59 results about "Mancozeb" patented technology

The invention relates to the technical field of pesticide preparations, and provides mancozeb water dispersible granules and a preparation method thereof. The invention discloses a mancozeb water dispersible granule. Comprising the following raw materials in parts by weight: 65-75 parts of mancozeb, 10-12 parts of silane coupling agent modified attapulgite, 15-19 parts of nano porous diatomite, 2-4 parts of zinc oxide-loaded nano montmorillonite, 5-8 parts of a dispersant, 3-5 parts of a wetting agent, 4-6 parts of a disintegrating agent, 2-4 parts of a binder, 1-2 parts of a stabilizer, 0.2-0.4 part of polydimethylsiloxane, 0.4-0.6 part of nano silicon dioxide and 120-140 parts of water. The disintegration property and dispersity of mancozeb in water can be improved, and it is ensured that liquid medicine can form stable suspension liquid; the rain wash resistance of the mancozeb water dispersible granule is further improved.

This invention relates to the field of pesticide technology, particularly to the field of IPC A01N, and more specifically, to a dry suspension concentrate of metalaxyl-mancozeb and its preparation method. By weight percentage, the raw materials are: 10-72% mancozeb technical grade, 1-10% metalaxyl technical grade, 7-35% surfactant, 5-20% disintegrant, 0.1-2% defoamer, and filler to 100%. The metalaxyl-mancozeb dry suspension concentrate of this invention employs multi-stage grinding to control the particle size of the suspension concentrate to below 5μm, the suspension rate to ≥90%, and the moisture content to below 2.0%. It features strong atomization and dispersibility, rapid wetting, high suspension rate, strong penetration, and non-degradation at room temperature. In use, it reduces pesticide usage while improving control efficacy.

The invention discloses a method for rapidly detecting pesticide residues in blueberries, and relates to the technical field of blueberry pesticide detection.The method comprises the steps that 10 g of a fully-ground blueberry sample is placed in a 100 ml centrifuge tube with a plug, 10 ml of a 0.1 mol / L hydrochloric acid aqueous solution and 10 ml of dichloromethane are added, 100 microliters of a mixed internal standard solution is added, after vortex oscillation is conducted for about 30 min, centrifugation is conducted for 5 min at the speed of 5000 r / min, 2 ml of a lower layer organic phase is taken, and the concentration of the lower layer organic phase is 10 ml; and after blow-drying by a nitrogen blowing instrument, adding 2ml of methanol for redissolving, and then adding an LCMS instrument for detection. The detection method disclosed by the invention can be used for simultaneously detecting 11 types of blueberry bactericides in national food standards and three types of bactericides such as mancozeb, metalaxyl and procymidone which are widely used in blueberry production at present. The result of the analysis method shows that the linearity of most components is good in the range of 5-100 g / L, the recovery rate of 14 pesticides is 94.9%-101.3% in the range of 5-50 [mu] g / kg, and the detection limit and the quantification limit of the method are 0.001 [mu] g / g-0. 03 [mu] g / g and 0.005 [mu] g / g-0. 010 [mu] g / g respectively. The method is simple, convenient and rapid to operate, and the sensitivity, accuracy and precision can meet the technical requirements of detection of various pesticide residues.

The invention relates to the field of industrial wastewater treatment, in particular to an oxidation flocculation treatment system for sulfur-containing wastewater in mancozeb production. The system comprises a parameter acquisition module, a loss evaluation module, a boundary prediction module, a strategy selection module and a dynamic execution module. The system performs feature extraction in combination with the multi-dimensional state parameters of the fluid, and quantifies the buffer capacity loss degree of the sulfur-containing wastewater by using a mapping model; the method is characterized in that the speed of approaching a system failure boundary is predicted based on loss degree change, a fluid regulation and control strategy is generated in combination with a dangerous threshold value, and an oxidizing agent and / or a flocculating agent are / is dynamically controlled to be added for fluid state reconstruction; according to the method, the traditional passive dosing depending on a single instantaneous index is abandoned, a control object is expanded to hidden system buffer toughness, colloidal sulfur enrichment is recognized in advance and other potential risks, the hysteresis defect of a conventional sensor is overcome, prospective early warning is realized, and sludge floating and harmful gas dissipation are effectively avoided.

The invention relates to the field of potato planting, in particular to a preparation method of a safe seed dressing agent for seed potatoes and a seed dressing method.The potato seed dressing agent is prepared by mixing a calcium magnesium phosphate fertilizer, 50% carbendazim wettable powder, 3% Zhongshengmycin wettable powder, 80% mancozeb wettable powder and a slow release component, and the seed potatoes are cut into blocks for seed dressing. The method can safely and efficiently prevent and treat diseases such as soft rot, bacterial wilt and wilt of potatoes, reduces the rotting rate of potato blocks, improves the emergence rate, yield and quality of potatoes, and is simple to operate, easy to master and suitable for large-scale popularization and application.

The application discloses an automatic control method for oxidation flocculation parameters in mancozeb wastewater treatment, and belongs to the technical field of industrial wastewater treatment and automatic control. In view of the problem that the existing process relies on manual experience and the oxidation and flocculation stages are improperly connected, the multifunctional modified material containing dithiocarbamate salt groups, quinone groups and pre-complexed manganese and zinc ions is prepared first; the material and hydrogen peroxide are synchronously added in the acid oxidation stage, and the control system monitors the redox potential change rate in real time; when the redox potential reaches the preset threshold value and the characteristic change point with the first derivative of zero or the change from positive to negative appears and is maintained for the preset maintenance time, the system is automatically adjusted to be alkaline, the modified material triggers the net capture and chelation crosslinking reaction, and finally solid-liquid separation is carried out; the polymer skeleton is protected from indiscriminate attack of free radicals, the problem of drug antagonism is overcome, and the stable and up-to-standard effluent quality is realized.

The invention discloses a preparation method and application of an electrochemical sensor for detecting mancozeb. Electrode modification is carried out by using SQDs to prepare a portable electrochemical sensor with SPCE or GCE as a substrate electrode, and the electrochemical sensor is applied to detection and analysis of MCZ in a water environment. An SQDs nano material is obtained through a top-down method, modification is carried out on the surface of SPCE or GCE through a dispensing method, modified SPCE or modified GCE of the SQDs nano material is constructed, then a portable electrochemical workstation controlled by a smart phone is combined, an electrochemical sensor technology platform with immediate response is constructed, and in-situ and on-site efficient detection of MCZ is achieved. The SQDs-based electrochemical sensor disclosed by the invention has the advantages of strong specificity, simplicity in preparation, high sensitivity and the like, and has a wide application prospect in MCZ detection.

The application discloses a kind of biological pesticides for efficiently preventing and treating asparagus stem blight, comprising the following raw materials by weight parts: carbendazim 5-10 parts, mancozeb 3-6 parts, chlorothalonil 5-8 parts, benlate emulsion 1-5 parts, bordeaux mixture 1-4 parts, bacteriostatic net 2-5 parts, water 150-200 parts, radix isatis 20-30 parts, coptis 15-25 parts, purslane 25-30 parts, dandelion 10-15 parts, isatis leaf 10-15 parts, amomum villosum 5-10 parts, anise 8-15 parts.The extract B extracted from Chinese herbal medicine radix isatis, coptis, purslane, dandelion, isatis leaf, amomum villosum and anise is added in chemical agent carbendazim, mancozeb, chlorothalonil, benlate emulsion, bordeaux mixture and bacteriostatic net, so that the biological pesticides for efficiently preventing and treating asparagus stem blight is finally obtained, which avoids the reduction of prevention and treatment effect on asparagus stem blight by using only chemical agent for a long time.The experimental data shows that the biological pesticides for efficiently preventing and treating asparagus stem blight prepared by the application can effectively prevent and treat asparagus stem blight.

The invention belongs to the technical field of pesticides, and relates to 11 bactericide compositions for mainly preventing and treating crop diseases caused by pyricularia oryzae and colletotrichum gloeosporioides. The compound YJY-22 provided by the invention is novel in structure and unique in action mode, and has no cross resistance with isoprothiolane, fenoxanil, pyraclostrobin, tricyclazole, azoxystrobin, mancozeb, captan, difenoconazole, prochloraz, chlorothalonil and tebuconazole. As the action mechanism of the compound YJY-22 is different from that of the medicament, and the compound YJY-22 and the medicament have no cross resistance, the compound YJY-22 and the medicament are compounded, so that the sterilization range can be expanded, the sterilization effect can be enhanced, the drug resistance of phytopathogen can be delayed, the safety to crops is good, the prevention and control spectrum is expanded, and the requirements of pesticide reduction and synergism are met.

The invention discloses a visual detection method for fruit and vegetable pesticide residues based on a colorimetric array sensor of a smart phone. The preparation method comprises the following specific steps: (1) preparing six types of silver nanoparticles with multifunctional surfaces by taking AgNO3 as a silver source, PVP (Polyvinyl Pyrrolidone), CTAB (Cetyltrimethyl Ammonium Bromide), Tween 80, branched polyethyleneimine, thiomalic acid and L-cysteine as surface modifiers and NaBH4 as a reducing agent and adopting a chemical reduction method; (2) silver nanoparticles are combined with gelatin, and a silver nanoparticle hydrogel patch is prepared; and 3) integrating a smart phone, and constructing a silver nanoparticle colorimetric array intelligent sensor with 1 * 6 sensing element points for visual detection and distinguishing of various pesticide residues on the surfaces of fruits and vegetables. The detection limits of the sensor on cyromazine, chlorpyrifos, imidacloprid, dichlorvos, mancozeb and cartap are 4.9 mg / L, 0.99 mg / L, 0.49 mg / L, 2 mg / L, 3 mg / L and 0.3 mg / L respectively. The method disclosed by the invention has the characteristics of low cost, high sensitivity, strong selectivity, intelligence, portability and the like, and can be used for synchronously detecting and distinguishing various analytes.

The invention discloses an intelligent detection and analysis method and system for mancozeb residues, and relates to the technical field of agricultural product detection.The method comprises the steps that data interaction with a detection unit is conducted, the number and batch data of products to be detected are read, sample distribution is determined, and random sample collection under distribution constraint is executed; after the collected samples are subjected to multi-dimensional residue detection, a multi-dimensional data set with environmental factor identifiers is established; extracting features by using a depth feature extraction channel, establishing a depth feature set, and performing global-local feature alignment; and inputting the alignment result and the environment factor into a decision layer to carry out high-dimensional feature fusion, and generating a residual detection decision through reverse verification. The technical problems that a traditional detection method in the prior art depends on a single detection dimension and is poor in detection precision, efficiency and environmental adaptability are solved, and the technical effects of improving the detection precision and the working efficiency and enhancing the environmental adaptability through multi-dimensional residual detection and high-dimensional feature fusion are achieved.

This invention relates to the field of pesticide technology, specifically to a fungicide composition containing pyraclostrobin and mancozeb. The pyraclostrobin comprises 3-15% by weight of the fungicide composition; the mancozeb comprises 20-75% by weight of the fungicide composition; and the fungicide composition further comprises alkoxylated shea butter alcohol.

The invention relates to a composition for preventing and treating tobacco black shank and application. The composition comprises methyl jasmonate, absolute ethyl alcohol and mancozeb. In the composition disclosed by the invention, the jasmonic acid methyl ester and the mancozeb can have a relatively good synergistic effect, the jasmonic acid methyl ester can enhance lignification of cell walls, and the mancozeb can inhibit germination of pathogenic bacteria of steamed stuffed buns in the same time and further block invasion of hyphae, so that a relatively good prevention and treatment effect is achieved.

The invention belongs to the technical field of plant tissue culture, and particularly relates to a method for establishing a rhododendron delavayi sterile leaf in-vitro regeneration system, which comprises the following steps: culturing rhododendron delavayi sterile leaves; performing in-vitro regeneration induction culture on sterile leaves of rhododendron delavayi; proliferation culture is conducted on the adventitious bud seedlings, wherein a proliferation culture medium used for proliferation culture is prepared from WPM, TDZ with the concentration being 0.5-0.7 mg / L, NAA with the concentration being 0.4-0.6 mg / L, GA with the concentration being 0.5-1 mg / L, mancozeb with the concentration being 300 mg / L and streptomycin sulfate with the concentration being 35-45 mg / L; by the adoption of the method for establishing the in-vitro regeneration system of the sterile leaves of the rhododendron delavayi, the in-vitro regeneration system of the leaves of the rhododendron delavayi can be established, and technical support is provided for standardized production of improved varieties of the rhododendron delavayi and establishment of a genetic transformation system.

11 fungicide compositions mainly used for controlling crop diseases caused by Pyricularia oryzae and Colletotrichum spp.. Compound YJY-22 has a novel structure and a unique mode of action, and exhibits no cross-resistance with isoprothiolane, fenoxanil, pyraclostrobin, tricyclazole, azoxystrobin, mancozeb, captan, difenoconazole, prochloraz, chlorothalonil, or tebuconazole. Because compound YJY-22 and the described agents have different mechanisms of action and have no cross-resistance, combining compound YJY-22 and the described agents not only can broaden the antifungal spectrum and enhance antifungal efficacy, but also can delay fungicide resistance of plant pathogens, ensure high crop safety, expand the control spectrum, and meet the requirement of pesticide reduction with increased efficiency.

The present application relates to the technical field of pesticides, especially to the field of IPC A01N, more particularly to a preparation method of metalaxyl-M·mancozeb dry suspension agent. The present application can reduce or even eliminate foam by first emulsifying and dispersing metalaxyl crude oil alone and then adding other raw materials such as mancozeb into a blending kettle, on the one hand, the efficiency of wet sanding is improved, and the preparation time is shortened, and the efficiency of wet sanding can be improved to 727 kg slurry / h; on the other hand, in the subsequent production spraying process, the stability of the pressure during spray drying is improved, the machine is not stopped for cleaning due to nozzle blockage, and the liquid spraying quality per unit time is improved, thereby the production capacity is improved, and the production capacity can be improved to 1100 kg / 8h.

The invention relates to the technical field of pesticide preparations, and provides mancozeb wettable powder and a preparation method thereof. The mancozeb wettable powder is prepared from the following raw materials in parts by weight: 82 to 85 parts of mancozeb, 7 to 10 parts of attapulgite-diatomite-nano aluminum oxide composite filler, 5 to 6 parts of dispersing agent, 1 to 2 parts of wetting agent and 0.5 to 1 part of stabilizing agent. According to the mancozeb wettable powder and the preparation method thereof provided by the invention, the adhesiveness of the mancozeb raw medicine is improved, the medicine loss caused by high temperature or low temperature is reduced, and the persistence of the medicine effect is improved.

The present application belongs to the technical field of pesticides, and particularly relates to a synergistic composition for preventing and treating mango anthracnose. The synergistic fungicidal composition is prepared by compounding compound I and compound II in a mass ratio of 1-200:200-1, wherein the compound I is limettin enol, and the compound II is prochloraz, silthiofam or mancozeb. The limettin enol, the prochloraz, the silthiofam or the mancozeb are compounded in a specific mass ratio range, have a synergistic effect on inhibiting the mango anthracnose pathogen, and can improve the prevention and treatment effect on the mango anthracnose. On this basis, the application amount of the pesticide can be reduced, and the environmental pollution and pesticide residues can be reduced. In addition, when the limettin enol, the prochloraz, the silthiofam or the mancozeb are compounded, the occurrence and development of the pathogen resistance can be delayed, and the risk of resistance can be reduced.

The invention discloses a visual detection method for mancozeb pesticide residues based on a smart phone, and belongs to the technical field of pesticide residue detection. The preparation method comprises the following specific steps: by taking silver nitrate as a silver source, a high-molecular polymer Tween 80 as a surface stabilizer and a dispersing agent and sodium borohydride as a reducing agent, preparing hydrophilic silver nanoparticles by adopting a room-temperature liquid-phase chemical reduction method; the method comprises the following steps: mixing silver nanoparticles with gelatin to obtain a silver nanoparticle gel patch containing a sensing element point; and dropwise adding a solution containing mancozeb onto the gel patch, and photographing and recording the color change of the gel patch before and after the reaction by using a mobile phone, thereby achieving the visual detection of mancozeb. The mancozeb with different concentrations is detected by adopting a smart phone, and the lowest detection limit of the obtained mancozeb is 3.3 mg / L (GB 20813). The method provided by the invention has the characteristics of high efficiency, economy, sensitive response, strong selectivity and the like, and can realize visual rapid quantitative and qualitative analysis of mancozeb.

The invention relates to the field of fungal pesticide preparations, in particular to a suspension medicament for preventing and treating asparagus stem blight and a preparation method thereof. The suspension agent provided by the invention can effectively prevent and treat asparagus stem blight, and the prevention effect can reach 94.95%-98.99%. The microorganism combination in the suspension agent can prevent pathogenic bacteria from further invading plants, and meanwhile, the disease resistance of the plants is improved; mancozeb can effectively kill fungi and reduce the number of pathogenic bacteria; the mixed extract of myristica fragrans and acanthopanax senticosus can provide nutrition for microorganisms, and can inhibit the growth of pathogenic bacteria. According to the invention, microorganisms, chemical drugs and a mixed extract of myristica fragrans and acanthopanax are combined for the first time, the effect of the microorganisms, the chemical drugs and the myristica fragrans and acanthopanax mixed extract is found to be optimal under a specific proportion, and embodiments prove that the three components have a synergistic effect. Therefore, the invention provides a novel prevention and treatment method, the dosage of chemical agents can be reduced, and environmental pollution is reduced.

The present invention relates to the field of nanopesticides, and relates to a mancozeb compounded nanosuspension having a particle size less than 100 nanometers and a preparation method therefor. According to the present invention, two or three components are diluted and mixed with water to form a mancozeb compounded nano-suspension below 100 nanometers. The preparation method comprises: when the stirring speed is not less than an effective stirring speed, adding a component I diluent into a component II diluent, or adding the component II diluent into the component I diluent; and forming a mancozeb compounded nanosuspension.

The invention discloses a paper-based detection method for detecting mancozeb, which comprises the following steps: by taking AgNO3 as a silver source, a high-molecular polymer Tween 20 as a surface stabilizer and a dispersing agent and NaBH4 as a reducing agent, preparing hydrophilic silver nanoparticles by adopting a room-temperature liquid-phase chemical reduction method; and printing the silver nanoparticles on filter paper by adopting a pipette to obtain the silver nanoparticle paper-based colorimetric sensor containing a sensing element point. A solution containing mancozeb is dropwise added to the paper-based sensor, and the color of the paper-based sensor changes, so that pesticide detection is achieved. A paper-based sensor is used for detecting mancozeb with different concentrations, a mancozeb standard colorimetric card is manufactured, a quantitative detection model M is established, and the lowest detection limit of mancozeb is 0.076 mu mol / L. The method provided by the invention has the characteristics of low cost, high sensitivity, strong selectivity and the like, and can realize visual rapid quantitative and qualitative analysis of mancozeb.

The invention discloses a bactericide composition containing picoxystrobin and application of the bactericide composition, and belongs to the technical field of pesticides. The active ingredients of the bactericide composition comprise picoxystrobin and mancozeb, and the weight ratio of picoxystrobin to mancozeb is (1: 80)-(1: 1). The invention finds that the effect of the mixture of picoxystrobin and mancozeb for preventing and treating the southern rust disease of corn is obviously higher than that of a single component, the synergistic effect of the mixture of picoxystrobin and mancozeb in the range of 1: 80 to 1: 1 is obvious, the optimal ratio is 1: 40, the composition has excellent prevention and treatment effect on the southern rust disease of corn, and the safety to crops and environment is improved.

The present invention relates to fungicidal compositions comprising as component 1) the compound (I) methyl (2Z)-3-methoxy-2-[(4-methylbiphenyl-3-yl)oxy]prop-2-enoate) and as active component 2) as active component 2) mancozeb (II-1) or metiram (II-2) wherein the weight ratio of compound (I) to compound (II) is from 10:1 to 1:10.

The invention discloses a homogeneous zinc complexing process of mancozeb, and belongs to the technical field of pesticide chemical industry. The method comprises the following steps: adding maneb and an aprotic polar solvent or ionic liquid into a reaction kettle, heating to 70-120 DEG C, continuously adding zinc salt, stirring and reacting for 50-150 minutes, filtering after the reaction is finished, and drying the solid to obtain mancozeb in a complete complexing state. The method has the advantages of process stability, low cost and good repeatability, and the prepared mancozeb has high content and high yield; the composition is safe to crops, environment-friendly and harmless to human and livestock, and the safe, high-quality, efficient, economical and environment-friendly production purpose is achieved.

The application discloses a fungicidal composition containing manganese edathamil-zinc, tebuconazole and difenoconazole as well as a preparation method and application thereof, relates to the field of pesticides, and includes the following as fungicidal effective components: manganese edathamil-zinc, tebuconazole and difenoconazole, wherein the weight ratio of the manganese edathamil-zinc, tebuconazole and difenoconazole is (0.1-99):(0.1-30):1. The application compounding the active ingredients of the drugs, namely the manganese edathamil-zinc, tebuconazole and difenoconazole, the three components do not produce mutual contradiction, the fungicidal spectrum is enlarged, the fungicidal efficiency is improved, obvious synergistic effect is shown, and the diseases in rice, soybean, wheat, peanut, corn, cotton, sunflower, vegetables and fruit trees can be prevented and treated, especially the diseases such as rust, sheath blight, anthracnose, leaf blight, target spot, brown spot and powdery mildew.

The application belongs to the technical field of pesticides, and particularly relates to a fungicide composition for preventing and treating oil olive trunk rot. The fungicide composition for preventing and treating oil olive trunk rot is prepared by binary compounding pyridine amide, myclobutanil, mancozeb or trifloxystrobin according to a mass ratio of 1-150:150-1. The pyridine amide is compounded with various existing pesticide components, and the compounding formula of the pyridine amide, myclobutanil, mancozeb or trifloxystrobin is screened out. The pyridine amide, myclobutanil, mancozeb or trifloxystrobin shows a synergistic effect on inhibiting the growth of the pathogenic fungus causing the oil olive trunk rot, can improve the prevention and treatment effect on the oil olive trunk rot, and can further reduce the application dose of the pesticide, relieve the environmental pollution and the pesticide residue.

The invention relates to a Lipu taro pest control method and pesticide spraying equipment, and the method comprises the following steps: carrying out primary ploughing on a planting land, and exposing the soil in the sun for 15-20 days; turning over for the second time, and meanwhile, applying fully decomposed farmyard manure and plant ash; a groove is dug in the edge of the planting field, a water storage tank surrounding the planting field is constructed, and water guided into the water storage tank is disinfected; preparing a liquid medicine from metalaxyl or carbendazim according to a set proportion, soaking the seed taros for 15-30 minutes, sterilizing, airing, and sowing; according to the method, dimethomorph, cymoxanil or fluopicolide propamocarb are prepared into liquid medicine according to a set proportion, and the liquid medicine is sprayed to the taros once every 7-10 days through spraying equipment and is continuously sprayed for 2-3 times; hymexazol or metalaxyl mancozeb is selected for root irrigation treatment, and 200-300 ml of hymexazol or metalaxyl mancozeb is metered for each plant. Compared with the prior art, repeated epidemic diseases are prevented, and the epidemic disease control effect is improved.

The invention discloses a biopesticide for efficiently preventing and treating asparagus stem blight. Comprising the following raw materials in parts by weight: 5-10 parts of carbendazim, 3-6 parts of mancozeb, 5-8 parts of chlorothalonil, 1-5 parts of benlyte missible oil, 1-4 parts of Bordeaux mixture, 2-5 parts of bacteriostat, 150-200 parts of water, 20-30 parts of radix isatidis, 15-25 parts of coptis chinensis, 25-30 parts of purslane, 10-15 parts of dandelion, 10-15 parts of folium isatidis, 5-10 parts of fructus amomi and 8-15 parts of fennel. An extracting solution B extracted from Chinese herbal medicines including radix isatidis, rhizoma coptidis, herba portulacae, herba taraxaci, folium isatidis, fructus amomi and fennel is added into chemical agents including carbendazim, mancozeb, chlorothalonil, benomyl missible oil, Bordeaux mixture and bacteriostat, so that the biopesticide for efficiently preventing and treating the asparagus stem blight is finally obtained. The biological pesticide for efficiently preventing and treating the asparagus stem blight avoids the situation that the prevention and treatment effect on the asparagus stem blight is reduced due to the fact that only chemical agents are used for a long time, and experimental data show that the prepared biological pesticide for efficiently preventing and treating the asparagus stem blight can effectively and efficiently prevent and treat the asparagus stem blight.