JP6608851B2 - Water-floating large pesticide granular composition and method for producing the same - Google Patents

Description

  The present invention relates to a water surface-floating large pesticide granular composition, and more specifically, for example, by spraying a small amount directly on the water surface of a paddy field or the like, the water surface floating large size capable of uniformly diffusing pesticide active ingredients. The present invention relates to an agrochemical granular composition and a method for producing the same.

  Conventionally, agrochemical compositions used in paddy fields and the like are generally granules, powders, emulsions, wettable powders, and flowables. Of these agrochemical compositions, granules and powders have usually been sprayed directly without diluting 3-4 kg per 10a, but in recent years there has been a call for labor saving in pesticide spraying. Therefore, it is possible to reduce the spraying amount as a pesticide composition by increasing the content of the pesticide active ingredient in the pesticide composition, or to spray it by simply throwing it from the shore without entering the paddy field. Things are sought.

  Various labor-saving pesticide compositions have been studied for such demands, and the technology has been disclosed. However, for example, Patent Document 1 contains an agrochemical active ingredient, Disclosed is a water surface-floating large granular agrochemical composition characterized by having a particle size distribution of 80% or more of particles having a particle size of 3 mm or more and a property of floating on the water surface, and disintegrating on the water surface within 30 minutes. Yes. The agrochemical composition has a high self-diffusibility, and since the agrochemical active ingredient is uniformly distributed throughout the paddy field by directly spraying a small amount of the agrochemical composition of about 250 to 500 g per 10 a paddy field, It can be thrown in and can be said to be an ideal pesticide composition for labor saving application.

  By the way, the water-floating large-sized granule agrochemical composition is designed so that the amount of the composition dropped per unit area is small, thereby reducing the spraying labor and achieving labor saving. In order to drop the same amount of pesticidal active ingredient as conventional granules, it is necessary to mix the pesticidal active ingredient in a high concentration in the pesticidal composition. It is necessary to set it as the agrochemical composition which mix | blended the quantity of the agrochemical active ingredient equivalent to 4 to 12 times with respect to the conventional granule which mix | blended the component.

  On the other hand, the agrochemical active ingredient as an industrial raw material is not necessarily handled alone, and may be distributed in the form of a hydrated product in which water is mixed with the agrochemical active ingredient, for example. Furthermore, the manufacturer of the agrochemical composition itself may mix the obtained agrochemical active ingredient with water to produce an intermediate product of the hydrated product depending on the manufacturing needs. The circumstances when adding water to the agrochemical active ingredient intended by the manufacturer of the agrochemical active ingredient or the agrochemical composition will be described later, but in any case, the water surface floating large-sized granule agrochemical composition is used in the production process. Since the step of uniformly mixing the pesticidal active ingredient and other auxiliary materials is included, when the pesticidal active ingredient is a hydrated substance, water is mixed into the mixture in the mixing step. Moreover, also about auxiliary materials other than an agrochemical active ingredient, if a water-containing raw material is used, the situation where water mixes in a mixture in the said mixing step is the same.

  In general, in the production process of granules by extrusion granulation, a predetermined amount of water is added to the raw material mixture for the purpose of kneading the raw material mixture before granulation. The amount of water added at that time is usually about 10 to 15 parts by weight with respect to 100 parts by weight of the raw material mixture, although it depends on the composition of the raw material mixture. Therefore, in the case of the conventional granule, even if some water derived from the hydrated product of the pesticidal active ingredient is mixed, there is no problem if the blending ratio of the pesticidal active ingredient is low. However, in the water-floating large-sized granule pesticide composition, the blending ratio of the pesticidal active ingredient is increased as described above, so that a large amount of water is mixed with it, which may hinder subsequent processes and product quality. . Specifically, if there is an excess of water in the raw material mixture before granulation, the raw material mixture becomes agglomerated and granulation becomes difficult, the granulated material becomes extremely soft and cannot maintain its shape, and the surface is sticky. There were problems such as the bonded granulated materials joined together and agglomerated, and it took a long time to dry. When water was extremely excessive, the raw material mixture became mud and granulation was impossible. Moreover, since kneading | mixing of a raw material mixture progressed too much, a granulated material became compact and the bad influence appeared also in the floating property, disintegration property, and specific gravity of a water surface floating large-sized granule agricultural chemical composition.

  As a method for solving the above problems, means for blending water-absorbing substances such as diatomaceous earth and white carbon in the raw material mixture are known. On the other hand, these substances are contained in the water-floating large-sized granular agricultural chemical composition. When present in excess, the agrochemical composition becomes brittle and has problems such as being easily pulverized.

JP 2002-179507 A

  An object of the present invention is to provide a water-floating large-sized granular agricultural chemical composition having a good quality and a method for producing the same in a water-floating large-sized granular agricultural chemical composition containing a water-containing raw material.

  As a result of intensive studies, the present inventors have found that a water-floating large-sized granular agricultural chemical composition containing a polysaccharide having specific properties can solve the above-mentioned problems, and have completed the present invention.

  That is, the present invention has the following contents.

(1) 1 or 2 or more agricultural chemical active ingredients, a poorly water-soluble polysaccharide having water retention and suppressed swelling in water, a surfactant, a hollow body, a solid carrier, and water An agrochemical granular composition obtained by extruding and granulating a water-containing mixture that is contained, and then drying to remove moisture, wherein 80% or more of the particles have a particle size of 3 mm or more An agrochemical granular composition having a particle size distribution and a property of floating on the water surface and disintegrating on the water surface within 30 minutes.

(2) With respect to 100 parts by weight of the pesticidal granular composition, 0.1 to 65 parts by weight of the pesticidal active ingredient, 3 to 30 parts by weight of water retention, and poorly water-soluble with suppressed swelling in water The polysaccharide comprising 0.5 to 15 parts by weight of a surfactant, 0.1 to 15 parts by weight of a hollow body, and 0.1 to 96.2 parts by weight of a solid carrier, The agrochemical granular composition as described in 1).

(3) The agrochemical granular composition according to (1) or (2), wherein the particle size of at least one agrochemical active ingredient is 0.1 to 6 μm.

(4) The agrochemical granular composition according to any one of (1) to (3), wherein at least one agrochemical active ingredient is wet-ground.

(5) The agrochemical granular composition according to (1) or (2), wherein at least one agrochemical active ingredient is microencapsulated.

(6) The poorly water-soluble polysaccharide having water retention and suppressed swelling in water is a crosslinked starch obtained by crosslinking the molecular structure of starch, according to any one of (1) to (5) above. Agrochemical granular composition.

(7) The agrochemical granular composition according to (6), wherein the cross-linked starch is phosphoric acid cross-linked starch.

(8) One or more pesticidal active ingredients, a poorly water-soluble polysaccharide having water retention and suppressed swelling in water, a surfactant, a hollow body, a solid carrier, and water After extruding and granulating the water-containing mixture, it is dried to remove moisture, and has a particle size distribution of 80% or more having a particle size of 3 mm or more and a property of floating on the water surface And the manufacturing method of the agrochemical granular composition which disintegrates on the water surface within 30 minutes.

(9) 0.1 to 65 parts by weight of an agrochemical active ingredient, 3 to 30 parts by weight of a water-insoluble polysaccharide having water retention and suppressed swelling in water, and 0.5 to 15 parts by weight 100 parts by weight of an aqueous mixture containing 0.1 to 15 parts by weight of a hollow body, 0.1 to 96.2 parts by weight of a solid support, and a predetermined amount of water And then drying to remove moisture, the method for producing an agrochemical granular composition according to (8) above.

(10) The method for producing a granular composition of an agrochemical according to (8) or (9), wherein at least one agrochemical active ingredient is used for production in the form of an aqueous suspension.

(11) The (8) or (9), wherein at least one pesticidal active ingredient is microencapsulated, and the microcapsules of the pesticidal active ingredient are provided in the form of an aqueous suspension. A method for producing a granular composition of an agricultural chemical.

(12) The method for producing an agrochemical granular composition according to any one of (8) to (11), wherein water is 20 parts by weight or more with respect to 100 parts by weight of the total component excluding water in the water-containing mixture. .

(13) The poorly water-soluble polysaccharide having water retention and suppressed swelling in water is a crosslinked starch obtained by crosslinking the molecular structure of starch, according to any one of (8) to (12) above. A method for producing a pesticide granular composition.

(14) The manufacturing method of the agrochemical granular composition as described in said (13) whose crosslinked starch is phosphate crosslinked starch.

  The water surface floating large granular pesticide composition of the present invention is excellent in water surface floating property and disintegration property, and can diffuse the agricultural chemical active ingredient uniformly through the water surface.

  Moreover, the water surface floating large granular agrochemical composition of this invention can be manufactured also on the manufacturing conditions which mix | blended the water-containing raw material.

  In this specification, when handling the weight of each raw material that is a component of the water surface floating large granular pesticide composition or the water surface floating large granular pesticide composition, unless otherwise specified, "weight" and "parts by weight" In the water-floating large granular agrochemical composition, water in each raw material and in the water-containing mixture is not included in the calculation, that is, represents a weight and a part by weight as a dry weight. Furthermore, in the present specification, when handling the particle size and particle size distribution of the water-floating large-sized granular agricultural chemical composition, “short diameter” means the length of a short part in the shape of the granule, "" Means the particle size obtained by a sieving method using a sieve with a predetermined opening, and "particle size distribution" means the cumulative weight percentage of the given particle size range obtained by the sieving method, When dealing with the particle size and particle size distribution of individual components including components, “particle size” means the volume average particle size obtained by the laser diffraction method, and “particle size distribution” is a predetermined value obtained by the laser diffraction method. The cumulative weight percentage of the particle size range.

  The water-floating large-sized granular agricultural chemical composition of the present invention comprises one or more agricultural chemical active ingredients, a poorly water-soluble polysaccharide having water retention and suppressed swelling in water, a surfactant, and a hollow An agrochemical granular composition obtained by extruding and granulating a water-containing mixture containing a body, a solid carrier, and water, and then drying to remove moisture. % Particle size distribution and a property of floating on the water surface, and it is characterized by collapsing on the water surface within 30 minutes.

  The agrochemical active ingredient that can be used in the water-floating large granular pesticide composition of the present invention is not particularly limited, and may be solid or liquid at room temperature. Although the agrochemical active ingredient which can be used for this invention is listed below, it is not limited to these.

[Herbicidal active ingredient]
Ioxynil, aclonifen, acrolein, azaphenidin, aciflufen-sodium, azisulfuron, ceram, ceram, ceram ), Anilofos, amicarbazone, amidosulfuron, amitrol, aminocyclopyrchlor, aminopyralido-mepropromethyla hyl), ametrin, alachlor, alloxydim, isouron, isoxachlortole, isoxaflutole, isoxaben, isopren, protrone Ipfencarbazone, imazaquin, imazapic (including salts with amines, etc.), imazapyr (including salts such as isopropylamine), imazametabenz (lmazameth) imazamox), imazetapyr (imazethap) r), imazosulfuron, indaziflam, indanophan, eglinazine-ethyl, efrocarb, ethamesulfuron, ethamesulfuron, ethamesulfuron ethidimuron, ethoxysulfuron, ethoxyphen-ethyl, etofumesate, etozanzanid, endothal-disodium, oxadiax zon), oxadiaargyl, oxadichromefone, oxyfluorfen, oryzalin, orthosulfamurone, enbencarb, orfencarb (orbencarb) -Ethyl), carbbutrate, carbetamide, quizalofop-ethyl, quizalofop-P-ethyl, quizalofop-p-tefrill Quinoclamine, quinclorac, quinmerac, cumyluron, clacyfos, glyphosate (sodium, potassium, ammonium, amine, propylamine, isopropylamine, dimethylamine or trimesium ), Glufosinate (including salts such as amines or sodium), cletodim, clodinafop-propargyl, clopyralid, clomazone, floth , Chromeprop ( lomeprop, chloranthram-methyi, chloramben, chloridazon, chlorimuron-ethyl, chlorsulfuron, chlorthal dimethyl, chlorthal dimethyl ), Chlorphthalim, chlorflurenol-methyl, chlorpropham, chlorbromuron, chloroxuron, chlorotoluuron , Saflufenacil, cyanazine, cyanamide, diuron, diethyl-ethyl, dicamba (amine, diethylamine, isopropylamine, sodium or diglycolamine, sodium or diglycolamine) ), Cycloate, cycloxydim, dicloslam, cyclosulfamuron, cyclopyrimorate, diclobenil, dicyclop-P methyl), Dicrohop Mechi (Diclofo-methyl), dichlorprop, dichlorprop-P, diquat, dithiopyr, siduron, dinitramine-cidone Ethyl), Sinosulfuron, Dinoterb, Cyhalofop-butyl, Diphenamide, Difenzoquat, Diflufenicol, Diflufenicol, Diflufenicol Dimetaclaw (Dimethachlor), dimetamethrin (dimethamemid), dimethenamide (dimethenamid), dimethenamide P (dimetenamid-P), simethrin (s), dimepiperate (di), thurine (me). (Sulcotrione), sulfentrazone, cetoxydim, terbacil, daimuron, dalapon, thiazopyr, thiafenacyl, thiafenacil arbzone (including sodium salts, methyl esters, etc.), thiocarbazil, thiobencarb, thidiazimin, thifensulfuron-methyl, desmedifetmedesmetephem , Tenylchlor, tebutam, tebuthiuron, teplaloxidim, tefuryltrione, tembotrione, terbutyrazine, terbutyrazine ), Terbumeton, topramezone, tralcoxydim, triaziflam, triasulfuron, triamon, triamon, trialumine. , Triclopyr-butotyl, tritosulfuron, triflusulfuron-methyl, trifluralin, trifloxysulfuron sodium salt dium), tribenuron-methyl, naptalam (including salts with sodium, etc.), naproanilide, napropamide, neburon (n), norflurazon (n), norflurazon (n) ), Paraquat dichloride, haloxifene-methyl, haloxyhop, haloxyhop-P, haloxyhop-ethylthiol, haloxyhop-ethulyl Picloram picloram, picolinafen, bicyclopyrone, bispyribac-sodium, pinoxaden, bifenox, piperophoryl, piperophoryl , Pyrasulfotole, pyrazoxifene, pyrazolynate, bilanafos, pyraflufen-ethyl, pyridafol (salt), pyriforol, salt yrithiobac-sodium, pyridate, pyriftalid, pyributicalcarb, pyribenzoxim, pyrimisulfoyl, pylimisulfoyl pyroxulam, phenisopham, phenuron, fenoxasulfone, fenoxaprop-P-ethyl, fenquinotrione, fenquinotriop Fenthiaprop-ethyl, fentrazamide, fenmedifam, foramsulfuron, butachlor, butafenatel, butamifate, butamifate , Butralin, butroxydim, flazasulfuron, flampprop (including methyl, ethyl, isopropyl ester), flampprop-M (methyl, ethyl, isopropyl ester) including), Fluazifop-butyl, fluazifop-P-butyl, fluazolate, fluometuron, fluorglycofen-l, fluzolene salt, flucarbone sodium salt ), Flucetosulfuron, fluthiacet-methyl, flupyrsulfuron-methyl-sodium, flufenacet, flufenpyr-ethyl. Flupropanate, flupoxame, flumioxazin, flumicrolac-pentyl, flumetsuram, fluridone, flurtamone, flurtamone Lochloridone, pretilachlor, procarbazone sodium salt, prodiamine, prosulfocarb, propaquafoproprol opachlor, propazine, propanil, propyzamide, propisochlor, propyrisulfuron, prophazol, profluzol, profluzol, profluzol, profluzol, profluzol (Propoxycarbazone-sodium), proxoxydim, bromacil, brompyrazon, promethrin, promethon, bromoxynyl bromoxynyl ester, bromoxynyl ester , Lomophenoxime, bromobutide, florasulam, petoxamide, benzazoline, benzoline, pentosulam Bencarbazone, pendimethalin, benzfendizone, benzulide, bensulfuron-methyl, benzobicyclone (benzobiclone) Benzofenap, bentazone, pentanochlor, pentoxazone, benfluralin, benfurestate, fosamine, fosamine, fosamine, fosamine, fosamine , Potassium, isopropylamine, triethanolamine, dimethylamine, etc.), mecoprop-P. Potassium salt (mecoprop-P), mesosulfuron-methyl, mesotrione, metazachlor , Metazosulfuron (met azosulfuron, metabenzthiazuron, metamitron (methamitron), methizoline (methizotron), methyldimethuron (methytron) methobenzuron, metolachlor, metribuzin, mefenacet, monolinuron, molinate, iodosulfuron, iodosulfuron methyl Sodium salt (iodosulfuron-methyl-sodium), iofensulfuron, iofensulfuron-sodium salt, lactofen, linuron, 2, 6-lenacil Trichlorobenzoic acid (2,3,6-TBA), 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), 2,4-dichlorophenoxyacetic acid (2,4-D) (amine, diethylamine) , Triethanolamine, isopropylamine, including salts such as sodium or lithium), 4- (2,4-dichlorophenoxy) butyric acid (2,4-DB), AE-F-150944 (code number), 4,6 -Ginito -O-cresol (DNOC) (including salts such as amine or sodium), S-methyldipropylthiocarbamate (EPTC), 2-methyl-4-chlorophenoxyacetic acid (MCPA), MCPA-thioethyl (MCPA-thioethyl) 2-methyl-4-chlorophenoxybutyric acid (MCPB) (including sodium salt, ethyl ester, etc.), SL-573 (code number), SYP-298 (code number), SYP-300 (code number), S- Metrachlor, 2,2,2-trichloroacetic acid (TCA) (including salts such as sodium, calcium or ammonia).

[Insecticide active ingredient]
Acrinathrin, Azadirachtin, Azamethiphos, Azinphos-ethyl, Azinphos-methyl, Acequinocylole (Acephate), azocyclotin, abamectin, afidopyropen, amidoflumet, amitraz, alanib, alicalb, aldib Aldoxycarb, allethrin [including d-cis-trans-form, d-trans-form], isazophos, isamidofos, isocarbophos, isoxathion, isoxathion, isoxathion -Methyl), isoprocarb, isopropyl O- (methoxyaminothiofophoryl) salicylate (isopropyl O- (phenylaminothiophosphoryl) salicylate), ivermectin (ive), imidiaphos (imidaphos), imidiaphos (imidaphos) Protoline (imiprothrin), indoxacarb (esdoxacarb), esfenvalerate (ethfenvalerate), etiofencarb (ethionfencarb), ethion (ethiprole), ethylene dibromide (ethylenefenetrox) (Etofenprox), ethoprophos, etrimfos, emamectin benzoate, endosulfan, empentrin, oxamyl, oxydimone, oxydimone methen-methyl, oxydeprofos, ometoate, kazusafos, karandajin, cartap, carbaryl, carbofuran, gammafuran (carbosulfan) -BHC (gamma-BHC), xylylcarb, quinalphos, quinoprene, chinomethionate, coumaphos, cryolite, crotanidin (c), crotanidin (c) , Chromafenozide, chlorantaniprolol, chlorethoxyphos, chlordane, chloropyrin, chloropyrfoline , Chlorfenvinphos, chlorfluazuron, chlormephos, cyanophos, diafenthiuron, diamidaphos os), cyantraniliprole, dienochlor, cienopyrafen, dioxabenfos, diphenolan, cyclanidiprole, cyclandiliprole ), Cycloprothrin, dichlorvos, 1,3-dichloropropene, dicofol, dicyclanil, disulfoton, dinotefuran (dinotefuran) tefuran, dinobuton, cyhalothrin [including gamma-form, lambda-form], cyphenothrin [including (1R) -trans-form], cyfluthrin-form Diflubenzuron, cyflumetofen, diflovidazine, cyhexatin, cypermethrin [alpha-, beta-, eta-, zeta-, zeta-, zeta-, zeta-, zeta-, beta-, z Phosphine (dimethylvinphos), dimefluthrin, dimethoate (Dimethoate), silafluofen, cyromazine, spinetoram, spinosad, spirodiclofen, spiroterumofen, spirotetramofre, spirotetrafram ), Sulfluramide, sulfoxafluor, sulfotep, diazinon, thiacloprid, thiamethoxam, thioxadithio thiodiccarb, thiocyclam, thiosultap, thionazine, thiophanox, thiomethon, tetrachlorvinphos, tetradifluon, tetradiphone , Tetramethrin, tebupyrimfos, tebufenozide, tebufenpyrad, tefluthrin, teflubenzuron, teflubenzuron eton-S-methyl, temefos, deltamethrin, terbufos, tralomethrin, transfluthrin, triazatrifone, triazotrifone, triazotrifone (Triflumuron), triflumezopyrim (triflumezopyrim), trimetacarb, tolfenpyrad, nared, nitenpyram, novaluron, novaluron on), Verticillium lecanii, hydroprene, Pasteuria penetrance, bamidithion, parathion, parathion-phenth (Halfenprox), halofenozide, bioallethrin, bioarethrin S-cyclopentenyl, bioresmethrin, biostrmethrin ethylnon, bifenazate, bifenthrin, piflubumide, piperonyl butoxide, pymetrozine, pymetrozine, pymetrozine. , Pyridalyl, pyrifluquinazone, pyriprole, pyriproxyfen, pirimicarb, pyrimidifene, pirimidifen Pyriminostrobin, pirimiphos-methyl, pyrethrin, famfur, fipronil, fenazaquin, fenamifos, fenamifos (f) Phenothiocarb, phenothrin [including (1R) -trans-form], fenobucarb, fenthion, fentoate, fenvalerate, fenpyroxime Fenpyroximate, fenbutatin oxide, fenpropathrin, phonofos, sulfuryl fluoride, butocarboximbu (Buprofezin), furathiocarb, praletrin, fluacrypyrim, fluazuron, fluensulfone, fluoroacetate salt, orodium fluate Ron (flucylxuron), flucytrinate (flusulfuraide), flusulfamide (fluufurafurefure) ), Flufenoxystrobin, flufenoxuron, flubendiamide, flumethrin, protrifenbute, prothiophosfoprofidomid (Flonicamid), propaphos, propargite, profenofos, profluthrin,
Propetamphos, propoxur, flometoquin, bromopropylate, hexathiazox, hexemesi, p Heptafluthrin, heptenophos, permethrin, benclothiaz, bensultap, benzoximate, Daniocarb, Benfuracarb, Beauveria tenella, Beauveria onti, Hoste, Boberia bronati, Beauveria (Fosthietan), phosphamidon, phosmet, polynactin complex (polynactins), formatenate, formate, malathion, milbemectin (milb) emethin, mecarbam, mesulfenfos, methomyl, metaflumizone, methamidothio, metathiathio, methiocarb, methiocarb, methiocarb , Methyl bromide, methoxychlor, methoxyphenozide, methotrin, methofluthrin, methoprene etolcarb, mevinphos, meperfluthrin, monacrosporium phymatophagum, monocrotophos (monocrotophos), mommofluor-little, ), Aluminum phosphide, zinc phosphide, hydrogen phosphine, lufenuron, rescalure, resmethrin, repimectin (rotiminton) one), fenbutatin oxide, calcium cyanide, nicotine-sulfate, (Z) -11-tetradecenyl = acetate, (Z) -11-hexadecenal, (Z) -11-hexadecenyl = Acetate, (Z) -9,12-tetradecadienyl acetate, (Z) -9-tetradecen-1-ol, (Z, E) -9,11-tetradecadienyl acetate, (Z, E) -9,12-tetradecadienyl acetate, Bacillus popilie, Bacillus subtilis, Bacillus sphaericus, Bacillus schiericus -Lingensis, subspecies, Izawai (Bacillus thuringiensis subsp. Aisawais), Bacillus thuringiensis suburis ur sir sul s. Bacillus thuringiensis subsp. Tenebrionis, Bt protein (Cry1Ab, Cry1Ac, Cry1Fa, Cry2Ab, mCry3A, Cry3Ab, Cry3Ab, Cry3Ab, Cry3Ab, Cry3Ab, Cry3Ab, Cry3Ab, Cry3Ab, Cry3Ab, Cry7Ab Number), bis- (2-chloro-1-methylethyl) ether (DCIP), 1,1,1-trichloro-2,2-bis (4-chlorophenyl) ethane (DDT), dimethyl-2,2, 2-trichloro-1-hydroxyethylphosphonate (DEP), 4,6-dinitro-O-cresol (DNOC), O, O-diethyl-O- [4- (dimethylsulfamoyl) phenyl] -phosphorothionate (DSP), ethyl-P-nitrophenylthionobenzenephosphonate (EPN), NA-85 (code number), NA-89 (code number), NC-515 (code number), RU15525 (code number), ZDI- 2501 (code number), XMC (XMC), Z-13-icosen-10-one, ZXI8901 (code number), ME5382.

[Bactericidal active ingredient]
Azaconazole, acibenzoral S-methyl, azoxystrobin, anilazine, amisulbisoyl, amethoctrazine , Isopyrazam, isofetamid, isoprothiolane, ipconazole, iprodione, iprovalicas, iprobenizar, iprobenfos il), iminoctadine-albesylate, iminoctadate acetate, imibenconazole, ethifenphos, etaconazole, etaconazol, etaconazol. ), Ethoxyquin, etridiazole, enestroburin, enoxastrobin, epoxiconazole, organic oils, oxazixyl xyl), oxazinylazole, oxathiapiproline, oxycarboxin, copper oxyquinoline, oxytetracycline olpoxylate, oxatetrapyroline, oxytetracycline oxacolonzole -Fumarate, oxolinic acid, copper dioctanoate, octilinone, ofurase, orysastrobin, orthophenylphenol (o-phenylphenol), gazomycin (Captafol), carpropamide, carbendazim, carboxin, carbonone, quinoxyphen, quinomethionate, captamine c ), Guazatine, cufraneb, cuboxystrobin, cresoxime-methyl, clozilacon, clothalinil, chlorothalinate ), Chloroneb, cyazofamid, diethofencarb, diclocymet, diclofluanid, dichroanine, dichlorane, dichlorane. Diniconazole, Diniconazole-M, Dineb, dinocap, diphenylamine, difenoconazole, difenzometo sulfate, cyflufenamide, diflumetorim, cyproconazole, cyprodinil, dimethylsulfide, dimethymol, dimethymol ), Dimoxystrobin, ziram, silthiofam, streptomycin, spiroxamine, sedaxane, zoxamide ( zoxamide, dazomet, thiadinyl, thiabendazole, thiuram, thiophanate, thiophanate-methyl, tefluzamide, fluzamide ), Tetraconazole, debacarb, tebuconazole, tebufloquin, terbinafine, dodine, dodemorphol, dodemorphol, dodemorphol adimenol), triadimefon, triazoxide, trichlamide, triclopiriccarb, tricyclolde, triticolazole, triticolazole, triticolazole Roxystrobin, triforine, tolylfluanid, tolclofos-methyl, tornifanide, tolprocarb (narprocarb), tolprocarb (nerva) am), natamycin, naphthifine, nitrapyrin, nitrotal-isopropyl, nuarimol, copper nonylphenol sulphate ) (Strain: QST 713), validamycin, varifenate, picarbutrazox, bixafen, picoxystrobin, bittertanol, bitterol Biryl, biphenyl, piperalin, hymexazole, pyroxystrobin, pyracrostrobin, pyrazophospyrmetrophosine, pyrazophos ), Pyrisoxazole, pyrifenox, pyributicalcarb, pyribencarb, pyrimethanil, pyroquinolin, cloquilonin, cloquilonin, cloquilonin Ferbam, famoxadone, phenazine oxide, phenamidone, fenaminefon, fenoxanil, fenoxanil (Fenpyramine), fenbuconazole, fenfuram, fenpropidin, fenpropimorph, fenhexamid, folpet, Salicide (phthalide), bupirimate, fuberidazole, blastcidin-S (blasticidin-S), furamethpyr (furalaxyl), furalaxyl (furaluminum) Oxastrobin, fluopicolide, fluopyram, fluorimide, fluxapiroxad, fluquinconazole, fluquinconazole, fluquinconazole, fluquinconazole, fluquinconazole, fluquinconazole, fluquinconazole Furconazole-cis, fludioxonil, flusilazole, flusulfamide, flutianil, flutolanoflu, flutriafol, flutriafol (Flumotover), fluromorph, proquinazid, prochloraz, procymidone, prothiocarb, prothioconazole, prothioconazole, prothioconazole l), propamocarb-hydrochloride, propiconazole, propinebyl, probenazole, exonazole, bromconazole, bromoconazole, bromoconazole, bromoconazole. M (benalaxyl-M), benodanyl, benomyl, pefurazoate, penconazole, pencyclon, benzobindifluzole, benzovindiazole Thiavaricarb-isopropyl, pentiopyrad, penflufen, boscalid, fosylol, polyc, oxypyl, polyc mixture, mancozeb, mandipropamide, mandestrobin, manneb, microbutanil, mineral oils, mildiomycin ldiomycin), metasulfocarb, metham, metalaxyl, metalaxyl-M,
Metiram, metconazole, metminostrobin, metraphenone, mepanapirim, meptylino, mepronil, mepronil, mepronil, mepronil, mepronil Phosphorous acid and salts, basic copper chloride, silver, cuprous oxide, copper hydroxide, potassium hydrogen carbonate (potassium hydrogen carbonate) bicarbonate), sodium bicarbonate Sodium bisulfate, sulfur, oxyquinoline sulfate, copper sulfate, (3,4-dichloroisothiazol-5-yl) methyl 4- (tert-butyl) benzoate (Chemical name, CAS registry number: 1231214-23-5), 3-((3,4-dichloroisothiazol-5-yl) methoxy) benzo [d] isothiazole-1,1-dioxide (Chemical name, CAS Registration number: 957144-77-3), BAF-045 (code number), BAG-010 (code number), bisethylenediamine copper complex salt of dodecylbenzenesulfonate [II] (DBEDC), triphenyltin acetate (TPTA), tri Phenyltin chloride ( PTC), triphenyltin hydroxide (TPTH), MIF-1002 (code number).

[Plant growth regulating active ingredient]
1-methylcyclopropene, 1-naphthylacetamide, 2,6-diisopropylnaphthalene, 4-CPA (4-CPA), benzylaminopurine , Ancymidol, aviglycine, carbonone, chlormequat, cloprop, cloxyphonac, cloxiphonac potassium salt cyclanilide), cytokinin (c tokinins, daminozide, dikeglac, dimethipine, ethephon, epocholeone, eflutol, fluremol, influpriol Forchlorfenuron, gibberellin acid, inabenfide, indole acetic acid, indole butyric acid, maleic hydrazide zide), mefluidide, mepiquat chloride, decyl alcohol (n-decanol), paclobutrazol, prohexadione-calcium, prohydroonmon , Sintofen, thidiazuron, triacontanol, trinexapac-ethyl, uniconazole, uniconazole-P (uniconazole-P) or 4-oxo-P 2-Phenylethyl) aminobutyric acid (chemical name) CAS Registry Number: 1083-55-2).

  As the above-mentioned pesticidal active ingredient, a pure product or a raw material may be used as it is, but a pure product or a raw material of the pesticidal active ingredient may be mixed with a solid or liquid auxiliary material in advance. Furthermore, the pesticidal active ingredient may be used as a hydrated product previously mixed with water, and the present invention is particularly useful when the pesticidal active ingredient is used in the form of a hydrated product.

  Specifically, the water-containing product in which the pesticidal active ingredient is mixed with water in advance is an aqueous solution in which the water-soluble pesticidal active ingredient is dissolved in water. Further, there may be a form such as an aqueous emulsion obtained by emulsifying a water-insoluble agrochemical active ingredient that is liquid at room temperature in water. The reason for processing and handling pesticidal active ingredients in the form of hydrated substances is that they are difficult to handle due to their physical properties, such as pure products of pesticidal active ingredients, so they are soluble or emulsified in water. Alternatively, in the case of an aqueous emulsion or for the purpose of adjusting the dissolution rate, the pesticidal activity obtained by adding water to wet pulverize the pesticidal active ingredient to a particle size of about 0.1 to 6 μm. When the aqueous suspension of the component is handled as a raw material as it is, when the agricultural chemical active ingredient is microencapsulated in water by a desired method, and the resulting microcapsule dispersion of the agricultural chemical active ingredient is directly used as the raw material, In order to handle a pesticide active ingredient having dust explosiveness safely, there may be a case where the pesticide active ingredient is dissolved or dispersed in water, but it is not particularly limited. No. In addition, a known substance can be arbitrarily used as an auxiliary material to be a film material of the microcapsule. Moreover, a well-known means can be arbitrarily applied as a manufacturing method of the said microcapsule. In addition, in addition to the agrochemical active ingredient and water, in addition to the agrochemical active ingredient and water described above, auxiliary agents such as a dispersant, an emulsifier, a thickener, an antiseptic, an antifoaming agent, and an antifreeze agent are optionally added As long as the final product is not adversely affected, it may be optionally blended.

  The agrochemical active ingredients can be used alone or in admixture of two or more. Moreover, the sum total of the mixture ratio of these agrochemical active ingredients is 0.1-65 weight part normally with respect to 100 weight part of compositions, Preferably it is 0.5-60 weight part, More preferably, it is 1-50. Parts by weight.

  Furthermore, in the water-floating large-sized granular agricultural chemical composition of the present invention, a phytotoxicity reducing compound can be blended together with the above-mentioned agricultural chemical active ingredient. Although the example of the safener compound which can be mix | blended is described below, this invention is not limited to these safener compounds.

[Drug-damaging compounds]
Benoxacor, furilazole, dichlormid, dicyclonone, N1, N2-diallyl-N2-dichloroacetylglycinamide (DKA-24), 4-dichloroacetyl-1-oxa-4-azaspiro [4.5] Decane (AD-67), 2,2-dichloro-N- (1,3-dioxan-2-ylmethyl) -N- (2-propenyl) acetamide (PPG-1292), 3-dichloroacetyl -2,2,5-trimethyl-1,3-oxazolidine (R-29148), croquint set-mexyl, naphthalic anhydride (1,8-Naphthalic Anhydride), mefenpyr-die (Mefenpyr-diethyl), mefenpyr (mefenpyr), mefenpyr-ethyl, fenchlorazole-O-ethyl, fenchlorim, 2-dichloromethyl-2-methyl-1 , 3-dioxane (MG-191), ciomethrinil, flurazole, fluxophenim, isoxadifen, isoxadifen-ethyl, MON4660 tril, MON4660 tril Cyprosulfamide, lower alkyl Ru-substituted benzoic acid, TI-35 (code number) or N- (2-methoxybenzoyl) -4-[(methylaminocarbonyl) amino] benzenesulfonamide (chemical name, CAS registry number: 1295131-12-0).

  The said phytotoxicity reducing compound can be used individually or in mixture of 2 or more types. Moreover, when mix | blending these phytotoxicity reducing compounds, the sum total of the compounding ratio is 0.1-40 weight part normally with respect to 100 weight part of compositions, Preferably it is 0.5-30 weight part, More preferably Is 1 to 25 parts by weight.

  The poorly water-soluble polysaccharides having water retention and suppressed swelling in water that can be used in the water-floating large granular agricultural chemical composition of the present invention are not particularly limited as long as they have the above properties, for example, , Glycogen, cellulose, chitin, agarose, carrageenan, heparin, hyaluronic acid, pectin, xyloglucan and other natural polysaccharides and those that have been chemically treated, acetylated adipic acid crosslinked starch, acetylated phosphate crosslinked starch Starch, acetylated oxidized starch, starch octenyl succinate, starch acetate, oxidized starch, hydroxypropyl starch, hydroxypropylated phosphate cross-linked starch, phosphate monoesterified phosphate cross-linked starch, phosphorylated starch, phosphate cross-linked starch, etc. Processing with chemical treatment Npun can be mentioned. Among these, modified starch is preferable, and among the modified starches, the cross-linked starch obtained by crosslinking the molecular structure of starch has the property that the starch inherently swells in water due to the intramolecular cross-linked structure. It has suitable properties as the polysaccharide used. Specific examples of the crosslinked starch include acetylated adipic acid crosslinked starch, acetylated phosphoric acid crosslinked starch, hydroxypropylated phosphoric acid crosslinked starch, phosphoric acid monoesterified phosphoric acid crosslinked starch, and phosphoric acid crosslinked starch. In particular, phosphate-crosslinked starch is preferred. Although it is a polysaccharide, amylose in starch does not have water retention and is not suitable for use in the present invention, and amylopectin has a strong tendency to swell in water and impairs the physicochemical properties of the agricultural chemical granular composition. Not suitable for use in the present invention.

In addition, about the water retention among the properties of the polysaccharide, for example, those having a water retention of 2 to 20 quantitatively evaluated by the following measurement method are preferable.
3 g of a sample is weighed into a commercially available non-woven pack (tea pack), 400 mL of deionized water is put into a 500 mL beaker, the pack containing the sample is immersed for 10 minutes, then the pack is taken out, and water is placed in the beaker for 1 minute. Cut and weigh, then formula:
Water retention = (weight g after sample immersion-weight g after immersion of pack only) / sample weight g.

In addition, among the properties of the polysaccharide, the property in which swelling in water is suppressed, for example, a swellability quantitatively evaluated by the following measurement method is preferably 35 or less.
Weigh 100 mg of sample into a test tube, add 10 mL of deionized water, disperse the sample well, heat the dispersion at 90 ° C. for 30 minutes, cool in running water for 5 minutes, centrifuge at 3000 rpm for 10 minutes, and supernatant The weight of the starch paste from which the aqueous layer was removed was measured and the following formula:
Swellability = starch paste weight mg / 100mg
Swellability is calculated from

  Furthermore, among the poorly water-soluble properties of the polysaccharides, for example, those having a solubility in distilled water at 20 ° C. of less than 1 ppm are preferable.

  The polysaccharides having the specific properties can be used alone or in admixture of two or more. The total blending ratio of the polysaccharide is usually about 3 to 30 parts by weight, preferably about 3.5 to 20 parts by weight, more preferably 4 to 10 parts by weight with respect to 100 parts by weight of the agricultural chemical composition. is there.

  Moreover, in the water surface floating large granular agrochemical composition of this invention, surfactant is mix | blended in order to disintegrate a grain within 30 minutes on the water surface, and to diffuse an agrochemical active ingredient in water. As the surfactant that can be used, those generally used in agricultural chemical compositions can be used.

  Examples of specific surfactants include polyethylene glycol higher fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene alkyl aryl ethers, polyoxyethylene aryl phenyl ethers, sorbitan monoalkylates, acetylene alcohols and acetylenic diols and their Nonionic surfactants such as alkylene oxide adducts, alkylaryl sulfonates, dialkyl sulfonates, lignin sulfonates, naphthalene sulfonates and their condensates, alkyl sulfates, alkyl phosphates, alkylaryls Sulfate ester salt, alkylaryl phosphate ester salt, polyoxyethylene alkyl ether sulfate ester salt, polyoxyethylene alkyl aryl ether sulfate ester Ether salts, polyoxyethylene aryl phenyl ether sulfuric acid ester salts, anionic surfactants such as polycarboxylic acid type polymeric activator, more silicone surfactants, mention may be made of fluorine-based surfactant. The liquid surfactant may be used by being adsorbed on a solid carrier such as white carbon, diatomaceous earth, urea or sodium sulfate.

  The surfactants can be used alone or in admixture of two or more. Further, the total blending ratio of these surfactants is usually 0.1 to 15 parts by weight, preferably 0.5 to 12.5 parts by weight, more preferably 1 to 10 parts per 100 parts by weight of the composition. Parts by weight.

  It is essential that the water surface floating large granular agricultural chemical composition of the present invention floats on the water surface. Examples of methods for imparting water surface floatability to a water surface floating large granular pesticide composition include pearlite and obsidian pearlite, shirasu foam shirasu, phyllite baked in an aluminosilicate system, sodium silicate or borax. Foamed microballoon, pumice, granular diatomaceous earth, granular activated carbon, wood powder, cork powder, kenaf pieces, phenol microballoon made of phenol resin, ecosphere made of epoxy resin, polyurethane foam made of polyurethane resin, polyacrylonitrile resin Microspheres made of, a method of containing a floating carrier having one or more independent air chambers, such as fly ash produced as ash during thermal power generation, stearic acid and its salts, hydrophobic white carbon, etc. Those who contain water-repellent substances Although the like, and more preferred method of incorporating the floating support having a former independent one or more air chambers and.

  The floating carrier can be used alone or in admixture of two or more. In addition, the amount of these floating carriers is not particularly limited as long as the water-floating large granular agrochemical composition can obtain water surface floating properties, but if it is added more than necessary, it becomes brittle particles and is stored or transported. Since it is not preferable, such as crushing at the time of use or use, or generation of dust increases, it is desirable to add the minimum necessary amount. For this reason, the upper limit of the amount of the floating carrier or the like is generally up to about 30 parts by weight with respect to 100 parts by weight of the composition, preferably less than 20 parts by weight, more preferably less than 15 parts by weight. . Moreover, a minimum is 0.3 weight part and it is preferable that it is 0.5 weight part or more. If the blending ratio is less than 0.3 parts by weight, the composition may not exhibit water surface floatability.

  Moreover, in the water surface floating large granular agrochemical composition of this invention, in order to improve the effect of the above-mentioned floating carrier, it is desirable to contain a trace amount of water in the composition. The amount of water is about 0.3 to 3% by mass, preferably about 0.3 to 1.5% by mass in the composition. When water is 0.3% by mass or less, the structure allows water to easily enter the composition. Therefore, when the composition is poured into water, it floats once on the surface of the water, but then the air inside the composition In some cases, it may fall out and settle, and the above-mentioned floating carrier must be contained more than necessary, which is not preferable. Further, when the water content is 3% by mass or more, it is not preferable because the granular materials may adhere to each other and make it difficult to disperse and the composition becomes brittle and fine powder is generated during the dispersion.

  In the water-floating large-sized granular agricultural chemical composition of the present invention, as a method of containing a predetermined amount of water, there is a method in which the composition is once completely dried and then sprayed and added. The drying may be terminated when the moisture content reaches a predetermined amount. The water content in the water-floating large-sized granular agricultural chemical composition of the present invention can be measured using, for example, a Karl Fischer moisture measuring device or an infrared moisture measuring device.

  Furthermore, in the water surface floating large granular agrochemical composition of this invention, a solid support | carrier is mix | blended. As the solid carrier, a water-soluble carrier or a water-insoluble carrier can be used, and these can be used in combination. Water-soluble carriers include, for example, organic or inorganic acid salts such as ammonium sulfate, ammonium bicarbonate, ammonium nitrate, ammonium chloride, potassium chloride, sodium sulfate, magnesium sulfate, sodium citrate, sodium carbonate, sodium bicarbonate, citric acid, succinic acid Organic acids such as sucrose, saccharides such as lactose, urea and the like. Mineral fine powder is generally used as the water-insoluble carrier, and examples thereof include clays, calcium carbonate, bentonite, talc, diatomaceous earth, calcium stearate, and white carbon.

  The solid carriers can be used alone or in admixture of two or more. Moreover, the sum total of the mixture ratio of these solid support | carriers is 0.1-96.2 weight part normally with respect to 100 weight part of compositions, Preferably it is 10-70 weight part.

  In the water-floating large-sized granular agricultural chemical composition of the present invention, an auxiliary agent is blended as necessary as other components. Examples of the auxiliary agent which is an optional component include a binder, a disintegrant, and an agrochemical active ingredient decomposition inhibitor.

  Specific examples of the binder include carboxymethylcellulose sodium salt, dextrin, water-soluble starch, xanthan gum, guar seed gum, sucrose, polyvinylpyrrolidone, polyvinyl alcohol, sodium polyacrylate, polyethylene glycol having an average molecular weight of 6000 to 20000, average molecular weight Examples include 100,000 to 5,000,000 polyethylene oxide.

  Specific examples of disintegrants include sodium tripolyphosphate, sodium hexametaphosphate, metal stearate, cellulose powder, dextrin, methacrylate copolymer, polyvinylpyrrolidone, polyaminocarboxylic acid chelate compound, sulfonated styrene / isobutylene -Maleic anhydride copolymer, starch-polyacrylonitrile graft copolymer, etc. can be mentioned.

  Specific examples of the decomposition inhibitor include desiccants such as zeolite, quicklime and magnesium oxide, antioxidants such as phenol compounds, amine compounds, sulfur compounds and phosphate compounds, UV absorption of salicylic acid compounds and benzophenone compounds. Agents and the like.

  The adjuvants can be used alone or in admixture of two or more. Moreover, when mix | blending these adjuvants, the sum total of the mixture ratio of an adjuvant is 0.01-10 weight part normally with respect to 100 weight part of compositions, Preferably it is 0.1-6 weight part. .

  Furthermore, in the water-floating large granular agricultural chemical composition of the present invention, an organic solvent may be used when the agricultural chemical active ingredient is dissolved or dispersed. Examples of the organic solvent include dioctyl phthalate, methyl naphthalene, alkyl pyrrolidone, phenylxylyl ethane, glycerin, alkylene glycol, machine oil, methane series hydrocarbon, fatty acid ester, polybasic acid, coconut oil, soybean oil, rapeseed oil. Silicone oil or the like can be used, but a high boiling point solvent is preferable.

  The organic solvents can be used alone or in admixture of two or more. When mix | blending these organic solvents, the sum total of the mixture ratio of an organic solvent is 10-200 weight part normally with respect to 100 weight part of pesticidal active ingredients.

  The water surface floating large granular agricultural chemical composition of the present invention is usually a granular composition floating on the water surface containing the components described above, but each of the aforementioned components and blending amounts has a particle size of 3 mm or more. The composition is adjusted so that it disintegrates within 30 minutes, preferably within 20 minutes, more preferably within 10 to 15 minutes on the water surface. When the time required for disintegration exceeds 30 minutes, the composition is blown by the wind, which is not preferable. In order to further reduce the influence of blowing, each of the above components is adjusted such that when the composition floats on the water surface, the portion exposed on the water surface is 40% or less, preferably 20% or less of the entire composition. Adjust the blending amount.

  As a preferable composition example of the water surface floating large-sized granular agricultural chemical composition of the present invention, for example, an active ingredient having a water surface application effect is contained as a component, the average particle diameter is 3 to 8 mm, and the specific gravity is 0.3 to 1. And those that disintegrate in 1 to 20 minutes after being sprayed on the water surface.

  The water-floating large granular agricultural chemical composition of the present invention comprises one or more agricultural chemical active ingredients described above, a poorly water-soluble polysaccharide having water retention and suppressed swelling in water, and surface activity. After extruding and granulating a water-containing mixture containing an agent, a hollow body, a solid carrier, and water, and blending the above-mentioned components as necessary, it is dried to remove moisture, and by a known method, What is necessary is just to obtain the thing of the particle size distribution whose particle size of 3 mm or more is 80% or more.

  Specifically, in order to obtain the water surface floating large granular agricultural chemical composition of the present invention having the above particle size distribution, the above-mentioned components are mixed, kneaded with a predetermined amount of water, and the opening diameter is 3 to 10 mm, preferably Extrusion granulation with an extrusion granulator such as a front-press granulator equipped with a 3 to 8 mm screen, sizing and drying, and if necessary, two sieves with different openings, for example, an opening What is necessary is just to take out the said granular material using a 3 mm and 10 mm sieve.

  As described above, it is essential that the water-floating large-sized granular agricultural chemical preparation of the present invention contains more particles having a particle size of 3 mm or more, that is, has a particle size distribution in which particles having a particle size of 3 mm or more are 80% or more. It is a requirement, and more preferably, particles having a particle size of 3 to 10 mm are 80% or more, and more preferably particles of 3 to 8 mm are 80% or more. Even if the water-floating large-sized granular agricultural chemical preparation of the present invention is sprayed from the shore by setting the particle size distribution as described above, the spray area is 5 to 50% of the total paddy area at a distance of 1 m or more from the shore. Can be easily obtained. As a secondary effect of making the particle size 3 mm or more, misuse can be prevented because it can be easily discriminated from a granule for paddy rice seedling box containing many particles having a normal particle size of about 0.8 mm. Can be mentioned. Even if a misuse is noticed after treating the paddy rice seedling box, only the preparation of the present invention floats on the surface of the water by putting the whole seedling box in water, so that the damage of misuse can be minimized.

  The method for spraying the water-floating large-sized granular agricultural chemical composition of the present invention described above to the surface of water such as paddy fields is not particularly limited. For example, a method of holding and throwing the composition with a hand wearing vinyl gloves, power A method of spraying continuously from the jet head using a spreader, or a method of spraying and spraying intermittently by opening and closing the shutter lever instantaneously, a method of throwing using a handle, and a cylindrical container A method of throwing and shaking, a method of using a hand-held type granulator, and a method of spraying in a streak shape or spot using a radio control helicopter.

  Conventionally, in rice cultivation in paddy fields, in the case of so-called early cultivation, the generation of algae in paddy fields is possible even if the surface-floating agricultural chemical composition is locally applied within a period of 1 to 2 weeks after transplanting. There is almost no diffusibility of the pesticidal active ingredient, and the desired effect is obtained. However, in so-called normal season cultivation after May, the water temperature rises, and algae are generally generated at the appropriate time for spraying pesticides. This algae significantly inhibits the spread of pesticide active ingredients. Therefore, the desired effect of the agricultural chemical is often not obtained. In particular, when a surface-floating agricultural chemical composition is locally sprayed on a paddy field where algae are blown by the wind, the portion where the algae is blown hardly obtains the effect of the agricultural chemical. In addition, even when a rice-floating pesticide composition is locally sprayed after several weeks after transplantation, the growth of paddy rice progresses and the strain grows, diffusion of the pesticide active ingredient is hindered. Thus, the labor-saving spraying composition on which local spraying is a premise was a composition sprayed when rice plants are small.

  On the other hand, the water-floating large granular pesticide composition of the present invention has good diffusion of agrochemical active ingredients in paddy fields where algae are generated or in rice fields where rice plants have grown to some extent. It can be said that it is a water-floating granular pesticide composition that is effective, and by spraying this to a specific position in a paddy field and within a specific area, the pesticide hardly interferes with labor saving at the time of spraying the pesticide. The active ingredient can be uniformly dispersed. That is, the diffusive granular composition having a particle diameter of 3 mm or more according to the present invention is 80% or more, floats on the water surface, and disintegrates on the water surface within 30 minutes. By spraying at a distance of 5 to 50% of the total paddy area, preferably 10 to 50%, at a distance of 2 m or more from the shore, it is uniformly distributed in the paddy field. Can be sprayed.

  In addition, although there is no problem even if the water surface floating large granular pesticide composition of the present invention is sprayed on 50% or more of the total paddy field area, it is meaningless for the purpose of labor-saving pesticide spraying, and is 50% or less. It is desirable to spread over the area. Furthermore, naturally, even in paddy fields where no algae are generated, paddy fields before transplantation, and paddy fields with small rice stocks, the diffusion of agricultural chemical active ingredients by the water-floating large-sized granular agricultural chemical composition of the present invention is good. The effect of the agricultural chemical of the season is obtained.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not restrict | limited at all by these Examples. In the following examples, parts represent parts by weight.

Example 1
10 parts of pyrimisulphan, 3 parts of sodium alkylnaphthalene sulfonate, 1 part of polyvinyl alcohol, 0.3 part of xanthan gum and 85.7 parts of water were mixed and wet-ground using a bead mill to prepare pyrimisulfan (average particle size 6 μm ) Was obtained. 20 parts of this pyrimisulfan slurry (2 parts as pyrimisulfan, 2.9 parts as solids, 17.1 parts as water), phosphate cross-linked starch (water retention 10, swellability 20, 20 ° C to distilled water) 5 parts of sodium balloon sulfonate formalin condensate, 2.5 parts of sodium polyacrylate, 14 parts of 85% hydrated plastic balloon with a polyacrylonitrile copolymer wall (balloon) 2.1 parts as water, 11.9 parts as water), 5 parts of polypropylene glycol, 20 parts of diatomaceous earth, 5 parts of calcium carbonate and 47.5 parts of clay are mixed and kneaded after adding an appropriate amount of water and kneading. Extrusion granulation from a screen having an opening diameter of 5 mm using a pressing type granulator, and the granulated product is dried at 60 ° C. m) to obtain a pesticidal granular composition minor 5mm containing 2% by weight. The particle size distribution of the agrochemical granular composition was 80% or more when the particle size was 3 mm or more.

Example 2
20 parts of pyrimylsulfuran slurry prepared in Example 1 (2 parts as pyrimisulphan, 2.9 parts as solids, 17.1 parts as water), 12 parts fentolazamide, phosphate-crosslinked starch (water retention 10, swelling) 5% of solubility in distilled water at 20 ° C and 20 ° C), 5 parts of sodium alkylnaphthalene sulfonate, 2.5 parts of sodium polyacrylate, 85% of plastic balloon using polyacrylonitrile copolymer as a wall material Appropriate amount for a mixture containing 12 parts of hydrous material (1.8 parts as a balloon, 10.2 parts as water), 1 part of polyoxyethylene acetylene glycol, 15 parts of diatomaceous earth, 5 parts of bentonite and 49.8 parts of calcium carbonate After adding water and kneading, it is extruded and granulated from a screen with an opening diameter of 5 mm using a front-press type granulator. And dried at 0 ° C., pyridinium miss Le fan (average particle size 6 [mu] m) 2 mass%, to obtain a pesticidal granular composition minor 5mm containing fentrazamide 12 mass%. The particle size distribution of the granular agricultural chemical composition was 80% or more when the particle size was 3 mm or more.

Example 3
20 parts of the pyrimisulphan slurry prepared in Example 1 (2 parts as pyrimisulphan, 2.9 parts as solids, 17.1 parts as water), 6 parts phenoxasulfone, phosphate cross-linked starch (water retention 10 , Swellability, solubility in distilled water of 20 ° C. less than 1 ppm) 5 parts, 5 parts naphthalene sulfonic acid formalin condensate sodium salt, 1 part carboxymethylcellulose sodium salt, plastic balloon with polyacrylonitrile copolymer as wall material 14 parts (2.1 parts as a balloon, 11.9 parts as water), 1 part of polyoxyethylene acetylene glycol, 15 parts of diatomaceous earth, 5 parts of bentonite and 57 parts of clay in an appropriate amount After adding water and kneading, it is extruded and granulated from a screen having an opening diameter of 5 mm using a front-press type granulator, Drying the particle material at 60 ° C., pyridinium miss Le fan (average particle size 6 [mu] m) 2 mass%, to obtain a pesticidal granular composition minor 5mm containing phenoxazine sulfonic 6 wt%. The particle size distribution of the granular agricultural chemical composition was 80% or more when the particle size was 3 mm or more.

Example 4
30 parts phenoxasulfone, 10 parts naphthalenesulfonic acid formalin condensate, 1 part dialkylsulfosuccinate sodium salt, 2 parts polyoxyethylene styrylphenyl ether ammonium sulfate salt, 10 parts propylene glycol, 0.1 part xanthan gum and 46.9 water Parts were mixed and wet pulverized using a bead mill to obtain a slurry containing 30% by mass of phenoxasulfone (average particle size 0.5 μm). 26.7 parts of this phenoxasulfone slurry (8.0 parts as phenoxasulfone, 14.2 parts as solids, 12.5 parts as water), 2 parts pyrimylsulfan, phosphate cross-linked starch (water retention 10, 5 parts of swellability, solubility in distilled water at 20 ° C. of less than 1 ppm), 5 parts of sodium salt of formalin naphthalene sulfonate formalin, 12 parts of 85% hydrated plastic balloon with polyacrylonitrile copolymer wall ( 1.8 parts as a balloon, 10.2 parts as water), 2 parts of polyoxyethylene acetylene glycol, 2 parts of white carbon, 15 parts of diatomaceous earth, 5 parts of bentonite, and 48 parts of clay are mixed with an appropriate amount of water. In addition, after kneading, it is extruded and granulated from a screen having an opening diameter of 5 mm using a front-press type granulator, and the granulated product is dried at 60 ° C. The pyridinium Miss Le fan 2 mass% to obtain a phenoxazine sulfonic pesticidal granular composition minor 5mm containing 8 mass% (average particle size 0.5 [mu] m). The particle size distribution of the granular agricultural chemical composition was 80% or more when the particle size was 3 mm or more.

Example 5
10 parts of the pyrimisulfan slurry prepared in Example 1 (1 part as pyrimisulphan, 1.4 parts as solids, 8.6 parts as water), 10 parts of phenoxasulfone slurry prepared in Example 4 (phenoxy) 3 parts as sasulfone, 5.3 parts as solids, 4.7 parts as water), phosphate-crosslinked starch (water retention 10, swellability 20, solubility in distilled water less than 1 ppm at 20 ° C.) 5 parts, alkyl Naphthalene sulfonic acid formalin condensate sodium salt 10 parts, 85 parts hydrated plastic balloon 15 parts (2.3 parts balloon, 12.7 parts water), polyoxyethylene copolymer wall material, polyoxyethylene An appropriate amount of a mixture of 1 part of acetylene glycol, 2 parts of white carbon, 15 parts of diatomaceous earth, 5 parts of bentonite and 53 parts of clay was mixed. After kneading and extruding from a screen having an opening diameter of 5 mm using a front-press type granulator, the granulated product is dried at 60 ° C., and 1% by mass of pyrimulfan (average particle size 6 μm) is obtained. A pesticidal granular composition having a minor axis of 5 mm containing 3% by mass of phenoxasulfone (average particle size of 0.5 μm) was obtained. The particle size distribution of the granular agricultural chemical composition was 80% or more when the particle size was 3 mm or more.

Example 6
30 parts of pentoxazone, 10 parts of naphthalenesulfonic acid formalin condensate sodium salt, 1 part of dialkylsulfosuccinate sodium salt, 2 parts of polyoxyethylene styrylphenyl ether ammonium sulfate salt, 10 parts of propylene glycol, 0.1 part of xanthan gum and 46.9 water Parts were mixed and wet-pulverized using a bead mill to obtain a slurry containing 30% by mass of pentoxazone (average particle size 1 μm). 26.7 parts of this pentoxazone slurry (8 parts as pentoxazone, 14.2 parts as solids, 12.5 parts as water), 2 parts pyriminoback methyl, 36 parts bromobutide, 2 parts bensulfuron methyl, phosphoric acid 4 parts of crosslinked starch (water retention 10, swelling 20, solubility in distilled water of 20 ° C. less than 1 ppm), 5 parts sodium naphthalene sulfonate formalin condensate, polyacrylonitrile copolymer wall plastic wall Appropriate amount for a mixture containing 12 parts of 85% water content (1.8 parts as a balloon and 10.2 parts as water), 1 part of polyoxyethylene acetylene glycol, 5 parts of bentonite, 5 parts of urea and 24 parts of calcium carbonate. After adding water and kneading, it is extruded and granulated from a screen having an opening diameter of 5 mm using a front-press type granulator, The granule was dried at 60 ° C., and 2% by mass of pentoxazone (average particle size 1 μm), 2% by mass of pyriminobac-methyl, 36% by mass of bromobutide, and 2% by mass of bensulfuron methyl A pesticide granular composition was obtained. The particle size distribution of the granular agricultural chemical composition was 80% or more when the particle size was 3 mm or more.

Comparative Example 1
20 parts of the pyrimisulphan slurry prepared in Example 1 (2 parts as pyrimisulphan, 2.9 parts as solids, 17.1 parts as water), 5 parts of enzyme-modified dextrin (water retention 1, swelling 50, (Solubility in distilled water at 20 ° C. is 1 million ppm or more), naphthalenesulfonic acid formalin condensate sodium salt 10 parts, polyacrylic acid sodium 2.5 parts, 85% of plastic balloon with polyacrylonitrile copolymer as wall material Before kneading a mixture of 14 parts hydrous material (2.1 parts as a balloon, 11.9 parts as water), 5 parts of polypropylene glycol, 20 parts of diatomaceous earth, 5 parts of calcium carbonate, and 47.5 parts of clay. I tried extrusion granulation from a screen with an aperture diameter of 5 mm using a push granulator, but the kneaded product was mud due to excessive moisture, and the granulation itself It was difficult.

Comparative Example 2
26.7 parts of phenoxasulfone slurry prepared in Example 4 (8 parts as phenoxasulfone, 14.2 parts as solid content, 12.5 parts as water), 2 parts of pyrimylsulfan, and formalin condensation of alkylnaphthalenesulfonic acid Sodium salt 5 parts, 12 parts 85% hydrated plastic balloon (1.8 parts balloon, 10.2 parts water), 2 parts polyoxyethylene acetylene glycol, polyacrylonitrile copolymer wall material, A mixture of 10 parts of white carbon, 15 parts of diatomaceous earth, 5 parts of bentonite, and 45 parts of clay is mixed and kneaded with an appropriate amount of water, and then extruded and granulated from a screen with an opening diameter of 5 mm using a push-type granulator. The granulated product was dried at 60 ° C., 2% by mass of pyrimisulphan, phenoxasulfone (average particle size 0.5 μm) To obtain a pesticidal granular composition minor 5mm containing 8 wt%. However, this agrochemical granular composition was brittle and pulverized. The particle size distribution of the granular agricultural chemical composition was 80% or more when the particle size was 3 mm or more.

Test example 1
100 grains of the agricultural chemical granular composition obtained in Examples and Comparative Examples were put into a water tank filled with industrial water at room temperature, and the number of grains that settled was measured. Moreover, the time which the agrochemical granular composition which floated on the water surface required for disintegration was measured. These results are shown in Table 1.

  Each of the agrochemical granular compositions of Examples 1 to 6 had a particle size distribution in which particles having a particle size of 3 mm or more were 80% or more, floated in water and did not settle, and the disintegration time was 10 to 15 minutes. . Therefore, the agrochemical granular composition of Examples 1-6 was excellent in water surface floating property and disintegration property, and was able to diffuse the agrochemical active ingredient uniformly through the water surface. On the other hand, the agrochemical granular composition of Comparative Example 2 has a particle size distribution in which particles having a particle size of 3 mm or more are 80% or more particles having a particle size of 3 mm or more, settles in water, and has a short disintegration time of 1-5 minutes The agrochemical active ingredient could not be uniformly diffused through the water surface.

The water surface floating large granular pesticide composition of the present invention is excellent in water surface floating property and disintegration property, so that the agrochemical active ingredient can be uniformly diffused through the water surface and is suitable for spraying pesticides on the water surface such as paddy fields. Can be used.

that's all

Claims (12)

One or two or more pesticidal active ingredients, a crosslinked starch obtained by crosslinking the molecular structure of starch, which is a poorly water-soluble polysaccharide having water retention and suppressing swelling in water, a surfactant, and a hollow body And a water-containing mixture containing a solid carrier and water (however, starch is used as a microcapsule using a crosslinking agent and a crosslinking reaction catalyst, or starch is used as a foam using a crosslinking agent) (Excluding those contained) is extruded and granulated, dried and removed to remove moisture, and a particle size distribution of 3 mm or more is 80% or more, and floats on the water surface. A pesticide granular composition having properties and disintegrating on the water surface within 30 minutes. Relative to 100 parts by weight of the pesticidal granular composition, the agricultural chemical active ingredient of 0.1 to 65 parts by weight, it has a water retention of from 3 to 30 parts by weight and polysaccharides of low water solubility which puffed is suppressed in water Cross-linked starch obtained by crosslinking the molecular structure of a starch , 0.5 to 15 parts by weight of a surfactant, 0.1 to 15 parts by weight of a hollow body, and 0.1 to 96.2 parts by weight of a solid carrier The agrochemical granular composition according to claim 1, comprising:   The agrochemical granular composition according to claim 1 or 2, wherein the particle size of at least one agrochemical active ingredient is 0.1 to 6 µm.   The agrochemical granular composition according to any one of claims 1 to 3, wherein at least one agrochemical active ingredient is wet-ground.   The agrochemical granular composition according to claim 1 or 2, wherein at least one agrochemical active ingredient is microencapsulated. Crosslinked starch is a phosphate-crosslinked starch, agrochemical granular composition according to claim 1. One or two or more pesticidal active ingredients, a crosslinked starch obtained by crosslinking the molecular structure of starch, which is a poorly water-soluble polysaccharide having water retention and suppressing swelling in water, a surfactant, and a hollow body And a water-containing mixture containing a solid carrier and water (however, starch is used as a microcapsule using a crosslinking agent and a crosslinking reaction catalyst, or starch is used as a foam using a crosslinking agent) Excluding those contained) extruding and granulating, and then drying to remove moisture, and having a particle size distribution of 80% or more with a particle size of 3 mm or more, and a property of floating on the water surface And the manufacturing method of the agrochemical granular composition which disintegrates on the water surface within 30 minutes. 0.1 to 65 parts by weight of an agrochemical active ingredient and 3 to 30 parts by weight of water-retained and water-insoluble polysaccharide, which is a poorly water-soluble polysaccharide that has been subjected to crosslinking treatment. 0.5 to 15 parts by weight of a surfactant, 0.1 to 15 parts by weight of a hollow body, 0.1 to 96.2 parts by weight of a solid carrier, and a predetermined amount of water. Water-containing mixture (excluding those containing starch as a cross-linking agent and microcapsules using a catalyst for cross-linking reaction or those containing starch as a foam using a cross-linking agent) Extruded and granulated 100 parts by weight Then, the method for producing a granular composition for agrochemical according to claim 7 , wherein the moisture is removed by drying. The method for producing a pesticidal granular composition according to claim 7 or 8 , wherein at least one pesticidal active ingredient is provided for production in the form of an aqueous suspension. The agrochemical granule according to any one of claims 7 to 9 , wherein at least one agrochemical active ingredient is microencapsulated, and the microcapsules of the agrochemical active ingredient are used for production in the form of an aqueous suspension. A method for producing the composition. The manufacturing method of the agrochemical granular composition in any one of Claims 7-10 whose water is 20 weight part or more with respect to 100 weight part of the total component except water in the water-containing mixture. The manufacturing method of the agrochemical granular composition of Claim 7 whose crosslinked starch is phosphate crosslinked starch.