JP2011195477A - Composition and method for controlling undesirable plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composition and a method for controlling undesirable plants for agricultural and non-cultural use, which are capable of reducing burdens on the environment, humans and animals, do not make users uncomfortable by emission of odor etc. upon use and are capable of offering a high controlling effect with an economical amount.SOLUTION: The composition for controlling undesirable plants contains 2-ethyl hexanoic acid and/or 3,5,5-trimethyl hexanoic acid as an active ingredient. Alternatively, the composition for controlling undesirable plants contains as active ingredients: a first ingredient composed of 2-ethyl hexanoic acid and/or 3,5,5-trimethyl hexanoic acid; and a second ingredient that is a chemical herbicide. The method for controlling undesirable plants includes using these compositions.

Description

  INDUSTRIAL APPLICABILITY The present invention reduces the burden on the environment and human livestock, does not give the user a discomfort such as bad odor at the time of use, and can obtain a higher control effect with an economical usage amount. The present invention relates to a control composition and control method for unwanted plants.

  The occurrence of weeds and mosses on agricultural and non-agricultural lands has led to a decline in agricultural productivity and a deterioration of the living environment, and pesticides such as herbicides and growth inhibitors have been widely used as countermeasures. However, excessive use of pesticides, which are artificial chemical substances, is concerned about the burden on the environment, so there is a demand for drugs that are more effective, more economical, and less burdensome on the environment and human livestock. In recent years, with diversification of the needs of pesticide users, low bromide dosage forms and techniques that can be applied without trouble are required.

  Under these circumstances, fatty acid-based herbicides have been widely proposed as pesticides that have low selectivity and can control many weeds. For example, Japanese Patent No. 3021645 (Patent Document 1), Japanese Patent No. 2588350 (Patent Document 2), Japanese Patent Application Laid-Open No. 6-211603 (Patent Document 3), Japanese Patent Application Laid-Open No. 7-215805 (Patent Document 4), JP-A-8-217605 (Patent Document 5), JP-A-2003-342104 (Patent Document 6), Pesticide Biochemistry and Physiology, 80, 151-156 (2004) (Non-Patent Document 1), Weed Technology, 20,410 -415 (2006) (Non-patent document 2), ACS Symposium Series, 947, 174-185 (2007) (Non-patent document 3), mainly caprylic acid, pelargonic acid, capric acid, undecanoic acid, lauric acid, etc. It has been proposed to use fatty acid having 6 to 12 carbon atoms and salts thereof as herbicides. However, these conventional methods contain fatty acids that are also used as food additives as active ingredients, and thus have a strong unpleasant odor, although the burden on the environment and higher animals is reduced. There was a big problem as a feeling of use. In addition, the amount of herbicide used per spray area was relatively large, and there was a problem in economic efficiency. Under such circumstances, it has been desired to develop an effective means for obtaining a higher control effect with a more economical use amount and an agent that takes into account the user such as a less brominated agent.

Japanese Patent No. 3021645 Japanese Patent No. 2588350 Japanese Patent Application Laid-Open No. 6-211603 JP 7-215805 A JP-A-8-217605 JP 2003-342104 A

Pesticide Biochemistry and Physiology, 80, 151-156 (2004) Weed Technology, 20,410-415 (2006) ACS Symposium Series, 947, 174-185 (2007)

  INDUSTRIAL APPLICABILITY The present invention reduces the burden on the environment and human livestock, does not give the user a discomfort such as bad odor at the time of use, and can obtain a higher control effect with an economical usage amount. It is an object of the present invention to provide a control composition and a control method for unwanted plants.

  The present inventors have extensively studied various kinds of plants and drugs for controlling them. As a result, by using relatively safe 2-ethylhexanoic acid and / or 3,5,5-trimethylhexanoic acid, which are used as food additives, as an active ingredient, the burden on the environment and human livestock is reduced and used. A control composition and control method for undesired agricultural and non-agricultural plants that do not give unpleasant odors and other unpleasant feelings to the user and can obtain a higher control effect with economical use It was. Furthermore, surprisingly, when 2-ethylhexanoic acid and / or 3,5,5-trimethylhexanoic acid is used in combination with an existing chemical herbicide, a synergistic effect is observed and the effect is more than normally expected. The present invention was found to be remarkably enhanced, and the present invention was completed.

  As for 2-ethylhexanoic acid and 3,5,5-trimethylhexanoic acid, there has been no knowledge that it has shown a controlling effect on undesired plants such as weeds and moss, and it has not been disclosed in the literature at all. 2-Ethylhexanoic acid and 3,5,5-trimethylhexanoic acid have a particularly high control effect on plants that are not desired among the fatty acids. Further, as will be described later in the Examples, unlike the conventionally proposed fatty acids, there is no unpleasant odor, which is different from the prior art.

That is, the present invention provides the following undesirable plant control compositions and control methods.
(1) An unwanted plant control composition comprising 2-ethylhexanoic acid and / or 3,5,5-trimethylhexanoic acid as an active ingredient.
(2) Control of undesired plants characterized by comprising as an active ingredient a first component comprising 2-ethylhexanoic acid and / or 3,5,5-trimethylhexanoic acid and a second component which is a chemical herbicide Composition.
(3) The second component chemical herbicide comprises glyphosate and its salt, glufosinate, bialaphos, carbylate, pyraflufenethyl, thifensulfuron methyl, pendimethalin, alachlor, MCPP and its salt, sodium chlorate The unwanted plant control composition according to (2), which is one or more herbicide components selected.
(4) A method for controlling undesired plants, wherein an effective amount of the control composition according to any one of (1) to (3) is applied to an undesired plant.

  According to the present invention, by using relatively safe 2-ethylhexanoic acid and / or 3,5,5-trimethylhexanoic acid used as food additives as active ingredients, the burden on the environment and human livestock is reduced, It is possible to obtain an agricultural and non-agricultural undesired plant control composition that does not give the user a discomfort such as a bad odor during use and can obtain a higher control effect with an economical use amount. it can. Furthermore, a synergistic effect is observed in the combined use of an existing chemical herbicide with 2-ethylhexanoic acid and / or 3,5,5-trimethylhexanoic acid, and the effect is remarkably enhanced more than normally expected. .

Commercially available products can be used as 2-ethylhexanoic acid and 3,5,5-trimethylhexanoic acid in the present invention, and they can also be easily prepared from commercially available materials.
When actually preparing an undesired plant control composition in the present invention, it may be used as it is without adding any other components. Usually, however, a solid carrier, a liquid carrier, or a gas carrier is used. Mix, if necessary, add surfactants and other formulation aids, formulate and apply to oils, emulsions, solubilizers, wettable powders, suspensions, flowables, powders, etc. .

These preparations can be formulated as so-called AL agents (applicable liquid agents) or as concentrated preparations that are diluted at the time of processing in the field like general agricultural chemicals. When formulated as an AL agent, the active ingredient (2-ethylhexanoic acid and / or 3,5,5-trimethylhexanoic acid) is usually 0.01 to 90% by mass, preferably 0. 1-10 mass% is contained. When it is set as a concentrated formulation, it is 0.1-90 mass% normally, Preferably it is 1-90 mass%.
2-ethylhexanoic acid and / or 3,5,5-trimethylhexanoic acid can also be used in the form of a cationic salt such as sodium, potassium, calcium and ammonium salts.
Application rate for these formulations, unwanted plants, usually a spray solution 20 to 400 ml / m ^2, the spray solution 50~200ml / m ² are suitably used.

  The chemical herbicide component that is the second component is not particularly limited, but preferably glyphosate and its salt (ammonium salt, isopropylamine salt, potassium salt, sodium salt or trimesium salt), glufosinate, bialaphos, carbylate, pilaf. Ruphenethyl, thifensulfuron methyl, pendimethalin, alachlor, 2- (2-methyl-chlorophenoxy) propionic acid (MCPP) (potassium salt or dimethylamine salt) and its salts, sodium chlorate are preferably used Is done.

  Although the density | concentration in these spray liquids is 0.0001-10 mass% normally, Preferably, it is 0.001-1 mass%. Further, the ratio (mass ratio) of 2-ethylhexanoic acid and / or 3,5,5-trimethylhexanoic acid to the chemical herbicide is usually 99.99: 0.01 to 0.01: 99.99. The ratio is preferably 99.9: 0.1 to 0.1: 99.9.

  The unwanted plant control composition of the present invention may further contain known herbicides to broaden its control spectrum and further increase efficacy. The following are preferably used as examples of such herbicides.

  Ioxynil, aclonifen, aziprotryne, acifluorfen-sodium, azimsulfuron, ashlam, acetochlor, atrazine, Anilofos, azafenidin, amicarbazone, amidosulfuron, amitrole, aminopyralid, amiprophos-methyl, ametryne, alachlor ), Alloxydim, isouron, isoxachlortole, isoxaflutole, isoxaben, isoxaben, isoproturon, imazaquin, imazaquin zapic), imazapyr, imazamethabenz-methyl, imazamox-ammonium, imazethapyr, imazosulfuron, indanofan, eglinazine-ethyl ), Esprocarb, ethalfluralin, ethametsulfuron-methyl, ethidimuron, ethoxysulfuron, ethoxyfen-ethyl, ethofumesate ), Etobenzanid, endothal disodium (endothal), oxadiazon, oxadiargyl, oxaziclomefone, oxasulfuron, oxyfluorfen oxyfluorfen, oryzalin, orthosulfamuron, orthobencarb, oleic acid, cafenstrole, carfentrazone-ethyl, carbetamide , Quizalofop-P-ethyl, quinoclamine, quinclorac, quinmerac, cumyluron, clethodim, clodinafop-propargyl, clopyralid (Clopyralid), clomazone, chlomethoxyfen, clomeprop, cloransulam-methyl, chloramben, chlorimuron-ethyl, chlorthiamid (DCBN), chlorphthal Chlorphthalim, chloroxuron, chlorsulfuron, chlorthal-dimethyl, chlornitrofen, chlorbufam, chlorflurenol-methyl, chlor Propham (chlorpropham), chlorbromuron, chlorotoluron, chloroacetic acid, zantomonas campestris, cyanazine, sodium cyanate, diethyl-ethyl, cycloate (Cycloate), cycloxydim, diclosulam, cyclosulfamuron, dichlorprop, dichlorprop (DBN), dicloofop-methyl, diquat-dibromide ), Dithiopyr, siduron, dinitramine, cinidon-ethyl, cinosulfuron, dinoseb, dinoterb, cyhalofop-butyl , Diphenamid, difenoxuron, difenzoquat, diflufenican, diflufenzopyr, dipropetryn, dimethachlor, dimethamethrin, methamethrin , Simetryne, dimepiperate, dimefuron, simazine, cinmethylin, sulcotrione, sulfentrazone, sulfosulfuron , Sulfometuron-methyl, sethoxydim, terbacil, terbuthylazine, terbutryne, dymron, dazomet, terbumeton, dalapon Thiazafluron, thiazopyr, thiencarbazone, thiocarbazil, thidiazimin, thifensulfuron-methyl, desmedipham, tetrapion, tetrapion ), Tebutam, tebuthiuron, tepraloxydim, tefuryltrione, desmethrin, tembotrione, topramezone , Tralkoxydim, triaziflam, triasulfuron, tri-allate, trietazine, triclopyr, tritosulfuron, triofensulfuron, triflu Triflusulfuron-methyl, trifluralin, trifloxysulfuron-sodium, tribenuron-methyl, drexrela monoceras, naptalam, naproanilide, Napropamide, nicosulfuron, neburon, norflurazon, paraquat-dichloride, haloxyfop, halosafen, halosulfuron Halosulfuron-methyl, bialaphos, picloram, picolinafen, bispyribac-sodium, bispyribac-sodium, pinoxaden, bifenox, piperophos, pyraclonil ), Pyrasulfotole, pyrazoxyfen, pyrazosulfuron-ethyl, pyrazolate, pyrazon, pyraflufen-ethyl, pyridafol, pyrithiobac -Sodium salt (pyrithiobac-sodium), pyridate, pyriphthalide (pyriftalid), pyributicarb, pyribenzoxim, pyrimisulfan, pyriminobac-methyl, pyroxa Sulfone (pyroxasulfone), pyroxsulam, prometryne, fenuron, fenoxaprop-P-ethyl, fenmedipham, fenmedazham, fentrazamide, fosamine-ammonium salt ( fosamine-ammonium, fomesafen, foramsulfuron, butachlor, butafenacil, butamienas, butamifos, butyrate, butenachlor, butenalin, butralin, butroxydim ), Flumetsulam, flazasulfuron, flamprop, primisulfuron-methyl, fluazifop, fluazolate, fluometuron fluometuron, fluoroglycofen-ethyl, flucarbazone-sodium, fluchloralin, flucetosufuron, fluthiacet-methyl, flupirsulfuron-methyl -Sodium salt (flupyrsulfuron-methyl-sodium), flufenacet (fluthiamide), flufenpyr-ethyl, flupoxam, flumioxazin, full microlac-pentyl ( flumiclorac-pentyl, fluridone, flurenol, pretilachlor, proglinazine-ethyl, prodiamine, prosulfuron, propaquizafop, propaclozafop Propachlor, propazine, propanil, propyzamide, propisochlor, propham, propoxydim, profluazol, prosulfocarb ), Propoxycarbazone-sodium salt, bromacil, prometon, bromoxynil, bromofenoxim, bromobutide, florasulam, fluroxypyr , Flurochloridone, flurtamone, hexazinone, benazolin-ethyl, benefin, penoxsulam, beflubutamid, pebulate, Pelargonic acid, vernolate, bencarbazone, benzfendizone, bensulide, bensulfuron-methyl, benzobicyclon, benzophenap ( benzofenap, bentazon, pentanochlor, petoxamide, benthiocarb, pendimethalin, pentoxazone, benfuresate, mesosulfuron-methyl , Mesotrione, metazachlor, metasulfocarb, methabenzthiazuron, metamitron, metamifop, metam, MSMA (methylarsonic acid) Methiozolin, methyldymron, methoxyuron, metsusulam, metsulfuron-methyl, methoprotryne, metobromuron, metobenzuron, metobenzuron, metobenzuron / S-metolachlor, metribuzin, mefenacet, monosulfuron, monolinuron, molinate, iodosulfuron-methyl-sodium, lactofen , Linuron, rimsulfuron, lenacil, DCMU (Diuron), sodium chlorate, 2,3,6-TBA, 2,4,5-T, 2 , 4, -DB, 2,4-PA, DNOC, EPTC, MCPA, MCPB, MDBA, TCA-sodium salt TCA-sodium), hexanoic acid, heptanoic acid, octanoic acid, decanoic acid, undecanoic acid, dodecanoic acid, trimethyl hexanoic acid, cedar essential oil, cedarwood oil, cypress oil, eucalyptus oil, clove oil, citrus oil, lemon oil.

In order to further expand the range of action, other insecticides, fungicides, plant growth regulators, fertilizers, and the like can be mixed.
The herbicidal composition of the present invention may further contain commonly used agricultural chemical adjuvants such as surfactants, extenders, colorants, binders, antifreeze agents, ultraviolet absorbers and the like.

  The surfactant is not particularly limited. For example, phenylphenol sulfonic acid formaldehyde condensate, sodium dioctyl sulfosuccinate, sodium alkyl naphthalene sulfonate, polyoxyethylene alkyl phenyl ether, sodium naphthalene sulfonate condensate, poly Examples include sodium oxyethylene alkyl phenyl ether sulfoacetate, polyoxyethylene alkyl phenyl ether sulfate ammonium, ethylene oxide-propylene oxide copolymer, and alkenyl sulfonate.

  The extender is not particularly limited. For example, vegetable powders such as soybean powder, tobacco powder, wheat flour, and wood powder; clay minerals such as clay, bentonite, acid clay, and radiolite; talc powder Talc such as wax stone powder; mineral powder such as diatomaceous earth and mica powder; sodium bicarbonate, calcium carbonate, alumina, activated carbon and the like.

Although it does not specifically limit as said binder, Carboxymethylcellulose sodium salt, starch, sodium lignin sulfonate, dextrin polyvinyl alcohol, etc. are mentioned.
Although it does not specifically limit as said antifreezing agent, Glycerin, ethylene glycol, propylene glycol etc. are mentioned.

The undesirable plant control composition of the present invention is a solanaceous family represented by Solanum nigrum , Datura stramonium, etc., in any of the soil treatment, soil admixture treatment, and foliage treatment methods. Solanaceae ) Weed, Ichibibi ( Abutilon theophrasti ), Blue-tailed deer ( Sida spinosa ) and other common mallow ( Malvaceae ) weeds, Malagaasagao ( Ipomoea purpurea ) and other morning glory ( Ipomoea spps. ) And convolvulus ( Calystegia spps) .) family Convolvulaceae represented by such (Convolvulaceae) weeds, Amaranthus lividus (Amaranthus lividus), slender amaranth (Amaranthus retroflexus) Amaranthaceae represented by such (Amaranthaceae) weeds, cocklebur (Xanthium pensylvanicum), ragweed (Ambrosia artemisiaefolia), sunflower ( Helianthus annuus ), yellowfin ( Glinsoga ciliata ), Atlantic thistle ( Cirsium arvense) ), Senecio vulgaris (Senecio vulgaris), Asteraceae (Compositae) weeds typified by fleabane (Erigeron annuus), etc., field cress (Rorippa indica), Noharagarashi (Sinapis arvensis), cruciferous represented by a shepherd's purse (Capsella bursapastoris), etc. ( Cruciferae ) Weeds, Polygonum blumei , Polygonum convolvulus, Polygonaceae weeds, Polygaceae weeds, Portulac oleracea, Portulacaceae weeds, Shiroza, Chenopodium album Koakaza (Chenopodium ficifolium), represented by kochia (kochia scoparia) Chenopodiaceae represented by, etc. (Chenopodiaceae) weeds, chickweed (Stellaria media) Caryophyllaceae represented by such (Caryophyllaceae) weeds, persian speedwell (Veronica persica), etc. Scrophulariaceae weed, Commelina communis) commelinaceae represented by such (Commelinaceae) weeds, henbit (Lamium amplexicaule), Lamium purpureum (Lamium purpureum) Labiatae represented by such (Labiatae) weeds, Konishikisou (Euphorbia supina), Euphorbia nutans (Euphorbia maculata), etc. Euphorbiaceae ( Euphorbiaceae ) weeds represented by, Euglebi ( Galium spurium ), Akane ( Rubiaceae ) weeds represented by Rubia akane, Violaceae weeds represented by Viola mandshurica, etc. , the United States horn Aeschynomene indica (Sesbania exaltata), sicklepod (Cassia obtusifolia) legume that typified by (Leguminosae) broad-leaved weeds such as weeds, wild sorghum (Sorgham bicolor), fall panicum (Panicum dichotomiflorum), Johnson grass (sorghum halepense), Inhibibies ( Echinochloa crus - galli var. Crus -galli ) ochloa crus-galli var. praticola) , cultivation Bie (Echinochloa utilis), crabgrass (Digitaria adscendens), oats (Avenafatua), goosegrass (Eleusine indica), green foxtail (Setaria viridis), foxtail (Alopecurus aegualis), annual bluegrass (Poa annua) Gramineae weeds, such as Cyperus rotundus , Cyperus esculentus, Cyperaceae weeds, Anthoceros , and Notothylas , which are represented by Notothylas , takakia lepidozioides Department takakia lepidozioides eyes moss typified by (Takakia), Komachigoke eyes moss typified by Komachigoke Department (Haplomitrium), Sujigoke family (Riccardia), Futamatagoke family (Metzgeria), Mizuzenigoke family (Pellia), Pallavicinia ( Pallavicinia ), Makinosoke ( Makki inoa ), Usabienokei ( Blasia ), Cavicularia ( Cavicularia ), Troubia ( Treubia ), Fossombronia ( Fosombronia ), and others , Ptilidium ( Ptilidium ), Sawaragogi lea ( Tricho ) trichocoleaceae (Trichocolea), Sugibagoke family (Lepidozia), Muchigoke family (Bazzania), Tsukinukigoke family (Calypogeia), Yabanegoke family (Cephalozia), Kuchikigoke family (Odontoschisma), Kamaurokogoke family (Harpanthus), Tosakagoke family (Lophocolea), Fujiurokogoke family (Chiloscyphus), Mizogoke family (Marsupella), Tsubomigoke family (Jungermannia), Hanegoke family (Plagiochila), Oyakogoke family (Schistochila), Hishakugoke family (Scapania), sphagnum beetle family (Pleurozia), Kebiragoke family (Radula), Geberugoke Department ( Goebeliella), Ke Gerigoke Department (Nipponolejeunea), Yasudegoke family (Frullania), Himeurushigoke family (Jubula), jungermanniales moss typified by Kusarigoke Department (Lejeunea), etc., Dangogoke eyes moss typified by Dangogoke Department (Sphaerocarpus), etc., Curiosities liverwort family (Targionia), Saihaigoke family (Asterella), Jingasagoke family (Reboulia), conocephalum conicum family (Conocephalum), lunularia Department (lunularia), Hikari liverwort family (Cyathodium), Ashibutozenigoke family (Clevea), liverwort beetle family (Corsinia) , representative to the liverwort family (Marchantia), Marchantiales moss typified by Kezenigoke Department (Dumortiera), etc., Kazunogoke Department (Riccia), Riccia fluitans eyes moss typified by Ichouukigoke Department (Ricciocarpus), etc., sphagnum Department (sphagnum) is the sphagnum mosses eyes, is represented in andreaeaceae (Andreaea) Kurogoke eyes mosses, Yotsubagoke Department Yotsubagoke eyes Mosses represented by (Tetraphis), Tsuchigoke family (Archidium) typified by Tsuchigoke eyes mosses, Kinshigoke Department (Ditrichum), Ebigoke family (Bryoxiphium), Shippogoke family (Dicranum), Nagadaigoke family (Trematodon), Chiribarigoke family (Campylopus), dicranales mosses represented by Shiragagoke Department (Leucobryum), etc., Houougoke eyes mosses represented by Houougoke Department (Fissidens), Amigoke family (Syrrhopodon), Komusougoke family (Encalypta), Kuchihigegoke family (Trichostomum), Nejikuchigoke family (Barbula), Senbongoke eyes mosses, Giboushigoke family represented by Senbongoke Department (Pottia), etc. (Grimmia), Sunagoke family Giboushigoke eyes mosses represented by (Rhacomitrium), etc., Yoreegoke Department (Discelium) , Kanmurigoke Department (Micromitrium), Leopardidae ( Funaria ), Lepidoptera ( Oedipodium ), Maredigoceae ( Tetraplodon ) and other representatives, Lepidoptera ( Schistostega ), Lepidoptera ( Pohlia ), Gingokeaceae ( Pohlia ) Bryum), Kasagoke family (Rhodobryum), Chouchingoke family (Mnium), Hinokigoke family (Rhizogonium), Tamagoke family (Bartramia), Sawagoke family (Philonotis), Magoke eyes mosses, Tachihidagoke family represented by Kusasugigoke Department (Timmia), etc. ( Orthotrichum), Tachihidagoke eyes mosses, Shibagoke family represented by Minogoke Department (Macromitrium), etc. (Rhacopilum), Shimizugoke family (Fontinalis), Hirono Roh Ganoderma moss family (Climacium), Fujino Ganoderma moss family (Pleurozium), Hijikigoke Department (Hedwigia ), Kawabuchigoke family (Cyptodontopsis), Itachigoke (Leucodon), Risugoke family (Dozya), Mujinagoke family (Trachypus), Himurogoke family (Pterobryum), Haihimogoke family (Meteorium), Hiragoke family (Neckera), representative to the giant Toranoo moss family (Thamnobryum), Toranoogoke family (Dolichomitra), etc. Inumagoke eyes mosses, Aburagoke family to be (Hookeria), Tsugagoke family (Distichophyllum), Kujakugoke family (Hypopterygium), Sotetsugoke family (Cyathophorella) Aburagoke eyes moss that typified by, Higegoke Department (Fauriella), Kogomegoke family (Fabronia), Usugurogoke Department (Leskea), Okamuragoke family (Okamuraea), Shinobugoke family (Thuidium), Miyabegoke family (Miyabea), Himeyanagigoke family (Amblystegium), Hitsujigoke family (Brachythecium), Tsuyagoke family (Entodon), Sanadagoke family (Plagiothecium), Haigoke family ( Hypnum ), Isopteraceae ( Isopter ygium), Futogoke family (Rhytidium), Shitonegoke eyes mosses, Ikubigoke family represented by Hylocomium splendens family (Hylocomium), etc. (Diphyscium), Kumanogoke family (Theriotia), Kiserugoke eyes mosses represented by Kiserugoke Department (Buxbaumia), etc., polytrichum juniperinum For various plants such as cyanobacterium, red algae, brown algae, green algae, bryophytes, algae, etc., represented by the family Polytrichum , Pogonatus , Atrichum , Bartramiopsis , etc. Has high herbicidal power.

  Various conditions such as the amount used (concentration of the herbicide component in the composition, etc.) are appropriately adjusted according to, for example, the type of active ingredient, type of dosage form, target plant, application time, application location, application method, etc. be able to.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to these. In the examples, “%” means “mass%”.

Test Example 1: Sensory test for odors of various fatty acids Hexanoic acid (caproic acid) (Comparative Example 1 compound), heptanoic acid (heptylic acid) (Comparative Example 2 compound), octanoic acid (caprylic acid) (Comparative Example 3 compound), Nonanoic acid (pelargonic acid) (Comparative Example 4 compound), Decanoic acid (Capric acid) (Comparative Example 5 compound), Undecanoic acid (Comparative Example 6 compound), Dodecanoic acid (lauric acid) (Comparative Example 7 compound), 2- A preparation containing 90% ethylhexanoic acid (compound of Example 1) and 3,5,5-trimethylhexanoic acid (Compound of Example 2) and 10% of a surfactant (polyoxyethylene alkyl ether) was prepared. . Each of these preparations was diluted 20 times with water to prepare a spray liquid (the fatty acid concentration of the spray liquid is 4.5%). Each 1 L of these spray solutions was handed to 20 consumers who were arbitrarily extracted, and sprayed on the weeds around each consumer's home at a spray rate of 100 ml / m ² . After that, a questionnaire survey on the herbicidal effect and odor during use was conducted. The results are shown in Table 1. Although the fatty acid of Comparative Examples 1-6 mostly evaluated the high herbicidal effect, in the sensory evaluation of odor, evaluation that most consumers did not want to use was made. On the other hand, for 2-ethylhexanoic acid of Example 1 and 3,5,5-trimethylhexanoic acid of Example 2, most consumers gave a high herbicidal evaluation, and in the sensory evaluation of odor, All consumers evaluated that there was no problem with odor. From the above, the superiority of 2-ethylhexanoic acid and 3,5,5-trimethylhexanoic acid among many fatty acids was proved.

Test example 2: Field foliage treatment pot test (weed emergence high season treatment)
A 350 cm ² plastic pot was filled with field soil, and seeds of Japanese barnyard millet, barnyard grass, dandelion, abalone, shiroza, and giant beetle were sown and covered with about 1 cm of soil. AL formulation containing 2-ethylhexanoic acid, 3,5,5-trimethylhexanoic acid, and pelargonic acid (comparative example) alone 5% and polyvinyl alcohol 0.5% on the 25th day after sowing after water absorption (The remainder is water) was uniformly sprayed at 20 ml, 50 ml, 100 ml, and 200 ml per 1 m ² . The test was carried out in a glass greenhouse at 18 to 30 ° C., and water was absorbed appropriately on the lower surface. The survey was evaluated by observation according to the criteria shown in Table 2 on the third day after the treatment. The results are shown in Table 3.

Test Example 3: Field test of bryophyte foliage treatment (treatment of bryophyte growth period)
A preparation containing 5% 2-ethylhexanoic acid or 3,5,5-trimethylhexanoic acid and 2% emulsifier (sorbitan monolaurate) was prepared. These preparations diluted with stock solution or water are prepared so that the amount of spray solution is 100 ml per 1 m ² , and 50 cm x 50 cm in a field where genus mushrooms, jellyfish, chinoke, hyokeki, and cedar moss are dominant. Four test areas (0.25 m ² ) were installed and sprayed uniformly. The survey was evaluated by observation according to the criteria shown in Table 2 on the third day after the treatment. The results are shown in Table 4.

Test example 4: Field foliage treatment pot test (weed emergence high season treatment)
A 350 cm ² plastic pot was filled with field soil, and seeds of Japanese barnyard millet, barnyard grass, dandelion, abalone, shiroza, and giant beetle were sown and covered with about 1 cm of soil. On the 30th day after sowing, the preparations containing 2% 2-ethylhexanoic acid (compound A) or 3,5,5-trimethylhexanoic acid (compound B) and 2% emulsifier (sorbitan monolaurate) Glyphosate (Compound C, trade name: Roundup Max Road liquid (Nissan Chemical Industries)), or glufosinate (Compound D, trade name: Busta liquid (Bayer Crop Science))) or bialaphos (Compound) E, trade name: Herbie liquid (manufactured by Meiji Seika Co., Ltd.), or carbbutylate (compound F, trade name: backup flowable (manufactured by SDS Biotech)), or sodium chlorate (compound G, trade name: Chlorate SL) Mix with water solvent (SDS Biotech) to a prescribed amount It was uniformly sprayed at a spray volume of 1 m ² per 100 ml. The test was carried out in a glass greenhouse at 18 to 30 ° C., and water was absorbed appropriately on the lower surface. The survey was evaluated by observation according to the criteria shown in Table 2 on the 3rd and 14th days after the treatment. The results are shown in Table 5.
In addition, the theoretical value in a table | surface has shown the expected value of the herbicidal effect of a mixture (namely, the herbicidal compound mixed as an active ingredient), ie, the expected value of an additive effect. The expected value was calculated by the following Colby equation (Colby SR Calculating synergistic and antagonistic responses of herbicide combinations, Weed, 15, pp. 20-22, 1967). That is, if the actually measured value (herbicidal effect) measured by the above test example is larger than this expected value, it means that a synergistic effect is exhibited in the herbicidal activity.

Test Example 5: Field foliage treatment pot test (weed emergence high season treatment)
A 350 cm ² plastic pot was filled with field soil, and seeds of Japanese millet, barnyard grass, Japanese dandelion, Yakuzou, Hakobe, Giant beetle were sown and covered with about 1 cm of soil. On the 30th day after sowing, the preparations containing 2% 2-ethylhexanoic acid (compound A) or 3,5,5-trimethylhexanoic acid (compound B) and 2% emulsifier (sorbitan monolaurate) Mixed or individually pyraflufenethyl (compound H, trade name: Ecopart Floorable (made by Nippon Agricultural Chemicals)), Thifensulfuron methyl (Compound I, trade name: Harmony Dry Flowable (made by DuPont)) or MCPP (Compound J, trade name: single fastening liquid (manufactured by Nisso Green)) and mixed so as to have a predetermined dosage, and uniformly sprayed with a spray liquid amount of 100 ml per 1 m ² . The test was carried out in a glass greenhouse at 18 to 30 ° C., and water was absorbed appropriately on the lower surface. The survey was evaluated by observation according to the criteria shown in Table 2 on the seventh day after the treatment. The results are shown in Table 6. The theoretical value in the table represents the expected value due to mixed use calculated by the same Colby equation as in Table 5.

Test Example 6: Field soil treatment pot test (pretreatment for weed generation)
A 350 cm ² plastic pot was filled with field soil, and seeds of Japanese barnyard millet, barnyard grass, Enocologosa, sparrow camellia, dandelion, and tuna were sown and covered with about 1 cm of soil. After water absorption, on the day after sowing, a mixture containing 10% 2-ethylhexanoic acid (compound A) or 3,5,5-trimethylhexanoic acid (compound B) and 2% emulsifier (sorbitan monolaurate) is mixed or , Pendimethalin (compound K, trade name: Green Care Granule wettable powder (manufactured by SDS Biotech)) or alachlor (compound L, trade name: Nissan Lasso emulsion (manufactured by Nissan Chemical Industries) )) And a predetermined amount, and sprayed uniformly on the soil surface at a spray volume of 200 ml per 1 m ² . The test was carried out in a glass greenhouse at 18 to 30 ° C., and water was absorbed appropriately on the lower surface. The investigation was evaluated by observation according to the criteria shown in Table 2 on the 21st day after the treatment. The results are shown in Table 7. The theoretical value in the table represents the expected value due to mixed use calculated by the same Colby equation as in Table 5.

Test Example 7: Field test of bryophyte foliage treatment (bryophyte growth period treatment)
A 50 cm × 50 cm square test area (0.25 m ² ) was installed in a field where the moss, moss and high moss dominate. Preparations containing 5% 2-ethylhexanoic acid (compound A) or 3,5,5-trimethylhexanoic acid (compound B) and 2% emulsifier (sorbitan monolaurate) are mixed together, or each is bialaphos (compound E, trade name: Herbie liquid (manufactured by Meiji Seika)) or carbbutylate (compound F, trade name: backup flowable (made by SDS Biotech)) or pyraflufenethyl (compound H, trade name: Eco) Part floorable (manufactured by Nippon Agricultural Chemicals Co., Ltd.)) was mixed so as to have a predetermined dosage, and sprayed uniformly with a spray liquid amount of 100 ml per 1 m ² . The survey was evaluated by observation according to the criteria shown in Table 2 on the 5th and 30th days after the treatment. The results are shown in Table 8. The theoretical value in the table represents the expected value due to mixed use calculated by the same Colby equation as in Table 5.

  As shown in Tables 3 and 4, the herbicidal composition according to the present invention is effective for treating undesired agricultural and non-agricultural plants accurately and promptly in the treatment of weed growing season and bryophyte growing season. I was able to control it. In particular, the withering characteristics of weed and bryophyte foliage treatments are comparable to chemical pesticides in that they exhibit medicinal properties immediately after treatment and can control plants that are not desired very quickly.

  Furthermore, as shown in Tables 5 to 8, the slow-acting herbicide that takes a long time to complete the herbicidal / detoxifying effect and the fast-acting herbicidal / destroying effect of the herbicide / destroying spectrum Even when used in combination with herbicides that have a short residual effect period, and herbicides that have only a herbicidal effect on pre-emergent weeds, supplementation of the herbicidal / detox spectrum and complementary treatment time In addition, the superiority of 2-ethylhexanoic acid and 3,5,5-trimethylhexanoic acid was proved in that it can provide a herbicidal composition that can be expected to have a synergistic effect due to mixed use.

Claims (4)

  An unwanted plant control composition comprising 2-ethylhexanoic acid and / or 3,5,5-trimethylhexanoic acid as an active ingredient.   An undesired plant control composition comprising as an active ingredient a first component comprising 2-ethylhexanoic acid and / or 3,5,5-trimethylhexanoic acid and a second component which is a chemical herbicide.   The second component chemical herbicide is selected from glyphosate and salts thereof, glufosinate, bialaphos, carbbutylate, pyraflufenethyl, thifensulfuron methyl, pendimethalin, alachlor, MCPP and salts thereof, sodium chlorate 1 3. The unwanted plant control composition according to claim 2, which is a herbicide component of more than one species.   The control method of the undesired plant which applies the effective amount of the control composition in any one of Claims 1-3 to an undesired plant.