TW200803719A - An improved solid formulation of agrochemicals for paddy field - Google Patents

Abstract

An improved solid formulation of agrochemicals for paddy field characterized in that a said solid formulation comprises containing agricultural chemical active component which is columnar granules and the number of the columnar granules having particle length of 3.5 mm or more is less or equal to six pieces per gram of said solid formulation.

Description

200803719 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to an improved agrochemical solid state garment for use in rice fields. More particularly, the present invention relates to an improved agricultural vehicle σσ solid preparation for rice fields which can be stably discharged without being spread by a grain spreader for rice transplanting. Clog the grain spreader. [Prior Art] Recently, in the cultivation of crops, labor saving (lab〇r_saving) for diseases, pests and 10 weeds is increasingly required. For example, in the control of weeds in rice cultivation, one-shot pesticides for rice have been developed, that is, pesticides that can control weeds in one spread. Further, as a labor-saving application method, agricultural use has been developed for using a rice transplanter (for example, "INN〇VAT〇R _MAKUBEE", manufactured by 15 MARUYAMAMFg·, C.·, Ine·). Method for disseminating chemical solid-state formulations. When using a rice transplanter to spread a chemical with a grain spreader, for example, a solid formulation of a chemical for use in a rice can be added to the hopper portion of a rice transplanter and then passed. After approaching the mesh screen at the outlet of the hopper, the solid-state 2〇 material passes through the passage to the (Shutter) portion and is discharged by opening the gate. - However, since the solid preparation has various physical properties f (volumetric density, grain) Diameter, grain length, etc.), therefore there is a problem of affecting the spread of agrochemicals due to clogging of the solid formulation between the hopper outlet portion and the gate portion, which causes the discharge of the grain spreader to decrease or block 200803719 Avoid clogging of solid formulation by increasing the mesh opening of the hopper section and/or expanding the passage of the hopper to the gate section. Because of the complexity, the solution of the clogging problem not only needs to improve the rice transplanter, but also the improvement of the form of the solid and solid preparation. 5 For the solid state added to the rice transplanter by modified The results of in-depth studies of the form of the formulation to solve the clogging problem have been found to be solid state preparation if the number of granules of a certain length is limited in a solid formulation in the form of columnar granules containing agrochemically active components. The invention can be carried out smoothly and stably without reducing the application amount or clogging the rice transplanting machine, and the present invention has been completed. [Summary of the Invention] An improved solid-state preparation of agrochemicals for rice fields has been found. The product 'is characterized in that the solid formulation contains agrochemically active component and is 15 columnar particles, and the number of columnar particles having a grain length greater than or equal to 3.5 mm per gram of the solid formulation is less than or equal to six In addition, methods for controlling pests in rice fields have also been discovered, which are characterized by the use of rice transplanting seeds while rice transplanting The above modified solid formulation is applied to rice fields. This method is very suitable for controlling 20 harmful organisms in rice fields. In the present specification, the "grain length" of the solid preparation refers to the longitudinal ends of the columnar particles. the distance. The improved agrochemical solid-state formulation for rice fields according to the present invention can be stably spread by a rice transplanter without clogging by a rice transplanter. 200803719 The agrochemically active component contained in the solid formulation of the present invention comprises an agrochemical applied to rice fields. Specifically, examples which may be mentioned include bioactive compounds contained in the chemical form in the form of active ingredients and agricultural fertilizers, such as various insecticides (acaricides), fungicides, herbicides (plants) Formulations, safeners, etc. They may be used in the form of a single dose or a combination of two or more. More specifically, examples that may be mentioned include, but are not limited to, the following agrochemically active components. Herbicidally active compounds which may be mentioned include, for example, anilofos, benriiiocarb, butachlor, cafenstrole, cumyluron, valerian Ketone (indanofan), dimepiperate, fentrazamide, mefenacet, oxadiazon, oxaziclomefone, cyclopentyl ketone (pentoxazone), pretilachlor, pyributycarb, pyrifalid, thenylchlor, oxadiargyl, butamifos, pentofuran Esprocarb), dithiopyr, etobenzanid, pyrimenobac-methyl, HOK-201, cyhalofop-butyl, metamifop, clomeprop, ring丙叫石黄隆(〇5^1〇8111£&111111:011), bite grass (^^11^1 generation 8&16), bensulfuron-methyl, double loop _ (benzobicylclin), benzofenap, bromobutide, dymron, dimethametryn Long cross-ethoxy pain (ethoxysulfuron), the discharge port than lung cancer continued (imazosulfuron) ,. Pyrazolate, σ than pyrazosulfuron-ethyl, quinoclamine, pyrazoxifen, 200803719 halosulfuron, pyraclonil, pyrimisulfan (KUH021) , ΤΉ-547, mesotrione, penoxsulam, orth〇suifamuron, simetryn, bentazone, and the like. In addition to the above examples, herbicidal active compounds which can be used as herbicides for rice fields can also be included. Insecticidal active compounds which may be mentioned include, for example, at least one neonicotinyl insecticide, phenylpyrazole insecticide, cyanoform insecticide and pyrethrum A compound of an ester insecticide. Preferable examples of the above neonicotinoid insecticide which may be mentioned include imidacloprid, thiacloprid, acetamiprid, clothianidin, thiamethoxam, σ 虫 胺 胺 (dinotefuran) and the like. Preferable examples of the phenylpyrazole insecticide which may be mentioned include fipronil, ethiprole and the like. Preferable examples of the urethane insecticide which may be mentioned include pr〇P〇xur, fenobucarb, benfuracarb, carbosulfan. Preferred examples of the pyrethroid-based insecticide which may be mentioned include ethofenprox, cyproterone (Cyd〇sal) and the like. The fungicidal active compounds which may be mentioned include, for example, carpropamid, tricyclazole, probenazole, pyridone (pyr〇qUii〇n), dichlocimet, 嗔Thinyl, isoprothiolane, IBP, fenoxanil, azoXyStr〇bin, metominostrobin, and the like. The improved agrochemical solid formulation 200803719 for use in rice fields of the present invention can be formulated into a conventional formulation commonly used in agronomics, such as preparations such as granules, water-dispersible granules and the like. Form ', an improvement in agrochemicals in rice fields "state: the formulations can be prepared according to methods known per se. For example they can be prepared by mixing chemically active fractions with a carrier or a solid diluent - as needed Agents such as surfactants, binders, decomposition inhibitors, stabilizers, etc. are mixed to form granules. The ones that have been mentioned 10 include but are limited to the following frequency examples, such as clay kaolin, sericite, Zeeklite, Fine powder of minerals such as talc, acid clay, carbonated feed, shigui bath soil, zeolite; organic materials such as corn house powder, etc.; inorganic substances such as synthetic & _, etc. Among them, clay, talc and carbonic acid dance are preferred. Surfactants include, but are not limited to, the following specific examples: anionic surfactants, such as silk sulfuric acid, polyoxyalkylene alkyl sulphur, polyoxyalkylene phenyl sulphuric acid, B a sodium salt, a salt or an ammonium salt of a sulfuric acid or a polyoxyethylene-polyoxypropylene block polymer sulfuric acid; an alkylsulfonic acid, a dialkylsulfofylsuccinic acid, Alkylbenzenesulfonic acid, monoalkyl or dialkylnaphthalenesulfonic acid, naphthalenesulfonic acid-formaldehyde condensate, lignosulfonic acid, alkylene oxide phenyl ether acid or polyoxyethylene alkyl ether Sodium salt, calcium salt, ammonium salt or alkanolamine salt of acid; polyoxyethylene alkyl ether phosphate, polyoxyethylene monoalkyl or dialkylphenyl ether phosphate, polyoxyethylene benzyl (or styryl) a sodium salt or a calcium salt of polystyrene-polyoxyethylene-polyoxypropylene block polymer phosphoric acid, etc. Nonionic surfactants which may be mentioned include, for example, polyoxyethylene alkyl ethers, polyoxygen Ethylene alkyl stupyl ether, polyoxyethylene alkyl phenyl ether monofurfural condensate, polyoxyethylene-polyoxypropylene block polymer, polyoxyethylene-polyoxygen oxide 20 200803719 propylene block polymer alkylphenyl Ether, polyoxyethylene benzyl (or styryl) phenyl ether, polyoxyethylene-polyoxypropylene nucleus polymer segment (or phenethyl), ethers ^ Sorbitan fatty acid vinegar, polyoxyethyl hydrazine fatty acid vinegar, polyoxyethylene lantana fatty acid ester, polyoxyethylene ricinoleic ether, etc. 5 The binders that may be mentioned include but are not limited to the following specific examples For example, starchy natural substances such as soluble starch, carboxymethyl starch, dextrin, etc.; natural substances such as sodium alginate, gum arabic, gelatin, casein, etc.; cellulose derivatives such as methyl cellulose, carboxymethyl Fibrin sodium salt, etc.; polyvinyl alcohol, polyethylene methyl hydrazine, polyethylene, ketone, polyvinyl alcohol-vinyl sulphide copolymer 10; polypropylene decylamine; acrylic acid, methacrylic acid or its An ester or a ruthenium character or copolymer; an emulsion of a polymer or copolymer of polyethylene glycol, polyethylene oxide, acetoacetate or styrene; a copolymer of ethylene and vinyl acetate An emulsion; an emulsion of a copolymer of vinyl acetate and acrylate, and the like. Among them, potassium salts of polyethylene glycol, dextrin and carboxymethyl cellulose are preferred. The improved solid preparation of the agrochemical for rice fields of the present invention can be easily prepared by the same method as the preparation of a general solid preparation (granules, water-dispersible granules, etc.). The grain length of the solid formulation can be controlled by conditions such as the composition of the adjuvant, the treatment and/or screening of the particle classifier or the pulverizer. Λ 20 An improved solid formulation of an agrochemical for rice fields according to the present invention can be prepared, for example, by mixing an agrochemical composition with an auxiliary agent such as a filler, and then with the added water and auxiliary chemicals. Kneaded and granulated using an extrusion granulator. If the solid formulation obtained contains longer particles, the longer particles can be removed by various means: 200803719 The product is passed through a particle classifier before drying: MARUME Hall R, manufactured by Fuji paudal c〇, Ud) The granules are gently pulverized by a pulverizer (for example, pulverized fresh), or the mesh of the mesh is adjusted while sieving.优遴搜楼目(五)^ M Select a sieve that is slightly larger than the extrusion diameter (for example, 'If the extrusion diameter is 1 side, select the mesh with the K40 or L18 surface as the mesh _). The optimum mesh size can be determined based on experience, management and operating conditions. The 10 原 如上 如上 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 However, the content may be appropriately changed depending on factors such as the type of agrochemical. The improved agrochemical solid-state formulation for rice fields of the present invention can be applied to rice fields by spreading or the like. It may be preferably applied to rice fields using a rice transplanter at the time of rice transplanting. The rice transplanter sprinkler is a machine that can be equipped, for example, on a rice transplanter and can spread agrochemicals while rice transplanting. A specific example that may be mentioned is "INNOVATOR-MAKUBEE,, (manufactured by MARUYAMA Mfg., C〇·, Inc., trade name). The improved agrochemical solid formulation for use in rice fields of the present invention is suitable for application at the same time as rice transplanting, for example by using a rice transplanter with a grain spreader. It can be mentioned that the amount of spreading of the solid formulation is, for example, a solid formulation of ~ (9) kg, preferably 2.5 to 30 kg per 1 hectare of paddy field. The improved agrochemical solid formulation suitable for application to rice fields by a rice blasting machine according to the present invention may have the form of columnar granules. -11 - 200803719 For example, a cylindrical shape, a polygonal column shape such as a square column shape, or the like. It is preferably cylindrical, and particularly preferably an upright cylindrical shape. The improved agrochemical solid formulation for use in rice fields of the present invention preferably has an end face diameter generally in the range of 0.3 to 1.7 mm, in particular in the range of o 2 mm (in the case of a cylindrical shape) The diameter of the circle, in the case of a polygonal column, refers to the maximum diagonal distance of the polygon. Hereinafter referred to as "particle size"). The improved agrochemical solid formulation for use in rice fields of the present invention preferably contains as few longer particles as possible. It is important that the number of columnar particles having a grain length of 3.5 mm or more per gram of the solid preparation is less than or equal to six to avoid a decrease in the application amount or clogging of the rice transplanter with the grain spreader. As shown in the test Example 2 below, if the number is more than 6, the application amount is decreased; if the number is large, clogging occurs. In these cases, they are not suitable for spreading by rice cultivating with a grain spreader. [Embodiment] Hereinafter, the present invention will be more specifically described by the following examples. The present invention is not limited to this. 2〇 Formulation Example 1 : (Formulation A) 2·0 parts by weight 0·75 parts by weight 97.25 parts by weight of behenamide bensulfuron-sulfur fine mineral powder and auxiliary agent 200803719 In the above amount of tetrazolium After the combination of oxalic acid, bensulfuron-methyl, fine mineral powder and auxiliaries, a suitable amount of water was added and kneaded to obtain a chelating product, which was granulated using an extrusion granulator (extrusion diameter: 0.8 mm). The obtained granules were pulverized and sieved to obtain a solid formulation of the present invention. 0.6 parts by weight of 4.0 parts by weight of 2.0 parts by weight of 93.4 parts by weight of 10 Formulation Example 2: (Formulation B) Cyclopropanol-resistant chlorpyrifos tetrasporin fine mineral powder and adjuvant with formulation Example 1 The above composition was granulated, pulverized and sieved in a 1070 μm mesh sieve in the same manner to obtain a solid formulation of the present invention. 15 Formulation Example 3: (Formulation C) Tetrachloramine brombutaline Bensulfuron 20 Fine Mineral Powder and Auxiliary to Formulation Example 2.0 parts by weight 9.0 parts by weight 0.75 parts by weight 88.25 by weight The above composition was granulated, pulverized and sieved with a 1180 μη mesh sieve in the same manner to obtain a solid preparation of the present invention. 0 -13-200803719 5 Formulation Example 4: (Formulation D) Four sedge Amino bromobutazone bensulfuron-methyl chlorpyrifos mineral powder and auxiliary agent 2.0 parts by weight 7.5 parts by weight 0.51 part by weight 4.5 parts by weight 85.49 parts by weight The above composition was granulated in the same manner as in the formulation example 1. , ίο smashed and sieved with a 1180 μη mesh sieve to obtain the solid formulation of the present invention. 0 Formulation Example 5: (Comparative Formulation a) 15 Sijunthrachlor brombutaline Benzosulfuron Macro-fine mineral powder and auxiliary agent 2.0 parts by weight 7.5 parts by weight 0.51 parts by weight 4.5 parts by weight 85.49 parts by weight 20 The above composition was granulated (but not pulverized) as in Formulation Example 1 to obtain a comparative preparation. Formulation Example 6··(Comparative Formula b) Cyclopropyl Mouth Hydroxide 0.2 parts by weight-14-200803719 1.5 parts by weight 98.3 parts by weight of cyclopentazone fine mineral powder and auxiliary agent to obtain the above composition For example, the formulation 丨 granulation (but not pulverized to compare the formulation. ―制歹丨J 7 ··(Comparative formulation c) Cyclopropsulfuron oxime · 6 parts by weight of oxalofen The valerian fine mineral powder and the auxiliary agent 4.0 parts by weight of 2.0 parts by weight and 93.4 parts by weight. The above composition is granulated according to the example of the preparation (but the preparation is not used. The obtained 15 20 times toU: ^ has 3.5 mm or more The number of particles in the long grain length method μ takes about 4g from a solid preparation of 1 kg and weighs (wg) the number of particles having a grain length of 3.5 mm or longer is calculated per lg of the formulation and * according to the following formula The number of particles with a grain length of 3.5 mm or longer in the formula (4) with a grain length of 3.5 mm or longer in the formulation § i & (granule / g) = T + W 1 Mm By the above method, the number of kekes per gram or longer flank, the AH is equipped with ^ 15- 200803719 Formulations. The results are shown in Table 1. Table 1 Median particle size of the solid formulation of the solid formulation _ - (leg) 3.5 匪 or suspension of granules per gram of each formulation (granules / g) 1.8 Formulation A ~~~------.- 0.8 Formulation B ~-------__ 0.9 --~~-~~~----- 3,3 Formulation C 0.8 5.0 Formulation D 0.8 5.2 Comparative preparation a 0.8 7.6 Comparative preparation b L2 12.5 Comparative preparation c 0.9 17.1 Test implementation Spreading test of the rice transplanter with a grain spreader (change in application amount) Use "INNOVATOR-MAKUBEE" ]VIARUYAMA MFg·,

Co·, Inc. manufacture, trade name) As a rice transplanter with a grain spreader, various solid preparations (about 4 kg) were added to the hopper for (grazing) for 15 minutes, and measured every 1 minute for the next 15 minutes. A single application amount (g). The application amount change was calculated by the following formula. Change in application amount (g/min) = application amount per minute (g) + first minute application amount (g) -16 - 200803719 The judgment criteria of the application amount of each solid preparation are as follows. Stable: The application amount change of 12 or more measurements in the 15 measurements is in the range of 0.90 to 1.10; Reduction: The change in the application amount of 10 or less measurements in the 15 measurements is 5 at 0·90~1 · 10 Within the range, or the amount of application change is even 0.80 or lower at a time; clogging: the amount of application varies by 0.50 or more in half or more measurements. The solid formulation judged to be "stable" is suitable for spreading by rice transplanting with a ίο granulator, and the solid formulation judged to be ''reduced' or 'blocked'' is not suitable for spreading. For Formulation AD and Comparative Formula ac The results of the above test, the change in the application amount are shown in Table 2. -17- 200803719 Table 2: Spreading test of the grain transplanter for rice transplanting (change in application amount) (years and minutes)

Formulation A Formulation B Formulation C Formulation D Comparative formulation a Comparative formulation b Comparative formulation C Particle count (Note 1) 1.8 3.3 5.0 52 7.6 12.5 17.1 1 Min 1.00 1.00 LOO 1.00 1.00 1.00 1.00 1.00 2 Min 1.00 LOO 1.04 L02 1.02 1.51 0.27 3 Min 1.00 1.03 1.03 1.02 0.41 0.33 0.24 4 Min 0.97 1.00 1.01 1.00 0.86 0.22 0.12 5 Min 1.00 0.99 1.00 1.01 0.99 0.33 0.32 6 Min 0.98 LOO 1.02 1.03 1.00 0.86 0.30 7 Min 0.98 1.03 1.05 1.02 1.00 0.58 0.17 8 Min 0.96 1.04 1.04 1.03 0.66 0.40 0.17 9 Min 0.96 0.99 1.03 1.06 0.91 0.85 1—--- 0.06 10 Min 0.98 0.95 1.04 1.06 1.01 0.30 031 11 Min 0.96 1.01 1.04 1.03 0.92 0.42 0.20 12 Min 0.98 1.03 1.04 0.98 0.83 0.74 ------ 0.20 13 Min 1.00 0.97 1.03 ------ 1.04 0.69 034 ---- 0.21 14 Min 15 Min 1.00 0.99 0.96 1.02 1.02 ——--- 1.01 1.06 0.75 0.31 0.24 1.01 —— 0.94 0.76 0.23 Stable and stable ------ Stable and stable - Reduce clogging----- Blocking------- -----J Note 1:=Two products have a longer one -18-long grain length

Claims (1)

200803719 X. Patent Application Range: 1. An improved agrochemical solid state formulation for use in rice fields, characterized in that the solid formulation contains agrochemically active components and is columnar particles, and each gram of said solid state In the formulation, the number of columnar particles having a grain length equal to 5 or greater than 3.5 mm is less than or equal to six. 2. A method for controlling pests in rice fields, which is characterized in that, when rice is transplanted, a rice cultivating machine is used to apply a grain spreader to a rice field. 'Agrochemicals for rice fields improved as described in claim 1 Solid formulation. Ίο 3 — The use of an improved solid formulation as described in claim 1 of the patent application for controlling pests in rice fields. -19- 200803719 VII. Designated representative map: (1) The representative representative of the case is: (No). (2) A brief description of the symbol of the representative figure: None 8. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: