspension has the advantages of high encapsulation rate, high dispersibility, and high suspension rate, has a long-lasting and stable effect on killing weeds in rice fields such as barnyard grass, is safe for the paddy rice, can effectively protect crops, and kills multiple weeds in fields such as barnyard grass.

The invention discloses a herbicide as an agricultural chemical, and in particular relates to a pretilachlor-containing aqueous emulsion. The pretilachlor-containing aqueous emulsion for weed control comprises the following components by weight: 5 to 60 percent of pretilachlor, 2 to 10 percent of solubilizer, 2 to 15 percent of surfactant, 4 to 8 percent of antifreeze, 0.5 to 2 percent of thickener, and the balance of water. The pretilachlor-containing aqueous emulsion uses water as a solvent. Under a condition of a weed control effect equal to or better than other formulations, the pretilachlor-containing aqueous emulsion has the advantages of considerable resource conservation, great reduction in environmental pollution, safe production and storage, convenient use, and the like.

The invention discloses a herbicidal composition containing benzobicyclon, pyrazosulfuron-ethyl and pretilachlor, relating to the technical field of pesticide compounding. The herbicidal composition is prepared from the following effective components: the benzobicyclon, the pyrazosulfuron-ethyl and the pretilachlor, wherein the weight ratio of the benzobicyclon to the pyrazosulfuron-ethyl to the pretilachlor in the herbicidal composition is (1 to 30) to 1 to (1 to 30); the total weight percentage of the benzobicyclon, the pyrazosulfuron-ethyl and the pretilachlor in the composition is 1 to 80 percent. According to the herbicidal composition disclosed by the invention, a herbicide controlling spectrum can be significantly widened and the overall control effect on weeds in a paddy field is improved; meanwhile, the composition has good safety for rice, and is an excellent novel medicinal combination for controlling annual weeds in the paddy field.

The invention relates to a composition for preventing and removing weeds in a rice field, which is characterized by containing three active ingredients: 1 to 30 percent of pretilachlor, 1 to 20 percent of oxadiazon and 1 to 20 percent of oxyfluorfen. The weeding composition can be processed into wettable powder, cream, microemulsion and a suspending agent. The composition is used for preventing and removing main weeds in the rice field, is safe to the paddy rice, has a wide control spectrum of weeds, and can control the harm of the weeds during a whole vegetation period of the paddy rice after being applied at one time.

The invention relates to a biochemical synergistic weed killer composition. The biochemical synergistic weed killer composition comprises effective constituents, auxiliaries and fillers. The effective constituents include sclerotium rolfsii and pretilachlor. The biochemical synergistic weed killer composition has the advantages that the two effective constituents, namely, the sclerotium rolfsii and the pretilachlor, are used with each other, accordingly, the biological weed killing performance of the sclerotium rolfsii which is a novel biological weed killer can be brought into play, fast-acting properties of the pretilachlor which is a chemical weed killer can be embodied, and weed killing effects can be improved; the most obvious synergistic effects can be realized by the sclerotium rolfsii and pretilachlor composition for preventing and killing diversified broad-leaf weeds and nutgrass flatsedge of dry and direct-seeded paddy rice; the service cost of the biochemical synergistic weed killer composition can be reduced, problems of high single-dosage service costs and poor low-dosage individual service effects of the sclerotium rolfsii and the pretilachlor at present can be solved, accordingly, prevention effects can be improved when the sclerotium rolfsii and the pretilachlor are used with each other, and the agricultural cost can be reduced.

The invention provides a microcapsule suspension concentrate combined by pyrazosulfuron with pretilachlor and a preparation method thereof. The microcapsule suspension concentrate provided by the invention takes the pyrazosulfuron and the pretilachlor in a weight ratio of 1:50-1:1 as effective components, takes urea resin as a capsule forming material and has no aggregation; the dosage form is stable and uniform; the closed weeding time is longer than that of the conventional dosage form by more than two time and reaches about 75 days; and in addition, the microcapsule suspension concentrate has the characteristics of thoroughness for weeding, less consumption, environment protection of the used solvent, and the like and can be used for preventing and removing gramineae, broad-leaved and cyperaceae weeds.

A method for checking for sensitivity of acetylcholine esterase in insects using a single insect, which comprises the steps, in any order, of homogenizing a single insect in aqueous neutral to acid pH phosphate buffer, producing a solution of acetylcholine iodide in neutral to acid pH phosphate buffered water-miscible organic solvent, producing a solution of 5,5-dithio-bis-(2-nitrobenzoic acid) in the buffer, and producing a solution of propoxur in the buffer, dropping the insect homogenisate into the wells of an assay plate, dropping the acetylcholine iodide and 5,5-dithio-bis-(2-nitrobenzoic acid) solutions into some of the wells and 5,5-dithio-bis-(2-nitrobenzoic acid) propoxur solutions into the other wells and checking for a difference in the yellow coloration between the samples in the two sets of cells. The invention also provides a test kit for determining susceptibility of acetylcholine esterase in insects using a single insect comprising a container containing separate containers of: I. a neutral to acid pH phosphate buffer II. acetylcholine iodide III. 5,5-dithio-bis-(2-nitrobenzoic acid) IV. propoxur and V. a water-miscible organic solvent.

The invention discloses a pretilachlor synthesis method. The pretilachlor synthesis method comprises steps as follows: sodium propanolate is dissolved in an organic solvent I, 2-chloroacetaldehyde dimethyl acetal is added dropwise, and heat is preserved until the reaction is performed completely; propoxy acetaldehyde dimethyl acetal and tetrahydrofuran are mixed, aqueous acid is added, and heat is preserved until the reaction is performed completely; 3-propoxy propionaldehyde, 2,6-diethyl aniline and an organic solvent II are mixed, a catalyst is added, hydrogen is introduced until certain pressure is obtained, and heat is preserved until the reaction is performed completely; amidogen ether, a sodium hydroxide solution and methylbenzene are mixed, chloroacetyl chloride is added dropwise at certain temperature, heat is preserved until the reaction is performed completely, and pretilachlor is prepared. With the adoption of the method, high-quality pretilachlor can be obtained.

The invention relates to a paddy field weeding composition. The composition is prepared from weeding active ingredients including bispyribac-sodium, bensulfuron methyl and pretilachlor, and further comprises a pesticide auxiliary agent, wherein the weight ratio of the weeding active ingredients, namely the ratio of the bispyribac-sodium to the bensulfuron methyl to the pretilachlor is (1 to 20) to (1 to 20) to (10 to 100). The composition provided by the invention is used for removing annual weeds of a paddy field and the weeding effect is obviously improved; a weeding spectrum is expanded; meanwhile, the use amount of pesticide is reduced and the pollution to the environment is alleviated; the drug resistance of weeds is delayed.

The invention discloses a kit for detecting G119S mutation of culex acetylcholinesterase. The kit provided in the invention comprises a protein extracting solution, a developer, an inhibitor I, an inhibitor II and acetylthiocholine iodide. Specifically, the protein extracting solution is composed of a PB buffer solution and Triton X100 with a concentration of 1%; the developer is composed of a PB buffer solution, DTNB (5, 5'-Dithio-bis-2-nitrobenzoic acid) with a concentration of 0.2nM and NaHCO3 with a concentration of 0.35mM; the inhibitor I is composed of propoxur with a concentration of 10<-3>M and ethanol; the inhibitor II is composed of propoxur with a concentration of 10<-1>M and ethanol; a G119S mutant acetylcholinesterase coded gene is as shown in sequence 4 of a sequence table. The kit provided in the invention is simple to operate, and whether a mosquito has acetylcholinesterase G119 S mutation can be known only through visual inspection and color contrast. Being rapid and efficient, the kit of the invention can be used in fields and daily life, and provides guidance for people in terms of pesticide control to mosquitoes.

The invention relates to a method for synthesizing a pesticide, in particular to a method for synthesizing propoxur. The invention provides the method for synthesizing the propoxur, which is simple and has low pollution and high yield. The method comprises the following steps of: adding o-isopropoxy phenol and catalyst in a ratio of 1:0.001-0.05 into a glass reactor; stirring and cooling, and slowly dripping methylisocyanate (MIC), wherein the ratio of the phenol to the MIC is 1:1-1:1.2; and after the dripping is completed, reacting for 0.5 to 3 hours at the temperature of between 60 and 110 DEG C.

The invention relates to a weeding composition, and a preparation method and application thereof. The weeding composition is capable of reducing the use amount of single-item weedicide and delaying target weed resistance and is wide in phytocidal range. The weeding composition is composed of pretilachlor, oxadiazon and an additive. The preparation method comprises the following steps of: 1, weighing the pretilachlor and the oxadiazon according to the weight ratio of (20-70):(15-50), then putting the pretilachlor and the oxadiazon into a high-shear emulsifying kettle, and putting the additive into the high-shear emulsifying kettle to shear so as to obtain a mixture; and 2, grinding the mixture through a sand mill, and pumping the mixture into a finished product storage tank, so that preparation of the weeding composition is completed. The weeding composition is used for preventing and weeding annular gramineous weeds, broad leaf weeds and Cyperaceae weeds in rice transplanting fields. The weeding composition disclosed by the invention is capable of reducing the use amount of the single-item weedicide and delaying the target weed resistance, is wide in phytocidal range and safe to crops and environment, and is used in the field of chemical weeding.