JP5176221B2 - A fine granule containing an acetolactate synthesis inhibitor. - Google Patents

Description

  The present invention relates to a technique for efficiently controlling unnecessary and harmful weeds that grow in a living environment.

  Regardless of farmland or non-agricultural land, weeds overgrow, leading to a decline in agricultural productivity and a worsening living environment, and herbicides and growth inhibitors are widely used as countermeasures. Among them, an acetolactate synthesis inhibitor (hereinafter referred to as an ALSI agent) has high selectivity and has extremely high herbicidal activity only in a specific grass species. Widely used in management areas such as greening crops, railways, residential land, playgrounds, roads, parking lots, etc. The properties of the ALSI agent include those that are mainly absorbed from the foliage and exhibit an effect, unstable in an aqueous solution, and poor solubility in organic solvents. For this reason, except for the use of granules with a large particle size in paddy fields where water can be used as a medium, most of the wettable powder is sprayed on the foliage, and only an emulsion is used in a very small part. is there.

One of the dosage forms of agrochemicals is a fine granule with a particle size of 0.1 to 0.3 mm, which is smaller than the granule, and is easier to use than emulsions and wettable powders diluted with water. And it is used for the purpose of preventing scattering. For example, it is used in fatty acid herbicides and plant hormone herbicides that are absorbed from both foliage and roots, and in addition, photosynthesis inhibiting herbicide diuron (ISO name diuron) is a 3% granule As a trade name (Dyrone fine granule), a mixture of fatty acid herbicide and plant hormone herbicide (trade name Micaroc fine granule) is on the market. Furthermore, it is also a known fact that a drug that exhibits an effect by absorption from foliage is used as a fine granule. For example, a method is shown in which glufosinate (ISO name: glucosinate-ammonium) is added to attapulgite or the like and used as a fine granule (see Patent Document 1). In addition, a method for preparing a fine granule resistant to weather fluctuation by mixing glufosinate or glyphosate (ISO name glyphosate) and a herbicide having soil treatment activity is shown (see Patent Document 2 and Patent Document 3). ).
Patent 6-78204 JP 2003-192510 A JP2003-192511 In addition, in order to eliminate spray spots, insecticides use a finer particle F having a particle size of 0.063 to 0.21 mm.

  It is a big problem to reduce the amount of chemicals dropped into the environment and to control weeds quickly, effectively and simply. In general, ALSI agents cause plants to die by inhibiting the biosynthesis system of amino acids at a very low dose. Therefore, the onset and completion of effects are generally slow. In addition, because of its physicochemical properties such as a narrow herbicidal spectrum, low soil treatment effect, low stability in water as a compound, and low solubility in organic solvents, it is hydrated except that granules are used in paddy fields. Disadvantages such as the absence of other dosage forms, with only agents and very partial emulsions, are recognized.

  There are several drawbacks to the currently commercialized agrochemical dosage forms. For example, the granule does not adhere to the foliage due to its large particle size, and is effective only when it is absorbed from the root part for weeds in the growing season, so weeding due to environmental factors such as rainfall after treatment and soil moisture The effect depends on the amount of drug and the number of days until the effect is completed. In addition, the dosage form used by suspending in water requires labor for preparing a chemical solution and a special spraying device, and in addition, the drug is scattered greatly. Furthermore, it cannot be used in places with poor water use.

  In addition, the use of selective herbicides to prevent soil runoff and to suppress weed plant height by switching to a monocotyledonous vegetation that has superior root system development compared to dicotyledonous plants is being studied. Yes.

  The inventors of the present invention have repeatedly studied on the atomization of an ALSI agent that has not been used in the past, and adhered to a fine mineral of 0.1 to 0.3 mm using a binder, or a mineral with a high oil supply ability. While ensuring absorption from the foliage by absorption, a chemical was not prepared, and a simple, safe and non-scattering drug was completed. Furthermore, the present inventors have found that by mixing a drug that is absorbed from other foliage and roots and exhibits an effect, the herbicidal spectrum can be expanded, the effect expression rate can be increased, and the residual effect can be improved.

  Examples of the acetolactate synthesis inhibitor (ALIS agent) according to the present invention include iodosulfuron methyl sodium salt (ISO name iodosulfuron-methyl-sodium), cyclosulfamuron (ISO name cyclosulfamuron), trifloxysulfuron sodium salt (ISO Name trifloxysulfuron-sodium) and metsulfuron methyl (ISO name metsulfuron-methyl). The appropriate drug content is 0.003-0.03% by weight for iodosulfuron methyl sodium salt, trifloxysulfuron sodium salt, and metsulfuron methyl, and 0.03% for cyclosulfamuron. ~ 0.3% by weight is suitable.

  In order to prepare the fine granule according to the present invention, it can be easily produced by putting or spraying a powder or solution or suspension of a binder and an ALSI agent into a stirring mineral carrier.

  As the mineral carrier to be used, attapulgite, quartzite, calcined diatomaceous earth, zeolite, sepiolite, calcium carbonate, montmorillonite and the like can be used. The finer the particle size of the granule, the higher the adhesion efficiency to the leaf surface. However, when the wind is strong, the fine particles may scatter and cause phytotoxicity to surrounding plants. On the other hand, when it is rough, adhesion to the leaf surface is lowered and it is difficult to obtain a sufficient effect. Accordingly, a particle size of 0.1 to 0.3 mm, which is classified as a fine granule in Japan, is preferable.

  In order to attach the active ingredient to the mineral carrier, it is important to use a binder. Binders include high-boiling and high-viscosity solvents such as ethylene glycol, higher alcohol, higher fatty acid ester, mineral oil, dimethyl sulfoxide, vegetable oil, propylene glycol, polyethylene glycol, polypropylene glycol, propylene glycol monomethyl ether, and 1-methylpyrrolidone. , Pastes such as carboxymethyl cellulose, dextran, polyvinyl alcohol, polyvinyl pyrrolidone, and various surfactants can be used. In particular, surfactants not only help adhere the photosynthesis-inhibiting herbicide to the carrier mineral due to high viscosity, but also promote the spread of the sprayed active ingredients on the plant body and prompt penetration into the plant body. It has the function to stabilize.

  There are many surfactants. For example, anionic surfactants include alkylbenzene sulfonate, alkylnaphthalene sulfonate, dialkyl sulfosuccinate, dialkyl phosphate, fatty acid salt, polyacrylic acid salt, polycarboxylic acid salt. Acid salts, monoalkyl phosphates, lignin sulfonates and the like. Cationic surfactants include alkyldimethylbenzalkonium chloride, alkyltrimethylammonium chloride, alkylpentamethylpropylenediamine dichloride, alkyl-N-methylpyridinium bromide, benzethonium chloride, polyoxyethylene alkylamine, methyl polyoxyethylene alkylammonium And chloride. Nonionic surfactants include sorbitan fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl phenyl ether formalin condensate, polyoxyalkylene benzyl phenyl ether, polyoxyethylene fatty acid ester, And polyoxyethylene sorbitan fatty acid ester. Examples of zwitterionic surfactants include alkylbetaines. A water-soluble high-boiling organic substance containing a surfactant is used alone or as a mixture, and the amount used is 0.1 to 5.0% by weight based on the total weight of the preparation.

  If the granule is easily consolidated by using a high-viscosity binder, it can be prevented by adding 0.5 to 5.0% by weight of fine powder such as porous silicic acid.

In addition, it is possible to prepare a mixture of herbicides having a soil treatment effect in order to control weeds that occur afterwards when adhesion to the leaf surface is limited due to weather conditions or to control weeds that are generated next. For example, amino acid herbicides such as glyphosate (ISO name glyphosate) or glufosinate (ISO name glufosinate-ammonium), isouron (ISO name isouron), carbbutyrate (ISO name karbutilate), cyanazine (ISO name cyanazine), diuron (ISO name) ), Terbacil (ISO name terbacil), tebuthiuron (ISO name tebuthiuron), bromacil (ISO name bromacil), photosynthesis inhibitors such as metribuzin (ISO name metricibuzin). Alachlor (ISO name alachlor), dimethenamide (ISO name dimethylenamide), tenyl chlor (ISO name tenchllor), butachlor (ISO name butachlor), pretilachlor (ISO name pretilachlor), metolachlor (ISO name metohalochol amide) . Dinitroaniline herbicides such as pendimethalin (ISO name pendimethalin) trifluralin (ISO name trifluralin), prodiamine (ISO name prodiamin), benfuralin (ISO name befluralin), oxadialgyl (ISO name oxadiargyl), SO4 In addition to protoporphyrinogen oxidase inhibitors such as name pyraflufen-ethyl), synmethylin (ISO name cinmethyl), ashram (ISO name asuram), flupropanate sodium salt (ISO name flupropanate-sodium) and the like.
By mixing herbicides having different functions, it is possible to use them at a dose below the commonly used dose. The content of these drugs varies depending on the drug, but is 0.005 to 3.0% by weight.

  By making the ALSI agent used as a wettable powder into a fine granule, the effect is stabilized while improving the quick-acting property as compared with the conventional dosage form, and at the same time, a simple use without scattering is enabled. In addition, by adding a foliar treatment agent or a soil treatment agent to the ALSI agent, it is possible to impart quick action and suppression of subsequent generation. Furthermore, depending on the combination of the drugs, it is also possible to reduce the weed plant height by reducing the amount of dropped drug.

Embodiments of the invention will be described based on formulation examples.
Formulation Example 1 Preparation of Methosulfuron Methyl 0.008% Fine Granules In a stirring tank of Mechano Mill (granulation coating machine, Okada Seiko Co., Ltd.), 485.5 g of fine silica stone (Silica Sand V7, Mikawa Silica Co., Ltd.) And metsulfuron methyl 60% wettable powder (Saber DF wettable powder, DuPont Co., Ltd.) as a 2% aqueous solution was charged with 2.0 g and mixed for 1 minute while rotating at 350 rpm. Next, 7.5 g of Neoscore 2339 (polyoxyalkylene monoalkyl ether, product of Toho Chemical Co., Ltd.) was slowly added while rotating at 400 rpm. Subsequently, 492 g of a fine particle agent obtained by adding 5.0 g of porous silicic acid (Carplex XR, Shionogi & Co., Ltd. product), taking out after stirring for 1 minute, air drying and sieving 0.1 to 0.3 mm particles. Got.

(Formulation example 2) Preparation of cyclosulfamuron 0.1% fine powder 482.5g of fine silica stone and 10% cyclosulfamuron wettable powder (double up wettable powder, BASF Agro Co., Ltd. ) 5.0 g was charged and mixed for 1 minute while rotating at 350 rpm. Next, 7.5 g of 65% dioctylsulfosuccinate (Jerapon DOS / PC-65, Rhodia Nikka Co., Ltd.) was slowly added while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, air-dried, and 493 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles was obtained.

(Formulation example 3) Preparation of iodosulfuron methyl sodium salt 0.01% fine granule 485.0 g of fine silica stone and 5% iodosulfuron methyl sodium salt granule wettable powder (Hussar granule wettable powder, Bayer CropScience Co., Ltd.) as a 2% suspension was charged with 2.5 g and mixed for 1 minute while rotating at 350 rpm. Next, 7.5 g of 65% dioctylsulfosuccinate was slowly added while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 492 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

Formulation Example 4 Preparation of Trifloxysulfuron Sodium Salt 0.01% Fine Granules 484.9 g of fine silica stone and 72% trifloxysulfuron sodium salt wettable powder (monument granule wettable powder, Syngenta) 2.6 g as a 2% aqueous solution was added and mixed for 1 minute while rotating at 350 rpm. Next, 7.5 g of 65% dioctylsulfosuccinate was slowly added while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 492 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Formulation Example 5) Preparation of Thifensulfuron Methyl 0.04% Fine Granules 488.0g of fine silicalite and Thifensulfuron methyl (ISO name thifensulfuron-methyl) 75% wettable powder (Harmony 75DF Hydration) 2.0 g as a 10% suspension was added and mixed for 1 minute while rotating at 350 rpm. Next, 5.0 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 496 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Formulation Example 6) Preparation of Trifloxysulfuron Sodium Salt 0.008% Metosulfuron Methyl 0.008% Fine Granules 483.5 g of fine silica stone and 2.0 g of 2% trifloxysulfuron sodium salt solution in a stirring tank of Mechanomyl Then, 2.0 g of a 2% solution of metsulfuron methyl was charged and mixed for 1 minute while rotating at 350 rpm. Next, 7.5 g of 65% dioctylsulfosuccinate was slowly added while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 492 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Formulation Example 7) Preparation of methosulfuron methyl 0.008% glyphosate 2.0% zeolite fine granules 448.7 g of fine zeolite (Zeogreen Fine Granule No. 8, product of Nippon Zeolite Co., Ltd.) and glyphosate isopropylamine in a stirring tank of Mechanomyl 24.3 g of 41% solution (Round-up solution, Nippon Monsanto Co., Ltd.) and 2.0 g of metsulfuron methyl 2% solution were charged and mixed for 1 minute while rotating at 350 rpm. Next, 20.0 g of 65% dioctyl sulfosuccinate was slowly added while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 492 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Formulation Example 8) Preparation of Methosulfuronmethyl 0.008% Bromacil 1.0% Fine Granules 479.2g of fine silica stone and 80% bromacil wettable powder (Hiber X wettable powder, DuPont product) ) 6.3 g was charged and mixed for 1 minute while rotating at 350 rpm. Next, 2.0 g of metsulfuron methyl 2% solution was slowly added dropwise and mixed for another 1 minute. Next, 7.5 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 496 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

Formulation Example 9 Preparation of Methosulfuron Methyl 0.008% Diuron 2.0% Fine Granules 475.3 g of fine silica and 78.5% diuron wettable powder (Carmex D wettable powder, Nagase Griffin Co., Ltd. product) 12.7 g was charged and mixed for 1 minute while rotating at 350 rpm. Next, 2.0 g of metsulfuron methyl 2% solution was slowly added dropwise and mixed for another 1 minute. Next, 5.0 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, air-dried, and 495 g of fine particles obtained by sieving 0.1 to 0.3 mm particles were obtained.

(Formulation Example 10) Preparation of Methosulfuron Methyl 0.008% Ashram 1.5% Fine Granules 471.7 g of fine zeolite in Mechanomill's stirring tank and 80% Ashram water solvent (Argylan Water Solvent, Aventy Srop Science Co., Ltd. product) 9.8 g was charged and mixed for 1 minute while rotating at 350 rpm. Next, 2.0 g of metsulfuron methyl 2% solution was slowly added dropwise and mixed for another 1 minute. Next, 11.5 g of 78% polyoxyethylene dodecyl ether (Surfactant WK, product of Kao Corporation) was slowly added while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, and air-dried to obtain 494 g of fine particles obtained by sieving 0.1 to 0.3 mm particles.

(Formulation Example 11) Preparation of Methosulfuron Methyl 0.008% Cinmethylin 0.7% Fine Granules 483.1 g of fine silicalite and 72% cinmethylin emulsion (Agold emulsion, product of BASF Agro Co., Ltd.) 9 g and 2.0 g of metsulfuron methyl 2% solution were charged and mixed for 1 minute while rotating at 350 rpm. Next, 5.0 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 496 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Formulation example 12) Preparation of metsulfuron methyl 0.008% pyraflufenethyl% fine granule 483.0 g of fine silicalite, 2.0 g of metsulfuronmethyl 2% solution and pyraflufenethyl 2% water in a stirring tank of Mechanomyl 2.5 g of a preservative (Eco Part Floorable, Nippon Agricultural Chemicals Co., Ltd.) was charged and mixed for 1 minute while rotating at 350 rpm. Next, 7.5 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, air-dried, and 493 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles was obtained.

(Formulation Example 13) Preparation of Methosulfuronmethyl 0.01% Flupropanate Sodium Salt 4.0% Fine Granules 400.5 g of fine zeolite in mechanomil stirring tank and 30% flupropanate sodium salt liquid (Frenoc liquid, stock Company Sankyo Greening Products) 67.0 g and methosulfuron methyl 0.6% solution 8.3 g were charged and mixed for 1 minute while rotating at 350 rpm. Next, 19.2 g of 78% polyoxyethylene dodecyl ether was slowly added while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 496 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Formulation Example 14) Preparation of 0.1% cymethyrin 0.7% fine granule with cyclosulfamuron 477.6 g of fine silica and 4.9 g of symethyline 72% emulsion and cyclosulfamuron 10% solution 5 in a stirring tank of Mechanomyl 0.0 g was charged and mixed for 1 minute while rotating at 350 rpm. Next, 7.5 g of 65% dioctylsulfosuccinate was slowly added while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 496 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

Formulation Example 15 Preparation of Thifensulfuron Methyl 0.04% Cinmethyline 0.7% Fine Granules 483.1 g of fine silicalite and 4.9 g of cinmethyrin 72% emulsion and 75% thifensulfuron methyl hydrated in a stirring tank of Mechanomyl As a 10% suspension of the agent, 2.0 g was charged and mixed for 1 minute while rotating at 350 rpm. Next, 5.0 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 496 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Formulation Example 16) Preparation of Methosulfuron Methyl 0.008% Glyphosate 1.0% Bromasil 1.0% Fine Granule (A) 459.5 g of fine zeolite and 6.3 g of Bromacil 80% wettable powder in a mechanomill stirring tank Was mixed for 1 minute while rotating at 350 rpm. Next, 12.2 g of a 41% solution of glyphosate isopropylamine and 2.0 g of a 2% solution of metsulfuron methyl were slowly added dropwise and further mixed for 1 minute. Next, 15.0 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 492 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Formulation Example 17) Preparation of Methosulfuron Methyl 0.008% Glyphosate 1.0% Bromasil 1.0% Fine Granule (B) 469.5 g of fine silica stone and 6.3 g of Bromasil 80% wettable powder in a mechano-mill stirring tank Was mixed for 1 minute while rotating at 350 rpm. Next, 12.2 g of a 41% solution of glyphosate isopropylamine and 2.0 g of a 2% solution of metsulfuron methyl were slowly added dropwise and further mixed for 1 minute. Next, 5.0 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, and air-dried to obtain 494 g of fine particles obtained by sieving 0.1 to 0.3 mm particles.

(Formulation example 18) Preparation of metsulfuron methyl 0.008% glufosinate 0.8% bromacil 1.0% fine granule 454.7 g of fine zeolite and 6.3 g of bromacil 80% wettable powder were charged in a stirring tank of mechanomyl. The mixture was mixed for 1 minute while rotating at 350 rpm. Next, 22.0 g of glufosinate 18.5% solution (Buster solution, product of Bayer Crop Science Co., Ltd.) and 2.0 g of metsulfuron methyl 2% solution were slowly added dropwise and further mixed for 1 minute. Next, 10.0 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, air-dried, and 493 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles was obtained.

(Formulation Example 19) Preparation of metsulfuron methyl 0.008% glyphosate 1.0% diuron 2.0% fine granule 453.1 g of fine zeolite and 12.7 g of diuron 78.5% wettable powder were added to the stirring tank of Mechanomyl. The mixture was charged and mixed for 1 minute while rotating at 350 rpm. Next, 12.2 g of a 41% solution of glyphosate isopropylamine and 2.0 g of a 2% solution of metsulfuron methyl were slowly added dropwise and further mixed for 1 minute. Next, 15.0 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 492 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Preparation Example 20) Preparation of metsulfuron methyl 0.008% glyphosate 1.0% cymethyline 0.7% fine granule 470.9 g of fine silicalite and 4.9 g of symethyline 72% wettable powder were charged in a stirring tank of Mechanomyl. The mixture was mixed for 1 minute while rotating at 350 rpm. Next, 12.2 g of a 41% solution of glyphosate isopropylamine and 2.0 g of a 2% solution of metsulfuron methyl were slowly added dropwise and further mixed for 1 minute. Next, 5.0 g of 65% dioctylsulfosuccinate was slowly added while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 492 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Formulation Example 21) Preparation of metsulfuron methyl 0.008% glyphosate 2.0% pendimethalin 1.2% fine granules 440.4 g of fine zeolite and 45% pendimethalin wettable powder (way) Upflowable, product of BASF Agro Co., Ltd.) 13.3 g, glyphosate isopropylamine 41% solution 24.3 g and metsulfuron methyl 2% solution 2.0 g were charged and mixed for 1 minute while rotating at 350 rpm. Next, 15.0 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 492 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Formulation Example 22) Preparation of metsulfuron methyl 0.008% bromacil 1.0% pyraflufenethyl 0.01% fine granule 476.7 g of fine silica stone and 6.3 g of bromacil 80% wettable powder in a stirring tank of Mechanomyl Was mixed for 1 minute while rotating at 350 rpm. Next, 2.0 g of metsulfuron methyl 2% solution and 2.5 g of pyraflufenethyl 2% wettable powder were slowly added dropwise and further mixed for 1 minute. Next, 7.5 g of Neoscore 2339 was added slowly while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 492 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

(Formulation example 23) Preparation of metsulfuron methyl 0.005% diuron 1.5% cymethyline 0.5% fine granule In a stirring tank of Mechanomyl, 475.6 g of fine silica and 9.6 g of diuron 78.5% wettable powder and Cinmethylin 72% wettable powder 3.5 g was charged and mixed for 1 minute while rotating at 350 rpm. Next, 1.3 g of metsulfuron methyl 2% solution was slowly added dropwise and mixed for another 1 minute. Next, 5.0 g of Neoscore 2339 was slowly added while rotating at 400 rpm. Subsequently, 5.0 g of porous silicic acid was added, taken out after stirring for 1 minute, taken out and air-dried to obtain 492 g of a fine granule obtained by sieving 0.1 to 0.3 mm particles.

  The herbicidal effects of the above Formulation Examples 1 to 23 and the control drug on plants were compared in pots and fields.

(Herbicidal Effect Test Example 1) Pot Test A fine granule was sprayed on onomami, millet, and beans with a height of about 10 cm, which were cured in a 200 cm ² pot. A glyphosate 2.0% fine granule used as a control drug was prepared according to Formulation Example 16. The herbicidal effect was evaluated by the degree of response to the drug after 3 days, 1 week, 2 weeks and 3 weeks after treatment. The test was conducted on April 23, 2004 as two repeats of each agent. The average value of the results is shown in Table 1.

  As is clear from Table 1, the fine granule according to the present invention can increase the effect on onamomi, mackerel, and swine beans more quickly and over a long period of time than the conventional fine granule.

(Weeding effect test example 2) Field test The field in Shimobeppu district, Tsukuba City, Ibaraki Prefecture, where 10-40 cm tall Shiroza, leafhopper, Japanese bark, Japanese beetle, etc. are generated is divided into 1.0 mx 1.5 m in 1 ward. Sprayed with fine granules and commercially available control drug. The doses of commercially available control drugs, herbal extermination granules (cyanazine 1.0%, diuron 3.0%, diclobenil 1.5% mixed granule, Sumika Takeda Horticultural Co., Ltd. products) are within the registration range It was. The herbicidal effect was evaluated by the degree of reaction to the drug after 3 days, 1 week, 2 weeks, 4 weeks, and 6 weeks after treatment. The test was conducted on May 28, 2004 as 2 repetitions of each agent. The average value of the results is shown in Table 2.

(Weeding effect test example 3) Field test A field in Shimobeppu district, Tsukuba city, Ibaraki prefecture, where 5-20 cm tall Shiroza, Dutch sand minnow, Nazuna, Jacobe, Japanese barnyard beetle, etc. are generated. And was sprayed with fine granules, commercially available control drugs, and herbicide granules. The dosage of the marketed control drug was within the registration range. The herbicidal effect was evaluated by the degree of reaction to the drug after 3 days, 1 week, 2 weeks, 4 weeks, and 6 weeks after treatment. The test was conducted on May 12, 2004 as 2 repeats of each agent.
The average value of the results is shown in Table 3.

  As shown in Table 3, the preparations 8, 17, 18, and 22 according to the present invention, that is, the fine granules are more effective than white herbicide granules, etc. It is clear that there is.

(Herbicidal effect test example 4) Field test Farming in the Shimobeppu district, Tsukuba city, Ibaraki prefecture, where Shiroza, Dutch minnagus, Nazuna, Jacobe, Suzumenoteppo, Nominofusuma, etc., with a height of about 5 to 20 cm, is generated. .5 m, fine granules, comparative control granules and commercially available control drugs, catolone granules 2.5 (dicrobenyl 2.5% granules, Hokuko Chemical Co., Ltd.), zytron granules (Triclopyr (ISO name trichopyr) 3 0.0% fine granule, Hodogaya Agros Co., Ltd. product) was sprayed. The comparative granule was prepared according to Formulation Example 11 using silica sand (silica sand V3, product of Mikawa Silica Co., Ltd.) having a particle size of 0.6 to 1.7 mm. The dosage of the marketed control drug was within the registration range. The herbicidal effect was evaluated by the degree of reaction to the drug after 3 days, 1 week, 2 weeks, 4 weeks, and 6 weeks after treatment. The test was conducted on April 23, 2004 as two repeats of each agent. The average value of the results is shown in Table 4.

  As shown in Table 4, it is clear that Formulation Examples 10, 11, 19, 20, and 21 according to the present invention are more effective than conventional granules and fine granules.

(Weeding effect test example 5) Field test A grass field of about 5 cm in height, about 3 cm wide grass weeds, nominofuma, 3 cm wide leaf weeds, and the wheat field in Kanzaki-gun, Saga Prefecture is divided into 2.0 mx 2.5 m Sprayed with fine granules and commercially available control drug. Market control drug, Harmony 75DF wettable powder (Thifensulfuron methyl 75% granule wettable powder, DuPont Co., Ltd. product) Harmony fine granule F (Tifensulfuron methyl 0.15% powder, Maruwa Biochemical Co., Ltd. product) ), Clear Turn Fine Granule F (thioben curve (ISO name thiobencarb) 8.0%, pendimethalin 0.8%, linuron (ISO name linuron) 1.2% mixed granule, product of Kumiai Chemical Co., Ltd.) The dose was within the registration range. The herbicidal effect was evaluated by the degree of response to the drug 24 days after treatment and 53 days later. The test was conducted on December 27, 2003 as 2 repeats of each agent. The average value of the results is shown in Table 5.

  As is apparent from the above test, the content of the components can be reduced by using fine granules, and a more rapid and stable effect can be confirmed.

(Weeding effect test example 6) Field test A field in Shimobeppu district, Tsukuba city, Ibaraki, where cedar, mosquito, tade, and shiroza with a plant height of about 10 cm are generated is divided into 1.0 mx 1.5 m in 1 ward, A commercial control drug was sprayed. Commercially available control drug, xanon V granule (diuron 4.0%, dalapon (generic name: dalapon) 10.0%, mecoprop (ISO name mecoprop) 4.0% mixed granule, Sumika Takeda Horticultural Co., Ltd.), cat sogi The dosage of Ace A granules (isouron 1.0%, diuron 6.0%, diclobenil 3.0% mixed granules, products of Rainbow Chemical Co., Ltd.) was within the registration range. The herbicidal effect was evaluated by the degree of reaction to the drug after 3 days, 1 week, 2 weeks, 4 weeks, and 6 weeks after treatment. The test was conducted on July 13, 2004 as 2 repeats for each agent. The average value of the results is shown in Table 6.

(Example 7 of herbicidal effect test) Field test The field in Shisui-cho, Inba-gun, Chiba Prefecture, where the plant is about 10-20cm in height, such as Shiroza, Nazuna, Ragweed, etc., is divided into 1.0m x 1.5m in 1 ward and divided into fine granules And a commercial control drug was sprayed. The doses of the commercially available control drug, Dyrone fine granules (Diuron 3.0% fine granules, Sumika Takeda Horticultural Co., Ltd.) and herbicide granules were within the registration range. The herbicidal effect was evaluated by the degree of reaction to the drug after 3 days, 1 week, 2 weeks, 4 weeks, and 6 weeks after treatment. The test was conducted on June 3, 2003 as two repeats for each agent. The average value of the results is shown in Table 7.

(Weeding effect test example 8) Field test A pine forest in Ina-cho, Tsukuba-gun, Ibaraki Prefecture, where 5 to 10 cm tall Sasa, 40 cm Susuki, 10 to 20 cm snake strawberry, mugwort, black-tailed hawk, swordfish, etc. Were divided into 1.0 m × 1.0 m, and fine granules, comparative fine granules, commercially available control drugs, and Frenoc solution (flupropanate sodium salt 30% solution, Sankyo Greening Co., Ltd.) were sprayed. The dosage of the marketed control drug was within the registration range. A comparative fine granule was prepared according to Formulation Example 13 using silica sand (silica sand V5, product of Mikawa Silica Co., Ltd.) having a particle size of 0.3 to 0.85 mm as a carrier. The herbicidal effect was evaluated by the degree of reaction to the drug after 1 month, 4 months, 6 months, and 8 months after treatment. The test was conducted on October 21, 2003 as one repetition of each agent. The average value of the results is shown in Table 8.

(Example 9 of herbicidal effect test) Field test A field in Shimo-Beppu district, Tsukuba city, Ibaraki prefecture, where cypress bark of about 20-50cm in height, Shiroza of about 10-30cm, Sugina of about 5-20cm, purslane, chickweed, etc. are generated. Divided into 1 section 1.0m x 1.0m, fine granules and commercially available control drugs, Hiber X granules 1.5 (Bromasil 1.5% granules, Maruwa Biochemical Co., Ltd. products), Nekosogiace granules (Isouron 1 0.0%, diuron 6.0%, chlorthiamid (generic name: chlorthiamid) 3.0% mixed granule, Hodogaya Chemical Co., Ltd. product) was sprayed. The dosage of the marketed control drug was within the registration range. The herbicidal effect was evaluated by the degree of response to the drug after 1 week, 2 weeks, 4 weeks and 6 weeks of treatment. The test was conducted on August 4, 2003 as 2 repeats for each agent. The average value of the results is shown in Table 9.

  As is clear from Test Example 9, compared to Herbicidal Effect Test Example 1, by reducing the amount of treatment, plant death was observed immediately after spraying, but thereafter the growth of grass weeds was suppressed for a long period of time. Was confirmed.

  As is clear from the above test examples, the acetolactate synthesis inhibitor (ALSI agent) is attached to or impregnated into fine minerals together with water-soluble high-boiling organic substances, so that it can be used as a fine granule for herbicidal or growth suppression. Made possible.

Claims (9)

  A fine herbicide in which an acetolactate synthesis inhibitor is adhered to a mineral carrier having a particle size of 0.1 mm to 0.3 mm. Iodosulfuron methyl sodium salt (ISO name iodosulfuron-methyl-sodium), cyclosulfamuron (ISO name cyclosulfururon), trifloxysulfuron sodium salt (ISO name trifloxysulfuron-sodium), and acetolactate synthesis inhibitors A herbicidal granule prepared by adhering at least one compound selected from (ISO name metsulfuron-methyl) to silica stone having a particle diameter of 0.1 mm to 0.3 mm or zeolite .   The acetolactate synthesis inhibitor according to claim 1 or 2 is mixed with glyphosate (ISO name: glyphosate) or glufosinate (ISO name: glucosinate-ammonium) as an amino acid herbicide (group A), and the particle size is 0.1 mm. A herbicidal granule attached to a mineral carrier of ~ 0.3 mm.   The acetolactate synthesis inhibitor according to claim 1 or 2, wherein the photosynthesis inhibiting herbicide (group B) is isouron (ISO name isouron), carbutylate (ISO name karbutilate), cyananadine (ISO name cyanazine), diuron (ISO). Name diuron), terbacil (ISO name terbacil), tebuthiuron (ISO name tebuthiuron), bromacil (ISO name bromacil), metribuzin (ISO name metribuzin), and a particle size of 0.1 mm to A herbicidal granule adhered to a 0.3 mm mineral carrier.   The acetolactate synthesis inhibitor according to claim 1 or 2, as a halogenoacetamide herbicide (group C), alachlor (ISO name alachlor), dimethenamide (ISO name dimethylenamide), tenyl chlor (ISO name tenylchlor), butachlor 1 type selected from (ISO name butachlor), pretilachlor (ISO name pretilachlor), and metolachlor (ISO name metochlor) were mixed and adhered to a mineral carrier having a particle size of 0.1 mm to 0.3 mm. A fine herbicide.   The acetolactate synthesis inhibitor according to claim 1 or 2, the dinitroaniline herbicide (group D), pendimethalin (ISO name pendimethalin), trifluralin (ISO name trifluralin), prodiamine (ISO name prodiamine). A herbicidal granule prepared by mixing one selected from benfuralin (ISO name befluralin) and adhering it to a mineral carrier having a particle size of 0.1 mm to 0.3 mm.   The acetolactate synthesis inhibitor according to claim 1 or 2, wherein the protoporphyrinogen oxidase-inhibiting herbicide (group E) is oxadialgyl (ISO name oxadiargyl) or pyraflufenethyl (ISO name pyraflufen-ethyl). A herbicidal granule prepared by mixing one selected from the above and adhering to a mineral carrier having a particle size of 0.1 mm to 0.3 mm.   The acetolactate synthesis inhibitor according to claim 1 or 2, as other herbicides (Group F) cinmethylin (ISO name cinmethyl), ashram (ISO name asuram), flupropanate sodium salt (ISO name flupropanate-sodium) 1) selected from the above, and a fine particle for herbicidal particles adhered to a mineral carrier having a particle size of 0.1 mm to 0.3 mm. The acetolactate synthesis inhibitor according to claim 1 or 2, the amino acid herbicide according to claim 3 (group A), the photosynthesis inhibition herbicide according to claim 4 (group B), or the halogeno according to claim 5. An acetamide herbicide (Group C), a dinitroaniline herbicide according to Claim 6 (Group D), a protoporphyrinogen oxidase-inhibiting herbicide (Group E) according to Claim 7 , and another according to Claim 8 A herbicidal granule prepared by mixing one type selected from two groups of herbicides (Group F) and adhering to a mineral carrier having a particle size of 0.1 mm to 0.3 mm.