JP5708917B2 - Herbicidal composition - Google Patents

Description

  The present invention relates to a herbicidal composition that efficiently controls various harmful weeds by using two known herbicidal active ingredients in combination.

  The overgrowth of weeds causes a decline in agricultural productivity and a deterioration of the living environment, and an effective herbicide is generally used for controlling weeds. In general, it is effective to apply a soil treatment agent before the weeds emergence and after the emergence, a foliar treatment agent is effective, but when there are a wide variety of weeds, the use of glyphosate, bialaphos, glufosinate or their salts is effective. It is particularly effective. However, since these herbicides have a poor soil treatment effect, they cannot be expected to have a significant inhibitory effect on weeds generated after a while. Therefore, mixed use with a chemical having a soil treatment effect is an effective means for imparting residual effect. Flupoxam is used as a turf soil treatment herbicide with residual effect. Known examples of the mixed use include known mixed herbicides of glyphosate or salts thereof, glufosinate or salts thereof, and terbacil, bromacil, metribuzin, bentazone or salts thereof (see Patent Document 1).

JP 2007-22402 A

  An object of the present invention is to kill or suppress weeds by using a drug characterized by a foliage treatment effect and a drug characterized by a soil treatment effect, and the herbicidal composition that maintains the effect over a long period of time. Is to provide things.

  As a result of intensive studies, the present inventors have found that herbicidal compositions containing glyphosate, bialaphos, glufosinate or their salts and flupoxam not only compensate for the disadvantages of using these drugs alone, The present invention was completed by finding out that it exhibits not only the above effect but also an excellent synergistic effect. That is, the present invention relates to a herbicidal composition according to the following [1] and [2] (hereinafter referred to as the present invention composition), and a weeding method according to [3] and [4] (hereinafter referred to as the method of the present invention). .).

  [1] A herbicidal composition containing at least one amino acid herbicidal active ingredient selected from glyphosate, bialaphos, glufosinate and salts thereof and flupoxam.

  [2] The herbicidal composition according to claim 1, wherein the amino acid herbicidal active ingredient is glyphosate or a salt thereof.

  [3] A herbicidal method in which one or more amino acid herbicidal active ingredients selected from glyphosate, bialaphos, glufosinate and salts thereof and flupoxam are separately or simultaneously treated.

  [4] The herbicidal method according to claim 3, wherein the amino acid herbicidal active ingredient is glyphosate or a salt thereof.

  The present invention is not limited to the total effect expected when each active ingredient is used in combination, but exhibits a synergistic herbicidal effect and exhibits an excellent foliage and soil treatment effect.

  Glyphosate, bialaphos and glufosinate are known non-selective herbicides and are generally used in the form of their salts. The glyphosate, bialaphos and glufosinate salts of the present invention are not particularly limited as long as they are organic or inorganic salts and can be used as agricultural chemicals. For example, alkali metals such as sodium salts, potassium salts and lithium salts are used. Examples thereof include alkaline earth metal salts such as salts and calcium salts, ammonium, isopropylamine salts, and trimethylsulfonium salts. Preferred salts are isopropylamine salt, ammonium salt, trimethylsulfonium salt and potassium salt.

  A drug containing glyphosate potassium salt (hereinafter referred to as active ingredient A) is marketed as “Round Up Max Road” (trade name), and a drug containing bialaphos is “Herbie liquid” (trade name). It is commercially available. Moreover, the liquid agent containing glufosinate ammonium salt is marketed as "Buster liquid agent" (brand name), and all can be obtained easily.

  On the other hand, flupoxam is used as a soil treatment agent for turf.

  A drug containing flupoxam (hereinafter referred to as “active ingredient B”) is commercially available as “concrete granule wettable powder” (trade name) and is also readily available.

  The composition of the present invention and the method of the present invention can further use the following active ingredient C in addition to the active ingredient A and the active ingredient B. Further, in the composition of the present invention and the method of the present invention, the following active ingredient C can be used in place of the active ingredient B.

  Active ingredient C: alachlor (alachlor / generic name), ametrine (ametryn / generic name), aminocyclopyracrol (aminocyclapirchlor / generic name), aminopyrlide (aminopropylid / generic name), amiprophosmethyl (generic name) , Anilofos (anifos / generic name), ashram (asulam / generic name), atrazine (atrazine / generic name), azimusulfuron (generic name), bencarbazone (bencarbazone / generic name), bethrosin (benefin / generic name), BenfreSate (generic name), Bensulfuron-methyl (generic name), Ben Thrido (bensulide / generic name), Bentazone (benzonzone / generic name), Bentazone salt, Beniocurb (generic name), Benzobicyclon (generic name), Benzofenap (generic name), Bialaphos (generic name) bialaphos) bicyclopyrone (bicyclopyrone / generic name), bifenox (bifenox / generic name), bispyribac (bispyribac / generic name), bromacil (bromacil / generic name), bromobutide (generic name), butachlor (but) , Butamifos (general name), butenachlor (general name), Cavenstro (Cafenstrole / generic name), carfentrazone-ethyl (carfentrazone-ethyl), chlormethoxynil (generic name), chloridazon (general name), chlorphthalim (general name), chloro IPC (chloroprop) ), TCTP (chlorthal-dimethyl, tetrochlorothiophene / generic name), simmesrin (cinmethylin / generic name), sinosulfuron (cinosulfuron / generic name), clodinahop (clodinafop / generic name), clomazone (cloprone) Clopiralide (clo yrarid / generic name), CNP (generic name), cumylron (cumyluron / generic name), cyanazine (cyanazin / generic name), cyclosulfamuron / generic name, cyhalohop-butyl / generic name ), Dicamba (common name), diclobenil (common name), diflufenican (common name), dimethylpiperate (generic name), dimethametrin (general name), dimethenamide P-dimethenamide (dimethenamide-p / generic name), dithiopyr (dithiopyl / generic name), diuron (diuron) / Generic name), dimron (common name), esprocarb (generic name), etofumesate (ethofumesate / generic name), etozanide (etobzanid / generic name), ethoxysulfuron (generic name), Frazasulfuron (Flazasulfuron / generic name), phenoxaprop-ethyl (fenoxaprop-ethyl / generic name), phenoxasulfone (fenoxasulfone / generic name), fentrazamide (fentrazamide / generic name), florasum (florasulam / generic name), fluazifop butyl / generic name), flukacarbazone-sodium (Generic name), flucetosulfuron (general name), flupoxam (general name), glufosinate (generic name), glyphosate-ammonium salt (generic name), glyphosate isopropylamine salt -Iso-propylamonium / generic name), glyphosate potassium salt (glyphosate-potassium / generic name), glyphosate sodium salt (glyphosate-sodium / generic name), glyphosate-trimesium salt (glyphosate-trimesium / generic name), halothrone halosulfuron-methyl / generic name), hex Sazinone (hexazone / generic name), imazamox (common name), imazapyr (common name), imazaquin (general name), imazaquin (generic name), imadalu (general name) indanofan / generic name, indaziflam (generic name), iodosulfuron methyl sodium salt (iodosulfuron-methyl-sodium / generic name), ioxynyl octanoate / generic name, ipfencarbane (generic name) , Isoproturon (generic name), isouron (isour) n / generic name), isoxaben (common name), isoxaflutol (common name), carbbutylate (generic name), renacil (generic name), linuron (generic name), MCC (Generic name), MCPA (generic name), MCPB (generic name), MCPP (generic name), mefenacet (mefenacet / generic name), mesosulfuron-methyl (generic name), mesotrione (mesotrione / generic name) , Metamihop (metamihop / generic name), metamitron (metamitron / generic name), metazosulfuron (generic name), methiozoline (methiozoline / one name) (Generic name), methyl dimron (generic name), metolachlor (metolachlor / generic name), metribuzin (metribuzin / generic name), metsulfuron methyl (metsulfuron-methyl / generic name), molinate (generic name) , Monosulfuron (monosulfuron / generic name), monosulfuron methyl (monosulfuron-methyl / generic name), naproanilide (naproanilide / generic name), napropamide (genosulfuron / generic name), nicosulfuron (generic name) (Generic name), OK-701 (test name), orthoben curve (orbencarb / generic name) Orthosulfamuron (generic name), oxadialgyl (generic name), oxadiazone (generic name), oxadichromefone (generic name), pendimethalin / general name Name), pentoxazone (pentoxazole / generic name), phenmedifam (phenmedifam / generic name), picolinafene (picolinafene / generic name), pinoxaden (pinoxaden / generic name), pretilachlor (pretilachlor / generic name), prodiamine (prodiamin / prodiamin / (Generic name), promethrin (prometryn / generic name) , Propanil (propanil / generic name), propisochlor (propisochlor / generic name), propoxycarbazone sodium salt (propoxycarbazone-sodium / generic name), propyrisulfuron (generic name), propizamide (propidem) , Pyraclonil (general name), pyrasulfitol (general name), pyrazoline (generic name), pyrazosulfuron-ethyl (generic name), pyrazoxifene (general name), pyrazoxifene (general name) pyribitalcarb / generic name), pyriftalide (pyriphthalid) (Generic name), pyriminobac-methyl (generic name), pyrimisulfan (pyrimisulfan / generic name), pyroxasulfone (pyroxulsulfone / generic name), piroxislam (pyroxulam / generic name), quinclorac / (Generic name), quinoclamine (quinoclamine / generic name), quizalofop-ethyl (common name), saflufenacyl (saflufenacil / generic name), cetoxydim (generic name), ciduron / cidron / generic name (Simazine / generic name), cimetrin (simetrin / generic name), sulfosulfuron / Common name), tebuthiuron (generic name), tefril trione (general name), tembotrione (general name), tepraxidim (general name), terbacil (general name), tetrapion (generic name) tetrapion / fluopropanate / generic name), tenylchlor (tenylchlor / generic name), thiazafluron (general name), thiencarbazone-methyl / generic name, thifensulfuron methyl / thifenthulfuryl-generic name Topramison (generic name), triafamon (triafamo) ne / generic name), triaziflam / generic name, trifloxysulfuron / generic name, trifluralin / generic name, 2,4-PA (generic name), ester of 2,4-PA And a herbicidal active ingredient selected from 2,4-PA salts.

  By using the active ingredient A and the active ingredient C in combination, expansion of the herbicidal spectrum, reduction of the amount of applied medicine, sustained herbicidal effect and the like can be expected.

  The preferred use ratio of the active ingredient A and the active ingredient B in the composition of the present invention and the method of the present invention is usually 0.05 to 20 parts by weight of the active ingredient B relative to 1 part by weight of the active ingredient A, preferably Is 0.1 to 10 parts by weight, more preferably 0.2 to 5 parts by weight.

  The preferred treatment amount of the active ingredient in the composition of the present invention and the method of the present invention depends on the type of plant to be controlled, etc., but usually the active ingredient A is 100-30000 g / ha and the active ingredient B is 10-10000 g / ha. ha, preferably the active ingredient A is 500 to 12000 g / ha, and the active ingredient B is 100 to 5000 g / ha.

The weeds that can be controlled by the composition of the present invention and the method of the present invention are exemplified below. As the weeds mainly occurring in upland fields, orchards and vineyards, representatives are Solanasae weeds, such as Solanum nigrum and Datura stramonium, and Gananium carolinianum. Ganodermae weed, Ibibi (Abutilon theophrasti), and Malvaceae weed represented by Sida spinosa, etc., Ipomoea purpuraeo and Ipomoea purpuraeo. Convolvulaceae weeds represented by the convolvulus (Calistegia spps.), Amaranthus lividus (Amaranthus lividus) and slender amaranth (Amaranthus retroflexus) Amaranthaceae represented by such (Amaranthaceae) weeds, cocklebur (xanthium pensylvanicum), ragweed (Ambrosia artemisiaefolia), sunflower (Helianthus annuus), galinsoga quadriradiata (Galinsoga ciliata), western thorn thistle (Cirsium arvense), Novorogiku (Senecio vulgaris), Himejon (Erigeron annuus) and other species of Compositae weeds, Rupippa indica, Noharagashi (Sinapis v) Weeds represented by (Cruciferae) typified by (Capsella Bursapastoris) and others, Weeds such as Polygonaceae ols (Polygonaceae eus) represented by (Polygonum convolvulus) and ursaceae by cereals (Polygonaceaeol cereals) Cypridaceae (Cenopodiaceae), representatives such as Cheropodiaceum (Chenopodium falifium), Cyppodaceae (Cenopodiaceae) Weeds, Sphaphulariaceae weeds, represented by Veronica persica, etc., Cleminaceae weeds, represented by Commelina communis, etc. Labiabe weeds, Euphorbia supine, Euphorbia maculata and other species such as Euphorbiaceae, and Galium spurk Department (Rubiace ae) Weeds, Violaceae weeds represented by Viola mandhurica, etc., and Vibrioceae (Leus), Lepidoptera (Leus), Lepidoptera (Leus), Lepidoptera (Leus), Lepidoptera (Leus), Lemaceae (Leus) Broad-leaved weeds such as Oxsaldaseae represented by). Wild sorghum (Sorgham dichotomiflorum), Johnson grass (Sorghum halo chilli), Echinochloa cru-galli var. Crus-galli , Barnyard grass (Digitaria ciliaris), oats (Avena fatua), blackgrass (Alopecurus myosuroides), barnyard grass (Eleusine indica), green croaker (Setaria viretis), agronoe ri) and grass weeds (Graminaceous weeds) represented by Alopecurus aegalis, etc., and cyper weeds (Cyprus rotundus, Cyperus esculentus), etc.
Examples of weeds that occur mainly in paddy fields and shores of the paddy field are, for example, the genus Homopteraceae (Potamogetonaceaceae) represented by Potamogeton distinctus and the like; Arismataceae weeds, Leptochloa chinensis, Echinochloa cruzi-galli, Echinoculus oryzicola and Homalochorch Gramineae weeds represented by hum, et al. (Eleocharis kuroguwai), firefly (Sirpus uniponicus), Shirpus nipponicus, Cyperus seropus (Cyperus seropus) Cyperaceae weed, Spirodella polyrhiza, Lemna pauicostata, and so on. ) Weeds, Monochoriati, Wepteraceae (Ezo) trichoderra, Weeds, Ezoe trichondra, etc. (Rothala indica) and other species such as Lythraceaae (Lythraceae), Lidwigia epilobioides (Oenotheraceae) and prunus (Dapatium junceum), Weeds represented by Ila sessilifolia, Lindena pyxidaria, American Azena (Lindernia dubia), and so on. And Compositae weeds represented by Bidens tripartita and the like.
As weeds in non-agricultural lands such as turf, playground, open space, roadside, and track end, in addition to those mentioned above, Poa annua, Taraxacum officinale, Conyza sumatrensis, rape (Cardamine flexuosa), white clover (Trifolium repens), tiger beetle (Hydrocote citrus vio, e.g., planta brei, e.g.

  In using the composition of the present invention as a herbicide, the active ingredient A and the active ingredient B can be used as a mixture as they are, but they are usually mixed with a suitable solid carrier or liquid carrier, and if desired, a surfactant, Add penetrants, spreading agents, thickeners, antifreeze agents, binders, anti-caking agents, disintegrating agents, antifoaming agents, preservatives and anti-decomposition agents, and so on. emulsifiable concentrate, wettable powder, water soluble powder, water dispersible granule, water soluble granule, suspension concentrate, emulsion (Concentrated emulsion), suspoemulsion, microemulsion, dustable powder, granule, tablet, and emulsifiable gel In It can be subjected to practical use. Further, from the viewpoint of labor saving and safety improvement, the preparations of any of the above dosage forms can be provided by being enclosed in a water-soluble package such as a water-soluble capsule and a bag of a water-soluble film.

  Examples of the solid carrier include quartz, calcite, gypsum, dolomite, chalk, kaolinite, pyrophyllite, sericite, halosite, metahalosite, kibushi clay, glazed clay, porcelain stone, siegrite, and allophane. , Shirasu, Kira, Talc, Bentonite, Activated clay, Acid clay, Pumice, Attapulgite, Zeolite and diatomite Baked products such as magnesium carbonate, calcium carbonate, sodium carbonate, sodium bicarbonate, ammonium sulfate, sodium sulfate, magnesium sulfate, diammonium hydrogen phosphate, ammonium dihydrogen phosphate and potassium chloride, such as glucose, fructose , And Sugars such as sugar and lactose, polysaccharides such as starch, powdered cellulose and dextrin, organic materials such as urea, urea derivatives, benzoic acid and benzoic acid salts, such as wood flour, cork flour, corn cobs, walnut shells and Examples include plants such as tobacco stalks, fly ash, white carbon (for example, hydrous synthetic silica, anhydrous synthetic silica, hydrous synthetic silicate, etc.) and fertilizers.

Examples of the liquid carrier, such as xylene, alkyl (C ₉ or C _10, etc.) benzene, phenylxylylethane and alkyl (C ₁ or C _3, etc.) aromatic hydrocarbons such as naphthalene, machine oil, normal paraffin, isoparaffin and Aliphatic hydrocarbons such as naphthene, mixtures of aromatic and aliphatic hydrocarbons such as kerosene, alcohols such as ethanol, isopropanol, cyclohexanol, phenoxyethanol and benzyl alcohol, ethylene glycol, propylene glycol, diethylene glycol, hexylene glycol Polyhydric alcohols such as polyethylene glycol and polypropylene glycol, propyl cellosolve, butyl cellosolve, phenyl cellosolve, propylene glycol monomethyl ether, Ethers such as pyrene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether and propylene glycol monophenyl ether, ketones such as acetophenone, cyclohexanone and γ-butyrolactone, fatty acid methyl esters, dialkyl esters of succinic acid, dialkyl esters of glutamic acid, Esters such as adipic acid dialkyl ester and phthalic acid dialkyl ester, acid amides such as N-alkyl (C ₁ , C ₈ or C ₁₂ ) pyrrolidone, soybean oil, linseed oil, rapeseed oil, coconut oil, cottonseed oil and castor oil Oils and fats, dimethyl sulfoxide and water.

  These solid and liquid carriers may be used alone or in combination of two or more.

  Examples of the surfactant include polyoxyethylene alkyl ether, polyoxyethylene alkyl (mono or di) phenyl ether, polyoxyethylene (mono, di or tri) styryl phenyl ether, polyoxyethylene polyoxypropylene block copolymer, polyoxyethylene Ethylene fatty acid (mono or di) ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, castor oil ethylene oxide adduct, acetylene glycol, acetylene alcohol, ethylene oxide adduct of acetylene glycol, ethylene oxide adduct of acetylene alcohol and alkyl Nonionic surfactants such as glycosides, alkyl sulfate esters, alkylbenzene sulfonates, lignin sulfonates, Killsulfosuccinate, naphthalenesulfonate, alkylnaphthalenesulfonate, salt of formalin condensate of naphthalenesulfonic acid, salt of formalin condensate of alkylnaphthalenesulfonic acid, polyoxyethylene alkyl ether sulfate or phosphate ester salt, polyoxy Ethylene (mono or di) alkyl phenyl ether sulfate or phosphate ester salt, polyoxyethylene (mono, di or tri) styryl phenyl ether sulfate or phosphate ester salt, polycarboxylate (eg polyacrylate, polymaleate and Copolymers of maleic acid and olefins, etc.) and anionic surfactants such as polystyrene sulfonates, cationic surfactants such as alkylamine salts and alkyl quaternary ammonium salts, amino acid types and beties Amphoteric surfactants such as mold, and silicone-based surfactants and fluorinated surfactants.

  The content of these surfactants is not particularly limited, but a range of 0.05 to 20 parts by weight is usually desirable with respect to 100 parts by weight of the preparation of the composition of the present invention. These surfactants may be used alone or in combination of two or more.

  Next, formulation examples of the composition of the present invention will be shown. However, the composition of the present invention is not limited to these. In the following formulation examples, “part” means part by weight, and “active ingredient” is a general term for active ingredient A and active ingredient B.

[Wettable powder]
Active ingredient 0.1-80 parts Solid carrier 5-98.9 parts Surfactant 1-10 parts Others 0-5 parts Others include, for example, anti-caking agents and decomposition inhibitors.

[Milk]
Active ingredient 0.1-30 parts Organic solvent 45-95 parts Surfactant 4.9-30 parts Water 0-50 parts Others 0-10 parts Others include, for example, spreading agents, decomposition inhibitors, and the like.

[Suspension]
Active ingredient 0.1-70 parts Liquid carrier 15-98.89 parts Surfactant 1-12 parts Others 0.01-30 parts Others include, for example, anti-freezing agents, thickeners and the like.

(Granule wettable powder)
Active ingredient 0.1 to 90 parts Solid carrier 0 to 98.9 parts Surfactant 1 to 20 parts Others 0 to 10 parts Others include, for example, binders and decomposition inhibitors.

(Liquid)
Active ingredient 0.01 to 70 parts Liquid carrier 20 to 99.99 parts Others 0 to 10 parts Others include, for example, antifreezing agents and spreading agents.

[Granule]
Active ingredient 0.01-80 parts Solid carrier 10-99.99 parts Others 0-10 parts Others include, for example, binders, decomposition inhibitors and the like.

[Dust]
Active ingredient 0.01 to 30 parts Solid carrier 65 to 99.99 parts Others 0 to 5 parts Other examples include a drift inhibitor and a decomposition inhibitor.

  Next, although the compounding example of this invention composition is shown more concretely, this invention composition is not limited to these.

  In the following formulation examples, “parts” means parts by weight.

[Formulation Example 1] wettable powder active ingredient A 10 parts active ingredient B 10 parts pyrophyllite 74 parts Solpol 5039 4 parts (mixture of nonionic surfactant and anionic surfactant: Toho Chemical Co., Ltd.) Product name)
Carplex # 80D 2 parts (Synthetic hydrous silicic acid: Shionogi & Co., Ltd. trade name)
The above is uniformly mixed and ground to obtain a wettable powder.

[Formulation Example 2] Emulsion active ingredient A 2 parts Active ingredient B 2 parts Xylene 76 parts N-methylpyrrolidone 15 parts Solpol 2680 15 parts (mixture of nonionic surfactant and anionic surfactant: Toho Chemical Industrial product name)
The above is uniformly mixed to obtain an emulsion.

[Composition Example 3] Suspension active ingredient A 10 parts Active ingredient B 10 parts Agrisol S-710 10 parts (Nonionic surfactant: Kao Corporation trade name)
Lnox 1000C 0.5 part (anionic surfactant: Toho Chemical Co., Ltd. trade name)
Xanthan gum 0.2 parts Water 69.3 parts After uniformly mixing the above, wet pulverize to make a suspension.

[Formulation Example 4] Granule wettable powder active ingredient A 40 parts Active ingredient B 40 parts Hytenol NE-15 5 parts (anionic surfactant: trade name of Daiichi Kogyo Seiyaku Co., Ltd.)
Vanillex N 10 parts (anionic surfactant: Nippon Paper Industries Co., Ltd. trade name)
Carplex # 80D 5 parts (Synthetic hydrous silicic acid: Shionogi & Co., Ltd. trade name)
After uniformly mixing and pulverizing the above, a small amount of water is added, stirred and mixed, granulated with an extrusion granulator, and dried to obtain a granulated wettable powder.

[Formulation Example 5] Granule active ingredient A 5 parts Active ingredient B 5 parts Bentonite 30 parts Talc 60 parts And dried into granules.

[Composition Example 6] Powder active ingredient A 2 parts Active ingredient B 2 parts Carplex # 80D 0.5 part (Synthetic hydrous silicic acid: Shionogi Pharmaceutical Co., Ltd. trade name)
Kaolinite 94 parts Diisopropyl phosphate 1.5 parts or more uniformly mixed and pulverized to form a powder.

  In use, each of the above preparations is diluted 1 to 20000 times with water or sprayed as it is without dilution.

  The following test examples show that when the active ingredient A and the active ingredient B are used in combination, an effect that exceeds the effect expected from a single effect is achieved.

  The synergistic herbicidal effect when two kinds of active ingredients are used in combination can be explained as follows. In other words, individual active ingredients often have drawbacks in their herbicidal activity. In this case, the herbicidal activity combining the two active ingredients is a simple sum of the activities of each of the two active ingredients (expectation). This is called synergy when the activity is greater than The activity expected by the combination of the two active ingredients can be calculated as follows (Colby SR, calculation of the synergistic and antagonistic response of the herbicide combination, WEED Vol. 15, 20-22 Vol. (1967)).

C = α + β- (α · β / 100)
α: Inhibition rate when herbicide A is treated in an amount of akg / ha β: Inhibition rate when herbicide B is treated in an amount of bkg / ha C: Herbicide A is akg / ha, herbicide B is Inhibition rate expected when processing at the amount of bkg / ha That is, it can be said that if the actual inhibition rate is larger than the calculated value, it is synergistic, and if it is the same, it is additive.

[Effect test-1]
In a field where the following weeds grew almost uniformly, the drug was diluted with water and uniformly treated with a small spray. 127 days after the drug treatment, the herbicidal effects on various weeds were examined according to the evaluation criteria of 0 = no effect to 100 = complete killing.

  Table 1 shows the herbicidal effect when active ingredient A and active ingredient B are used alone. Table 2 shows the herbicidal effect when active ingredient A and active ingredient B are used in combination.

  In the table, “treatment amount / 10a” means the treatment amount per 10 ares, “gae” means the weight of active ingredient A (glyphosate potassium salt) converted to glyphosate acid, and “gai” means active ingredient B It means the weight of (Fulpoxam). E represents an actual measurement value, and C represents an expected value obtained from the above Colby equation.

Table 1 ――――――――――――――――――――――――――――――――――――
Amount processed / 10a Sparrow's Katavilla American Fluoro ――――――――――――――――――――――――――――――――――――
Active ingredient A 108gae 70 73
Active ingredient B 150gai 0 48
―――――――――――――――――――――――――――――――――――

Table 2 ―――――――――――――――――――――――――――――――――――
Amount of treatment / 10a Sparrow's Katavilla
E C E C
―――――――――――――――――――――――――――――――――――
Active ingredient A + 108gae + 88 70 98 86
Active ingredient B 150gai
―――――――――――――――――――――――――――――――――――

[Effect test-2]
In a field where the following weeds grew almost uniformly, the drug was diluted with water and uniformly treated with a small spray. 138 days after the drug treatment, the herbicidal effect on various weeds was examined according to the criteria of 0 = no effect to 100 = complete withering by observation evaluation.

  Table 3 shows the herbicidal effect when each of active ingredient A and active ingredient B is used alone. Table 4 shows the herbicidal effect when the drugs A and B are used in combination.

Table 3 ―――――――――――――――――――――――――――――――――
Throughput / 10a Dandelion Gigishi ---------------
Active ingredient A 108gae 75 67
Active ingredient B 150gai 0 33
―――――――――――――――――――――――――――――――――

Table 4 ―――――――――――――――――――――――――――――――――
Amount of treatment / 10a Dandelion Gigigishi
E C E C
―――――――――――――――――――――――――――――――――
Active ingredient A + 108gae + 100 75 93 78
Active ingredient B 150gai
―――――――――――――――――――――――――――――――――

As is clear from the above results, the composition of the present invention and the method of the present invention have a synergistic herbicidal effect.

  The composition of the present invention and the method of the present invention can be used for controlling weeds.

Claims (2)

A herbicidal composition containing glyphosate or a salt thereof and flupoxam. A herbicidal method in which glyphosate or a salt thereof and flupoxam are separately or simultaneously treated.