WO2013168643A1 - 除草組成物 - Google Patents
除草組成物 Download PDFInfo
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- WO2013168643A1 WO2013168643A1 PCT/JP2013/062649 JP2013062649W WO2013168643A1 WO 2013168643 A1 WO2013168643 A1 WO 2013168643A1 JP 2013062649 W JP2013062649 W JP 2013062649W WO 2013168643 A1 WO2013168643 A1 WO 2013168643A1
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- weeds
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- herbicidal
- weed
- salt
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/34—Nitriles
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/36—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
- A01N37/38—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system
- A01N37/40—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
- A01N41/10—Sulfones; Sulfoxides
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
Definitions
- the present invention includes (a) nicosulfuron or a salt thereof (hereinafter abbreviated as Compound A), (b) prosulfuron or a salt thereof (hereinafter abbreviated as Compound B), (c) mesotrione, bicyclopyrone, dicamba, dicamba.
- the present invention relates to a herbicidal composition containing at least one herbicidal compound (hereinafter abbreviated as compound C) selected from the group consisting of esters, bromoxynyl, esters of bromoxynyl, and salts thereof.
- Patent Document 1 discloses a herbicidal composition of Compound B and certain known herbicides.
- Patent Document 2 discloses a herbicidal composition of 2- [4- (methylsulfonyl) -2-nitrobenzoyl] -1,3-cyclohexanedione and certain known herbicides.
- Patent Document 3 discloses a herbicidal composition of bicyclopyrone and certain known herbicides.
- any of the above patent documents there is no exemplification of the herbicidal composition of a specific combination of Compound A, Compound B and Compound C, which are the herbicidal active ingredients of the present invention. There is no specific description regarding the effect.
- An object of the present invention is to provide a herbicidal composition having a broader herbicidal spectrum and having a high activity, and to provide a method for controlling undesired plants or suppressing their growth using them.
- the present inventors applied each compound alone or in combination by combining a specific compound A, compound B and compound C, which are herbicidal active ingredients of the present invention.
- the present invention was completed by obtaining knowledge that an excellent herbicidal effect exceeding expectations could be obtained as compared with the case where two kinds were applied in combination (for example, a combination of Compound A and Compound C). That is, the present invention relates to a herbicidal composition containing Compound A, Compound B, and Compound C as active ingredients.
- the present invention relates to a method of applying an herbicidally effective amount of the herbicidal composition to an undesired plant or a place where they grow to control the undesired plant or suppress its growth. Further, the present invention relates to a method of applying the herbicidally effective amount of Compound A, the herbicidally effective amount of Compound B, and the herbicidally effective amount of Compound C to an undesirable plant or a place where they grow.
- the herbicidal composition of the present invention can control a wide range of undesired plants occurring on cultivated land or non-cultivated land.
- the herbicidal activity shows remarkable herbicidal activity when compound C, which is a specific third herbicidal active ingredient, is further mixed with the composition containing compound A and compound B.
- the herbicidal activity is more than the additive effect of the herbicidal activity of compound A and compound B mixed with the herbicidal activity of the third herbicidal active ingredient, ie, synergistic action. That is, since the herbicidal composition of the present invention can be applied at a lower dose than when each drug is applied alone, it is also effective in reducing the environmental load on the application area or its surroundings.
- E 2 ( ⁇ + ⁇ + ⁇ ) ⁇ ( ⁇ + ⁇ + ⁇ ) / 100 + ( ⁇ ) / 10000
- ⁇ Growth inhibition rate when herbicide X is treated in an amount of xg / ha
- ⁇ growth inhibition rate when herbicide Y is treated in an amount of yg / ha
- ⁇ Growth inhibition rate when herbicide Z is treated in an amount of zg / ha
- E 1 Growth inhibition rate expected when herbicide X is treated with xg / ha and herbicide Y is treated with yg / ha
- E 2 Growth inhibition rate expected when herbicide X is treated with xg / ha, herbicide Y with yg / ha and herbicide Z with zg / ha.
- the herbicidal composition of the present invention exhibits a synergistic effect when calculated by the above formula.
- nicosulfuron (generic name) is 2- (4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) -N, N-dimethylnicotinamide.
- prosulfuron (generic name) is 1- (4-methoxy-6-methyl-1,3,5-triazin-2-yl) -3- [2- (3,3,3-trifluoro Propyl) phenylsulfonyl] urea.
- mesotrione is 2- (4-mesyl-2-nitrobenzoyl) cyclohexane-1,3-dione.
- bicyclopyrone is 4-hydroxy-3- ⁇ 2-[(2-methoxyethoxy) methyl] -6- (trifluoromethyl) -3-pyridylcarbonyl ⁇ bicyclo [3.2. 1] Oct-3-en-2-one.
- dicamba is a compound described on pages 319 to 321 of The Pesticide Manual Sixteenth Edition.
- ester or a salt thereof examples include dicamba methyl, dicambabutyl, dicamba diglycolamine salt, dicamba dimethyl ammonium, dicamba diolamine, dicamba isopropyl ammonium, dicamba potassium, and dicamba sodium.
- bromoxynil (generic name) is a compound described on pages 131 to 134 of The Pesticide Manual Sixteenth Edition.
- ester or a salt thereof include bromoxynyl heptanoate, bromoxynyl octanoate, and bromoxynyl potassium salt.
- any salt may be used as long as it is agriculturally acceptable.
- alkali metal salts such as sodium salt and potassium salt; Alkaline earth metal salt; ammonium salt such as monomethylammonium salt, dimethylammonium salt, triethylammonium salt; inorganic acid salt such as hydrochloride, perchlorate, sulfate, nitrate; acetate, methanesulfonate
- organic acid salts such as hydrochloride, perchlorate, sulfate, nitrate
- methanesulfonate such organic acid salts.
- the mixing ratio of each compound in the present invention must be appropriately adjusted according to the formulation form, weather conditions, undesirable plant type, growth situation, etc., and cannot be determined unconditionally, but the mixing ratio of Compound A and Compound B is For example, the weight ratio is 75: 1 to 1:15, preferably 40: 1 to 1: 5.
- the mixing ratio of compound A and compound C is, for example, 15: 1 to 1: 100 by weight, and preferably 4: 1 to 1:50.
- the mixing ratio of compound A and compound C is desirably 4: 1 to 1:15 by weight.
- the mixing ratio of compound A and compound C is desirably 2: 1 to 1:40 by weight.
- the mixing ratio of Compound A and Compound C is desirably 1: 1 to 1:50 by weight.
- the mixture of compound A and compound B is further mixed with bromoxynyl, its ester or salt thereof by mixing the compound A with bromoxynyl, its ester or their salt in a mixing ratio of 1: 1 to 1:50. Compared to the ratio, a particularly excellent effect (for example, synergism) is exhibited.
- the herbicidally effective amounts of Compound A, Compound B, and Compound C need to be adjusted as appropriate according to the mixing ratio of each compound, formulation form, weather conditions, undesirable plant types, growth conditions, etc., and cannot be determined unconditionally.
- Compound A is 5-150 g / ha, preferably 10-100 g / ha
- Compound B is 2-75 g / ha, preferably 2.5-50 g / ha
- Compound C is 10-500 g / ha
- the preferred range is 25 to 500 g / ha.
- the herbicidally effective amount of Compound C is desirably 25 to 150 g / ha.
- the herbicidally effective amount of Compound C is desirably 25 to 400 g / ha.
- the herbicidally effective amount of Compound C is desirably 50 to 400 g / ha.
- the herbicidally effective amount of Compound C is desirably 100 to 500 g / ha.
- the herbicidal composition of the present invention may be applied to an undesired plant or to a place where they grow. Moreover, you may apply at any time before and after generation
- Various spraying forms such as soil treatment, foliage treatment, irrigation treatment, and flooding treatment can be selected.
- the present invention can be applied to farmland such as upland, orchards, and paddy fields, or non-farmland such as ridges, fallow fields, playgrounds, golf courses, vacant land, forests, factory sites, tracksides, and roadsides.
- the herbicidal composition of the present invention can control a wide range of undesirable plants such as annual and perennial weeds.
- cygnus weeds (sedge ( Cyperus spp.))
- cyperus weeds purple nutsedge ( Cyperus rotundus L.)
- crabs smallflower umbrella sedge ( Cyperus difformis L.)
- Yellow nutsedge Cyperus esculentus L.
- cyperus amur cyperus ( Cyperus microiria Steud.)
- Etc. Spikesedge ( Kyllinga spp.)) green kyllinga ( Kyllinga brevifolia Rottb. var.
- ryegrass Lolium spp.
- genus weed examples include Italian ryegrass (italian ryegrass ( Lolium multiflorum Lam.)), Etc.], foxtail weed (foxtail (Setaria spp.)) [as Setaria weeds such foxtail (green foxtail (Setaria viridis L.) ) and the like], chub Weeds (sorghum (Sorghum spp.)) [As the sorghum weeds such Johnson grass (johnsongrass (Sorghum halepense (L.) Pers.), A shutter Kane (shattercane (Sorghum bicolor (L.) Moench.
- oat ( Avena spp.)) [As the oat weed (eg, oat ( Avena fatua L.)), etc., brome ( Bromus spp.)) (for example, drooping brome ( Bromus tectorum L.), Japanese brome ( Bromus japonicus Thunb.)) and strawberry genus Weeds (meadowgrass ( Poa spp.)) (Examples of the strawberry genus weed include spruce butterflies (annual bluegrass ( Poa annua L.)), foxtail grass ( Alopecurus spp.)) Examples of weeds include blackgrass ( Alopecurus myosuroides Huds.) And shortawn foxtail ( Alopecurus aequalis Sobol.
- Senecio weeds such Senecio vulgaris (old-man-in-the -spring (Senecio vulgaris L.)) and the like
- Asteraceae weeds such as (Compositae); data Pigeon Pea weeds (rattlepod or rattlebox (Crotalaria spp. ))
- Tanukimame weeds for example Kurotararia (sunn-hemp (Crotalaria juncea L.
- Tsunokusanemu weeds proison bean (Sesbania spp.)
- Tesbania spp. examples of the genus Wexenaceae include Sesbania (rostrate sesbania ( Sesbania rostrata Bremek. & Oberm.)), Kibanatsunosane (sesbania pea ( Sesbania cannabina (Retz.) Pers.)), Etc.] lespedeza (Lespedeza striata (Thunb.) Hook.
- Umbelliferae weeds such as; violet (violet (Viola mandshurica W. Becker) ) violaceae weeds (violaceae, such as ); Niwazekishou (blue-eyedgrass (Sisyrinchium rosulatum Bicknell )) Iridaceae weeds such as (iridaceae); the United States Fuuro (carolina geranium (Geranium caroli geraniaceae weeds such as nianum L.)) (geraniaceae); Lamium purpureum (purple deadnettle (Lamium purpureum L.) ), henbit (henbit (Lamium amplexicaule L.)) Labiatae weeds such as (labiatae); velvetleaf (velvetleaf ( Abutilon theophrasti MEDIC.)), Mallow
- Dogbills (livid amaranth ( Amaranthus lividus L.)), purple amaranth ( Amaranthus blitum L.), smooth pigweed (Amaranthus hybridus L.), Amaranthus patulus Bertol.), Igahobiyu (powell amaranth (Amaranthus powellii S.Wats.
- Amaranthus viridis (slender amaranth (Amaranthus viridis L.) ), giant e Naga Ao Gay tow (palmer amaranth ( Amaranthus palmeri S.Wats.)), pigweed (redroot pigweed (Amaranthus retroflexus L.) ), Hiyumodoki (tall waterhemp (Amaranthus tuberculatus (Moq .) Sauer.)), Tari phosphono Blue Gay tow common waterhemp (Amaranthus tamariscinus Nutt.) ), Amaranthus spinosus (thorny amaranth (Amaranthus spinosus L.
- Solanum weeds (nightshade (Solanum spp)) [The Solanum weeds such nightshade (black nightshade ( Solanum nigrum L.)), etc.], such as solanaceae ; knotweed ( Polygonum spp.) (For example, spotted knotweed ( Polygonum lapathifolium L.) ), Sanaetade (green smartweed (Polygonum scabrum MOENCH) ) Polygonaceae weeds such as and the like] (Polygonaceae); Cardamine flexuosa (flexuous bittercress (Cardamine flexuosa WITH.
- cruciferous weeds such as (Cruciferae); Sicyos angulatus (burcucumber (Sicyos angulatus L.)) Cucurbitaceae weeds such as ( cucurbitaceae ); Commelinaceae weeds ( commelinaceae ) such as common dayflower ( Commelina communis L.); Snake strawberry ( Docknea chrysantha (Zoll. et Mo ..
- the herbicidal composition of the present invention is very useful in practical situations, and examples include the following cases.
- a significant synergistic effect is achieved, and even if the application amount of each of Compound A, Compound B and Compound C is small, an excellent herbicidal activity is exhibited, so that the influence on the surrounding environment is suppressed.
- Each of compound A, compound B, and compound C is applied alone or in combination of two (for example, a combination of compound A and compound C), and has a longer herbicidal effect. That is, a herbicidal composition having a residual effect can be provided.
- grass and broadleaf species It is possible to provide a herbicidal composition having a broad herbicidal spectrum and exhibiting a high effect on both.
- PSII photosystem II
- grass weeds red crustaceae weeds, cypress weeds, solanaceae weeds, mallow weeds, asteraceae weeds, or weedaceae weeds
- PSII photosystem II
- weeds with reduced susceptibility to PSII inhibitors such as grass weeds, red crustaceae weeds, cypress weeds, solanaceae weeds, mallow weeds, asteraceae weeds, or weedaceae weeds
- High herbicidal activity (9) It exhibits high herbicidal activity against weeds with reduced sensitivity to 4-HPPD inhibitors such as Amaranthaceae.
- the herbicidal composition of the present invention is suitable for the purpose of the present invention
- the herbicide, fungicide, antibiotics other than the above-mentioned active ingredients taking into consideration the application scene, undesirable plant types and growth conditions, etc. It can be used in combination with or combined with plant hormones, insecticides, fertilizers, safeners, etc., and in this case, more excellent effects and activities may be exhibited.
- the other herbicides are, for example, (1) those which are said to show herbicidal activity by disturbing the hormonal action of plants, and (2) those which are said to show herbicidal activity by inhibiting plant photosynthesis.
- the herbicidal composition of the present invention comprises compound A, compound B and compound C, which are active ingredients, blended with various adjuvants in accordance with a conventional method for the preparation of agricultural chemicals, powder, granule, granule wettable powder, hydration Agents, tablets, pills, capsules (including forms packaged with water-soluble films), aqueous suspensions, oily suspensions, microemulsions, suspoemulsions, aqueous solvents, emulsions, solutions, pastes, etc.
- the preparation can be prepared and applied in various forms. Moreover, as long as the objective of this invention is adapted, it can be set as the any formulation form normally used in the said field
- Compound A, Compound B and Compound C may be mixed together to prepare a preparation, or they may be prepared separately and mixed at the time of application.
- Adjuvants used in the formulation include solid carriers such as kaolinite, sericite, diatomaceous earth, slaked lime, calcium carbonate, talc, white carbon, kaolin, bentonite, clay, sodium carbonate, sodium bicarbonate, sodium sulfate, zeolite, starch; water Solvent such as toluene, xylene, solvent naphtha, dioxane, dimethyl sulfoxide, N, N-dimethylformamide, dimethylacetamide, N-methyl-2-pyrrolidone, alcohol; fatty acid salt, benzoate, polycarboxylate, alkyl Sulfate ester, alkyl sulfate, alkyl aryl sulfate, alkyl diglycol ether sulfate, alcohol sulfate ester, alkyl sulfonate, alkyl aryl sulfonate, aryl sulfonate, lignin sul
- each component of these adjuvants can be used by appropriately selecting one or two or more types without departing from the object of the present invention.
- auxiliary agents they can be appropriately selected from those known in the art.
- various commonly used adjuvants such as extenders, thickeners, anti-settling agents, antifreeze agents, dispersion stabilizers, safeners, antifungal agents, foaming agents, disintegrants, binders may be used. it can.
- the blending ratio of the active ingredient and various adjuvants in the herbicidal composition of the present invention can be about 0.001: 99.999 to 95: 5, preferably about 0.005: 99.995 to 90:10 in terms of weight percentage.
- the application method of the herbicidal composition of this invention can employ
- various conditions such as an application place, a formulation form, the kind of undesirable plant, and a growth condition.
- various methods are mentioned.
- Compound A, Compound B and Compound C prepared separately are diluted as they are or with water to a predetermined concentration, and various spreading agents (surfactants, vegetable oils, mineral oils, etc.) ) And add to the target plant.
- Compound A and Compound B prepared together and Compound C prepared are diluted as they are or with water or the like to a predetermined concentration, and various spreading agents ( Surfactant, vegetable oil, mineral oil, etc.) are added and applied to the target plant.
- a compound A and a compound C prepared together and a compound B prepared as it is or diluted to a predetermined concentration with water or the like, and various spreading agents (if necessary) Surfactant, vegetable oil, mineral oil, etc.) are added and applied to the target plant.
- a compound B and a compound C prepared together and a compound A prepared as such are diluted as they are or with water to a predetermined concentration, and various spreading agents ( Surfactant, vegetable oil, mineral oil, etc.) are added and applied to the target plant.
- Compound A, Compound B and Compound C prepared together are diluted as they are or with water or the like to a predetermined concentration, and various spreading agents (surfactants, vegetable oils, mineral oils, etc.) as necessary.
- the application to the target plant may be mixed and applied simultaneously when diluted to a predetermined concentration with water or the like, or Each may be applied continuously or at appropriate intervals. In order to exhibit the effects of the present invention more effectively, it is preferable to apply Compound A, Compound B and Compound C simultaneously.
- the weight ratio of (a) and (b) is in the range of 75: 1 to 1:15, and the weight ratio of (a) and (c) is in the range of 15: 1 to 1: 100.
- the weight ratio of (a) and (b) is in the range of 40: 1 to 1: 5, and the weight ratio of (a) and (c) is in the range of 4: 1 to 1:50.
- the herbicidal composition as described.
- the herbicidal composition according to (5) comprising only (a), (b), (c) and an auxiliary for formulation that does not exhibit herbicidal effects alone.
- the formulation adjuvant is at least one selected from the group consisting of a surfactant, a carrier, a solvent, a vegetable oil, a mineral oil, and a transesterified vegetable oil.
- the herbicidally effective amount of (a), the herbicidally effective amount of (b), and the herbicidally effective amount of (c) are applied to an undesired plant or a place where they grow to control or remove the undesired plant.
- a method for suppressing its growth (10) The method according to (8) or (9) above, wherein the undesirable plant is a weed having reduced sensitivity to the herbicidal compound.
- the amount of synergistic effect of herbicidal action (a) (herbicidal synergistic effective amount), the amount of (b) synergistic effect of herbicidal activity (herbicidal synergistic effective amount) and the amount of synergistic effect of herbicidal activity (c) (herbicidal synergistic effect).
- (13) The method according to (8) or (9) above, wherein (a) is applied at 5 to 150 g / ha, (b) at 2 to 75 g / ha, and (c) at 10 to 500 g / ha.
- (27) (a) a herbicidally effective amount of nicosulfuron or a salt thereof; (b) a herbicidally effective amount of prosulfuron or a salt thereof; and (c) an ester of mesotrione, bicyclopyrone, dicamba, dicamba, an ester of bromoxynyl, bromoxynyl. And a herbicidally effective amount of at least one herbicidal compound selected from the group consisting of salts thereof, and a method for controlling or suppressing the growth of undesirable plants or plants where they grow.
- a flowable agent (trade name: One Hope Emulsion, manufactured by Ishihara Sangyo Co., Ltd.) containing nicosulfuron as an active ingredient was used as nicosulfuron.
- prosulfuron a granular wettable powder (trade name: Peak, manufactured by Syngenta Co., Ltd.) containing prosulfuron as an active ingredient was used.
- mesotrione a flowable agent (trade name: Callisto, manufactured by Syngenta) containing mesotrione as an active ingredient was used.
- dicamba granule wettable powder (trade name: Celebrity B, manufactured by BASF) containing dicamba as an active ingredient was used.
- bicyclopyrone a wettable powder prepared from bicyclopyrone according to a conventional formulation method was used.
- bromoxynyl octanoate an emulsion containing bromoxynyl octanoate as an active ingredient (trade name: Certrol B, manufactured by Bayer Crop Science) was used.
- Test example 2 A 1 / 300,000 ha pot was filled with upland field soil and seeds of oats (wild oat, Avena fatua L.) were sown. One day later, a predetermined amount of the above preparation containing each of nicosulfuron, prosulfuron and mesotrione was diluted in water (equivalent to 1,000 L / ha) and treated with a small spray. On the 28th day after the chemical treatment, the growth state of oats was observed with the naked eye, and the growth inhibition rate (%) calculated in the same manner as in Test Example 1 is shown in Table 2.
- Test example 3 A 1 / 300,000 ha pot was filled with upland field soil and seeds of oats (wild oat, Avena fatua L.) were sown. One day later, a predetermined amount of the above preparation containing each of nicosulfuron, prosulfuron and mesotrione was diluted in water (equivalent to 1,000 L / ha) and treated with a small spray. On the 28th day after the chemical treatment, the growth state of oats was observed with the naked eye, and the growth inhibition rate (%) calculated in the same manner as in Test Example 1 is shown in Table 3.
- Test example 4 A 1 / 300,000 ha pot was filled with upland field soil and seeds of American deer (prickly sida, Sida spinosa L.) were sown. One day later, a predetermined amount of the above preparation containing each of nicosulfuron, prosulfuron, dicamba and bicyclopyrone was diluted in water (equivalent to 1,000 L / ha) and treated with a small spray. On the 28th day after the chemical treatment, the growth state of American deer was observed with the naked eye, and the growth inhibition rate (%) calculated in the same manner as in Test Example 1 is shown in Table 4.
- Test Example 5 In 1 / 300,000 ha pot, field soil was packed and seeds of black nightshade ( Solanum nigrum L.) were sown. One day later, a predetermined amount of the above preparation containing each of nicosulfuron, prosulfuron and bromoxynyl octanoate was diluted with water (equivalent to 1,000 L / ha) and treated with a small spray. On the 28th day after the chemical treatment, the growth state of the dogwood was observed with the naked eye, and the growth inhibition rate (%) calculated in the same manner as in Test Example 1 is shown in Table 5.
- Test Example 6 1 / 300,000 ha pot was filled with upland field soil and seeds of ragweed (annual ragweed, Ambrosia artemisiifolia L.) were sown. One day later, a predetermined amount of the above preparation containing each of nicosulfuron, prosulfuron and bromoxynyl octanoate was diluted in water (equivalent to 1,000 L / ha) and treated with a small spray. On the 28th day after the chemical treatment, the growth state of ragweed was observed with the naked eye, and the growth inhibition rate (%) calculated in the same manner as in Test Example 1 is shown in Table 6.
- Test Example 7 1 / 300,000ha pot was filled with upland field soil and seeds of American morning glory (ivy-leaved morningglory, Ipomoea hederacea (L.) Jacq.) Were sown.
- American morning glory ivy-leaved morningglory, Ipomoea hederacea (L.) Jacq.
- the growth state of American morning glory was observed with the naked eye, and the growth inhibition rate (%) calculated in the same manner as in Test Example 1 is shown in Table 7.
- Test Example 8 A 1 / 300,000 ha pot was filled with upland field soil, and seeds of korean lespedeza and Kummerowia stipulacea (Maxim.) Makino were sown. One day later, a predetermined amount of the above-mentioned preparation containing nicosulfuron, prosulfuron and bicyclopyrone was diluted in water (equivalent to 1,000 L / ha) and treated with a small spray. On the 28th day after the chemical treatment, the growth state of the Malaya spruce was observed with the naked eye, and the growth inhibition rate (%) calculated in the same manner as in Test Example 1 is shown in Table 8.
- Test Example 9 A 1 / 1,000,000 ha pot was filled with upland field soil and seeds of ragweed ( Ambrosia artemisiifolia L.) were sown. When ragweed reached the 6.0-8.0 leaf stage, a predetermined amount of the above-mentioned preparation containing each of nicosulfuron, prosulfuron and mesotrione was diluted in water (corresponding to 300 L / ha) and treated with a small spray. On the 14th day after the chemical treatment, the growth state of ragweed was observed with the naked eye, and the growth inhibition rate (%) calculated in the same manner as in Test Example 1 is shown in Table 9.
- Test Example 10 A 1 / 1,000,000 ha pot was filled with upland soil and seeded with seeds of Lespedeza striata (Thunb.) Hook. Et Arn. When Yakuzou reached 4.0 leaf stage, a predetermined amount of the above-mentioned preparation containing nicosulfuron, prosulfuron and dicamba was diluted in water (corresponding to 300 L / ha) and treated with a small spray. Table 14 shows the growth inhibition rate (%) calculated in the same manner as in Test Example 1 by observing the growth state of Yakuzou with the naked eye on the 14th day after the chemical treatment.
- Test Example 11 A 1 / 1,000,000 ha pot was filled with upland field soil and seeds of ibis ( Abutilon theophrasti Medic.) Were sown. When Ichibi reaches the 5.0-5.3 leaf stage, dilute predetermined amounts of the above-mentioned preparations containing nicosulfuron, prosulfuron, dicamba, bromoxynyl octanoate and bicyclopyrone in water (equivalent to 300 L / ha). The foliage was treated with a small spray. Table 20 shows the growth inhibition rate (%) calculated in the same manner as in Test Example 1 by observing the growth state of the lobster with the naked eye on the 20th day after the chemical treatment.
- a herbicidal composition having a broad herbicidal spectrum, a highly active and long-lasting effect is provided, and in particular, to a genetically modified crop having an increased herbicidal spectrum against grass species and resistant to ALS inhibitors and the like. Can be applied, and expansion of application scenes can be expected. Furthermore, the present invention addresses the field requirement to delay the development of resistance by combining active ingredients with different mechanisms of action even in weeds that have acquired resistance through repeated application of specific herbicides. Is also suitable.
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Abstract
Description
さらに、特許文献3にはビシクロピロンと一定の公知の除草剤との除草組成物が開示されている。
しかしながら、いずれの上記特許文献においても、本発明の除草有効成分である化合物Aと化合物Bと化合物Cとの具体的な組合せの除草組成物の例示はなく、それらを組み合わせたときに顕著な相乗作用を奏することについても、具体的な記載は見当たらない。
本発明の目的は、より幅広い殺草スペクトルを持ち、高活性な除草組成物を提供すること及びそれらを用いた望ましくない植物を防除又はその生育を抑制する方法を提供することである。
即ち本発明は、化合物Aと、化合物Bと、化合物Cとを有効成分として含有する除草組成物に関する。
また、前記除草組成物の除草有効量を、望ましくない植物又はそれらが生育する場所に施用し、望ましくない植物を防除又はその生育を抑制する方法に関する。
さらに、化合物Aの除草有効量と、化合物Bの除草有効量と、化合物Cの除草有効量とを、望ましくない植物又はそれらが生育する場所に施用する方法に関する。
すなわち、本発明の除草組成物は、各薬剤を単独で施用する場合に比し、低薬量で施用できるため、施用地域又はその周辺への環境負荷の軽減にも有効である。
2種の有効成分を組み合わせた場合の除草活性が、その2種の有効成分各々の除草活性の単純な合計(期待される活性)よりも大きくなる場合、これを相乗作用という。2種の有効成分の組合せにより期待される活性は、次のようにして計算することができる(Colby S.R.、「Weed」15巻、20~22頁、1967年を参照)。
E1=(α+β)-(αβ)/100
3種の有効成分を組み合わせた場合には、同様に、次のようにして計算することができる。
E2=(α+β+γ)-(αβ+αγ+βγ)/100+(αβγ)/10000
ただし式中、
α=除草剤Xをxg/haの量で処理した時の生育抑制率、
β=除草剤Yをyg/haの量で処理した時の生育抑制率、
γ=除草剤Zをzg/haの量で処理した時の生育抑制率。
E1=除草剤Xをxg/ha及び除草剤Yをyg/haの量で処理した時に期待される生育抑制率。
E2=除草剤Xをxg/ha、除草剤Yをyg/ha及び除草剤Zをzg/haの量で処理した時に期待される生育抑制率。
すなわち、実際の生育抑制率(実測値)が、前記計算による生育抑制率(計算値)より大きい場合には、組合せによる活性は相乗作用を示すということができる。
本発明の除草組成物は、前記式で計算した場合、相乗作用を示す。
化合物C中、ビシクロピロン(一般名)は、4-ヒドロキシ-3-{2-[(2-メトキシエトキシ)メチル]-6-(トリフルオロメチル)-3-ピリジルカルボニル}ビシクロ[3.2.1]オクト-3-エン-2-オンである。
化合物C中、ジカンバ(一般名)は、The Pesticide Manual Sixteenth Editionの第319頁~第321頁に記載されている化合物である。そのエステル又はそれらの塩としては、例えば、ジカンバメチル、ジカンバブトチル、ジカンバジグリコールアミン塩、ジカンバジメチルアンモニウム、ジカンバジオラミン、ジカンバイソプロピルアンモニウム、ジカンバカリウム、ジカンバナトリウムが挙げられる。
化合物C中、ブロモキシニル(一般名)は、The Pesticide Manual Sixteenth Editionの第131頁~第134頁に記載されている化合物である。そのエステル又はそれらの塩としては、例えば、ブロモキシニルヘプタノエート、ブロモキシニルオクタノエート、ブロモキシニルカリウム塩等が挙げられる。
化合物Cがメソトリオン又はその塩である場合、化合物Aと化合物Cの混合比率は、重量比で、望ましくは4:1~1:15である。
化合物Aと化合物Bの組合せに、さらにメソトリオンを、化合物Aとメソトリオンとの混合比率が4:1~1:15で混合することにより、他の混合比率に比べ、特に優れた効果(例えば相乗作用)を示す。
化合物Cがビシクロピロン又はその塩である場合、化合物Aと化合物Cの混合比率は、重量比で、望ましくは4:1~1:40である。
化合物Aと化合物Bの組合せに、さらにビシクロピロンを、化合物Aとビシクロピロンとの混合比率4:1~1:40で混合することにより、他の混合比率に比べ、特に優れた効果(例えば相乗作用)を示す。
化合物Cがジカンバ、そのエステル又はそれらの塩である場合、化合物Aと化合物Cの混合比率は、重量比で、望ましくは2:1~1:40である。
化合物Aと化合物Bの組合せに、さらにジカンバ、そのエステル又はそれらの塩を、化合物Aとジカンバ、そのエステル又はそれらの塩との混合比率2:1~1:40で混合することにより、他の混合比率に比べ、特に優れた効果(例えば相乗作用)を示す。
化合物Cがブロモキシニル、そのエステル又はそれらの塩である場合、化合物Aと化合物Cの混合比率は、重量比で、望ましくは1:1~1:50である。
化合物Aと化合物Bの組合せに、さらにブロモキシニル、そのエステル又はそれらの塩を、化合物Aとブロモキシニル、そのエステル又はそれらの塩との混合比率1:1~1:50混合することにより、他の混合比率に比べ、特に優れた効果(例えば相乗作用)を示す。
例えば化合物Aは5~150g/ha、望ましくは10~100g/haであり、化合物Bは2~75g/ha、望ましくは2.5~50g/haであり、化合物Cは10~500g/ha、望ましくは25~500g/haである。
化合物Cがメソトリオン又はその塩である場合、化合物Cの除草有効量は、望ましくは25~150g/haである。
化合物Cがビシクロピロン又はその塩である場合、化合物Cの除草有効量は、望ましくは25~400g/haである。
化合物Cがジカンバ、そのエステル又はそれらの塩である場合、化合物Cの除草有効量は、望ましくは50~400g/haである。
化合物Cがブロモキシニル、そのエステル又はそれらの塩である場合、化合物Cの除草有効量は、望ましくは100~500g/haである。
また、土壌処理、茎葉処理、灌水処理、湛水処理のような種々の散布形態を選択することができる。
さらに、畑地、果樹園、水田等の農耕地、或いは畦畔、休耕田、運動場、ゴルフ場、空き地、森林、工場敷地、線路脇、道路脇等の非農耕地への適用が可能である。
Solanum nigrum L.))などが挙げられる〕のようなナス科雑草(solanaceae);タデ属雑草(knotweed (Polygonum spp.))〔タデ属雑草としては、例えばオオイヌタデ(spotted knotweed(Polygonum lapathifolium L.))、サナエタデ(green smartweed(Polygonum scabrum MOENCH))などが挙げられる〕のようなタデ科雑草(polygonaceae);タネツケバナ(flexuous bittercress(Cardamine flexuosa WITH.))、シロガラシ属雑草(mustard (Sinapis spp.))〔シロガラシ属雑草としては、例えばノハラガラシ(Charlock (Sinapis arvensis L.))などが挙げられる〕のようなアブラナ科雑草(cruciferae);アレチウリ(burcucumber(Sicyos angulatus L.))のようなウリ科雑草(cucurbitaceae);ツユクサ(common dayflower(Commelina communis L.))のようなツユクサ科雑草(commelinaceae);ヘビイチゴ(mock strawberry(Duchesnea chrysantha ( Zoll. et Mor. ) Miq.))のようなバラ科雑草(rosaceae);クルマバザクロソウ(carpetweed(Mollugo verticillata L.))のようなザクロソウ科雑草(molluginacea);ヤエムグラ(false cleavers(Galium spurium var. echinospermon (Wallr.)Hayek))、シラホシムグラ(stickywilly(Galium aparine L.))のようなアカネ科雑草(rubiaceae);などが挙げられる。
(1)顕著な相乗作用を奏し、化合物A、化合物B及び化合物Cのそれぞれの施用量が少量であっても良好な除草活性を奏することから、周辺環境に与える影響が抑えられる。
(2)化合物A、化合物B及び化合物Cのそれぞれを単独で施用又は2種を組合せて施用(たとえば化合物Aと化合物Cとの組合せ)する場合に比して、除草効果の持続性の長い、即ち、残効性を持った除草組成物が提供できる。
(3)化合物A、化合物B及び化合物Cのそれぞれを単独で施用又は2種を組合せて施用(たとえば化合物Aと化合物Cとの組合せ)する場合に比して、イネ科草種と広葉草種の両方に対して高い効果を示す、幅広い除草スペクトラムを持つ除草組成物が提供できる。
(4)農耕地、特にトウモロコシ畑において強害雑草として問題となっているヒエ属、メヒシバ属、エノコログサ属、イチゴツナギ属、カラスムギ属、シバムギ属、スズメノテッポウ属、オヒシバ属、ツノアイアシ属、モロコシ属又はキビ属のような、一年生イネ科雑草及び多年生イネ科雑草を防除できる。
(5)高葉令の雑草、例えば8葉期の雑草に対しても高い除草活性を示し、これは特にイネ科雑草において顕著である。
(6)イネ科雑草や各種広葉雑草に対し、茎葉処理及び土壌処理のいずれであっても、良好な除草活性を奏する。
(7)カヤツリグサ科雑草、ヒユ科雑草、キク科雑草、アブラナ科雑草、ナデシコ科雑草又はイネ科雑草のような、ALS(アセトラクテート合成酵素)阻害剤に対する感受性が低下した雑草に対して高い除草活性を示す。
(8)イネ科雑草、アカザ科雑草、ヒユ科雑草、ナス科雑草、アオイ科雑草、キク科雑草又はタデ科雑草のような、PSII(光化学系II)阻害剤に対する感受性が低下した雑草に対して高い除草活性を示す。
(9)ヒユ科雑草のような4-HPPD阻害剤に対する感受性が低下した雑草に対して高い除草活性を示す。
前記他の除草剤は、例えば(1)植物のホルモン作用を攪乱することで除草効力を示すとされているもの、(2)植物の光合成を阻害することで除草効力を示すとされているもの、(3)それ自身が植物体中でフリーラジカルとなり、活性酸素を生成させて速効的な除草効力を示すとされているもの、(4)植物のクロロフィル生合成を阻害し、光増感過酸化物質を植物体中に異常蓄積させることで除草効力を示すとされているもの、(5)カロチノイドなどの植物の色素生合成を阻害し、白化作用を特徴とする除草効力を示すとされているもの、(6)イネ科植物に特異的に除草効力が強く認められるもの、(7)植物のアミノ酸生合成を阻害することで除草効力を示すとされているもの、(8)植物の細胞有糸分裂を阻害することで除草効力を示すとされているもの、(9)植物のタンパク質生合成あるいは脂質生合成を阻害することで除草効力を示すとされているもの、(10)植物に寄生することで除草効力を示すとされているもの、などが挙げられる。
例えば、以下のような方法が挙げられる。
(1)化合物A、化合物B及び化合物Cを別々に製剤調製したものを、そのまま、若しくは水等で所定濃度に希釈し、必要に応じて各種展着剤(界面活性剤、植物油、鉱物油など)を添加して、対象植物に施用する。
(2-1)化合物A及び化合物Bを一緒に製剤調製したものと、化合物Cを製剤調製したものとを、そのまま、若しくは水等で所定濃度に希釈し、必要に応じて各種展着剤(界面活性剤、植物油、鉱物油など)を添加して、対象植物に施用する。
(2-2)化合物A及び化合物Cを一緒に製剤調製したものと、化合物Bを製剤調製したものとを、そのまま、若しくは水等で所定濃度に希釈し、必要に応じて各種展着剤(界面活性剤、植物油、鉱物油など)を添加して、対象植物に施用する。
(2-3)化合物B及び化合物Cを一緒に製剤調製したものと、化合物Aを製剤調製したものとを、そのまま、若しくは水等で所定濃度に希釈し、必要に応じて各種展着剤(界面活性剤、植物油、鉱物油など)を添加して、対象植物に施用する。
(3)化合物A、化合物B及び化合物Cを一緒に製剤調製したものを、そのまま、若しくは水等で所定濃度に希釈し、必要に応じて各種展着剤(界面活性剤、植物油、鉱物油など)を添加して、対象植物に施用する。
前記施用方法(1)及び(2-1)~(2-3)において、対象植物への施用は、例えば、水等で所定濃度に希釈する時に混合して同時に施用してもよいし、或いは各々を連続して若しくは適切な間隔をあけて施用してもよい。本発明の効果をより効果的に発揮させるには、化合物A、化合物B及び化合物Cを同時に施用することが好ましい。
(1)(a)ニコスルフロン又はその塩と、(b)プロスルフロン又はその塩と、(c)メソトリオン、ビシクロピロン、ジカンバ、ジカンバのエステル、ブロモキシニル、ブロモキシニルのエステル及びそれらの塩からなる群より選ばれる少なくとも1種の除草性化合物とを含有する除草組成物。
(2)(a)と(b)と(c)とを除草相乗作用を奏する量(除草相乗有効量)で含有する、前記(1)に記載の除草組成物。
(3)(a)と(b)の重量比が75:1~1:15、(a)と(c)の重量比が15:1~1:100の範囲である、前記(1)に記載の除草組成物。
(4)(a)と(b)の重量比が40:1~1:5、(a)と(c)の重量比が4:1~1:50の範囲である、前記(1)に記載の除草組成物。
(5)除草性化合物(除草有効成分)として、(a)、(b)及び(c)のみを含有する、前記(1)に記載の除草組成物。
(6)(a)、(b)、(c)及び単独では除草効果を示さない製剤用補助剤のみからなる、前記(5)に記載の除草組成物。
(7)製剤用補助剤が界面活性剤、担体、溶剤、植物油、鉱物油及びエステル交換植物油からなる群より選ばれる少なくとも1種である、前記(5)に記載の除草組成物。
(8)(a)と(b)と(c)とを含有する除草組成物の除草有効量を、望ましくない植物又はそれらが生育する場所に施用し、望ましくない植物を防除又はその生育を抑制する方法。
(9)(a)の除草有効量と、(b)の除草有効量と、(c)の除草有効量とを、望ましくない植物又はそれらが生育する場所に施用し、望ましくない植物を防除又はその生育を抑制する方法。
(10)望ましくない植物が、除草性化合物に対する感受性が低下した雑草である、前記(8)又は(9)に記載の方法。
(11)望ましくない植物が、ALS(アセトラクテート合成酵素)阻害剤に対する感受性が低下した雑草である、前記(8)又は(9)に記載の方法。
(12)(a)の除草相乗作用を奏する量(除草相乗有効量)と(b)の除草相乗作用を奏する量(除草相乗有効量)と(c)の除草相乗作用を奏する量(除草相乗有効量)とを施用する、前記(8)又は(9)に記載の方法。
(13)(a)を5~150g/ha、(b)を2~75g/ha、(c)を10~500g/haを施用する、前記(8)又は(9)に記載の方法。
(14)(a)を10~100g/ha、(b)を2.5~50g/ha、(c)を25~500g/haを施用する、前記(8)又は(9)に記載の方法。
(15)除草組成物の施用が土壌処理である、前記(8)又は(9)に記載の方法。
(16)望ましくない植物が、トウモロコシ畑における強害雑草である、前記(8)又は(9)に記載の方法。
(17)望ましくない植物が、発生前~8葉期の雑草である、前記(8)又は(9)に記載の方法。
(18)望ましくない植物が、一年生又は多年生のイネ科雑草である、前記(8)又は(9)に記載の方法。
(19)(c)がビシクロピロン、ジカンバ、ジカンバのエステル、ブロモキシニル、ブロモキシニルのエステル及びそれらの塩からなる群より選ばれる少なくとも1種の除草性化合物である、前記(1)に記載の除草組成物。
(20)(c)がメソトリオン、ビシクロピロン及びそれらの塩からなる群より選ばれる少なくとも1種の除草性化合物である、前記(1)に記載の除草組成物。
(21)(c)がブロモキシニル、ブロモキシニルのエステル及びそれらの塩からなる群より選ばれる少なくとも1種の除草性化合物である、前記(1)に記載の除草組成物。
(22)(c)がメソトリオン又はその塩である、前記(1)に記載の除草組成物。
(23)前記(1)の(a)と(b)と(c)とを含有する、ヒルガオ科雑草、ナス科雑草、イネ科雑草、マメ科雑草、キク科雑草又はアオイ科雑草の防除剤。
(24)前記(1)の(a)と(b)と(c)とを含有する、ヒルガオ科雑草又はナス科雑草の防除剤。
(25)ヒルガオ科雑草、ナス科雑草、イネ科雑草、マメ科雑草、キク科雑草又はアオイ科雑草を防除又はその生育を抑制する、前記(1)に記載の除草組成物。
(26)ヒルガオ科雑草又はナス科雑草を防除又はその生育を抑制する、前記(1)に記載の除草組成物。
(27)(a)ニコスルフロン又はその塩の除草有効量と、(b)プロスルフロン又はその塩の除草有効量と、(c)メソトリオン、ビシクロピロン、ジカンバ、ジカンバのエステル、ブロモキシニル、ブロモキシニルのエステル及びそれらの塩からなる群より選ばれる少なくとも1種の除草性化合物の除草有効量とを、望ましくない植物又はそれらが生育する場所に施用し、望ましくない植物を防除又はその生育を抑制する方法。
(28)望ましくない植物が、ヒルガオ科雑草、ナス科雑草、イネ科雑草、マメ科雑草、キク科雑草又はアオイ科雑草である、前記(27)に記載の方法。
(29)望ましくない植物が、ヒルガオ科雑草又はナス科雑草である、前記(27)に記載の方法。
(30)望ましくない植物が、一年生又は多年生のイネ科雑草である、前記(27)に記載の方法。
試験例において、ニコスルフロンとしては、ニコスルフロンを有効成分とするフロアブル剤(商品名:ワンホープ乳剤、石原産業社製)を用いた。
プロスルフロンとしては、プロスルフロンを有効成分とする顆粒水和剤(商品名:Peak、シンジェンタ社製)を用いた。
メソトリオンとしては、メソトリオンを有効成分とするフロアブル剤(商品名:Callisto、シンジェンタ社製)を用いた。
ジカンバとしては、ジカンバを有効成分とする顆粒水和剤(商品名:Celebrity B、BASF社製)を用いた。
ビシクロピロンとしては、ビシクロピロンを通常の製剤方法に準じて調製した水和剤を用いた。
ブロモキシニルオクタノエートとしては、ブロモキシニルオクタノエートを有効成分とする乳剤(商品名:Certrol B、バイエルクロップサイエンス社製)を用いた。
1/300,000haポットに畑作土壌をつめ、クロタラリア(sunn-hemp、Crotalaria juncea L.)の種子を播種した。その1日後、ニコスルフロン、プロスルフロン及びメソトリオンのそれぞれを含有する上記製剤の所定量を水(1,000L/ha相当)に希釈し、小型スプレーで土壌処理した。
薬剤処理後、28日目にクロタラリアの生育状態を肉眼で観察調査し、後記評価基準に従って評価した。生育抑制率(%)〔実測値〕及び前記コルビー(Colby)の方法により算出した生育抑制率(%)〔計算値〕を第1表に示す。
生育抑制率(%)=0(無処理区同等)~100(完全枯殺)の抑草率(%)
1/300,000haポットに畑作土壌をつめ、カラスムギ(wild oat、Avena fatua L.)の種子を播種した。その1日後、ニコスルフロン、プロスルフロン及びメソトリオンのそれぞれを含有する上記製剤の所定量を水(1,000L/ha相当)に希釈し、小型スプレーで土壌処理した。
薬剤処理後、28日目にカラスムギの生育状態を肉眼で観察調査し、前記試験例1と同様に算出した生育抑制率(%)を第2表に示す。
1/300,000haポットに畑作土壌をつめ、カラスムギ(wild oat、Avena fatua L.)の種子を播種した。その1日後、ニコスルフロン、プロスルフロン及びメソトリオンのそれぞれを含有する上記製剤の所定量を水(1,000L/ha相当)に希釈し、小型スプレーで土壌処理した。
薬剤処理後、28日目にカラスムギの生育状態を肉眼で観察調査し、前記試験例1と同様に算出した生育抑制率(%)を第3表に示す。
1/300,000haポットに畑作土壌をつめ、アメリカキンゴジカ(prickly sida、Sida spinosa L.)の種子を播種した。その1日後、ニコスルフロン、プロスルフロン、ジカンバ及びビシクロピロンのそれぞれを含有する上記製剤の所定量を水(1,000L/ha相当)に希釈し、小型スプレーで土壌処理した。
薬剤処理後、28日目にアメリカキンゴジカの生育状態を肉眼で観察調査し、前記試験例1と同様に算出した生育抑制率(%)を第4表に示す。
1/300,000haポットに畑作土壌をつめ、イヌホオズキ(black nightshade、Solanum nigrum L.)の種子を播種した。その1日後、ニコスルフロン、プロスルフロン及びブロモキシニルオクタノエートのそれぞれを含有する上記製剤の所定量を水(1,000L/ha相当)に希釈し、小型スプレーで土壌処理した。
薬剤処理後、28日目にイヌホオズキの生育状態を肉眼で観察調査し、前記試験例1と同様に算出した生育抑制率(%)を第5表に示す。
1/300,000haポットに畑作土壌をつめ、ブタクサ(annual ragweed、Ambrosia artemisiifolia L.)の種子を播種した。その1日後、ニコスルフロン、プロスルフロン及びブロモキシニルオクタノエートのそれぞれを含有する上記製剤の所定量を水(1,000L/ha相当)に希釈し、小型スプレーで土壌処理した。
薬剤処理後、28日目にブタクサの生育状態を肉眼で観察調査し、前記試験例1と同様に算出した生育抑制率(%)を第6表に示す。
1/300,000haポットに畑作土壌をつめ、アメリカアサガオ(ivy-leaved morningglory、Ipomoea hederacea (L.) Jacq.)の種子を播種した。その1日後、ニコスルフロン、プロスルフロン及びビシクロピロンのそれぞれを含有する上記製剤の所定量を水(1,000L/ha相当)に希釈し、小型スプレーで土壌処理した。
薬剤処理後、14日目にアメリカアサガオの生育状態を肉眼で観察調査し、前記試験例1と同様に算出した生育抑制率(%)を第7表に示す。
1/300,000haポットに畑作土壌をつめ、マルバヤハズソウ(korean lespedeza、Kummerowia stipulacea (Maxim.) Makino)の種子を播種した。その1日後、ニコスルフロン、プロスルフロン及びビシクロピロンのそれぞれを含有する上記製剤の所定量を水(1,000L/ha相当)に希釈し、小型スプレーで土壌処理した。
薬剤処理後、28日目にマルバヤハズソウの生育状態を肉眼で観察調査し、前記試験例1と同様に算出した生育抑制率(%)を第8表に示す。
1/1,000,000haポットに畑作土壌をつめ、ブタクサ(Ambrosia artemisiifolia L.)の種子を播種した。ブタクサが6.0-8.0葉期に達したとき、ニコスルフロン、プロスルフロン及びメソトリオンのそれぞれを含有する上記製剤の所定量を水(300L/ha相当)に希釈し、小型スプレーで茎葉処理した。
薬剤処理後、14日目にブタクサの生育状態を肉眼で観察調査し、前記試験例1と同様に算出した生育抑制率(%)を第9表に示す。
1/1,000,000haポットに畑作土壌をつめ、ヤハズソウ(Lespedeza striata (Thunb.) Hook. et Arn.)の種子を播種した。ヤハズソウが4.0葉期に達したとき、ニコスルフロン、プロスルフロン及びジカンバのそれぞれを含有する上記製剤の所定量を水(300L/ha相当)に希釈し、小型スプレーで茎葉処理した。
薬剤処理後、14日目にヤハズソウの生育状態を肉眼で観察調査し、前記試験例1と同様に算出した生育抑制率(%)を第10表に示す。
1/1,000,000haポットに畑作土壌をつめ、イチビ(Abutilon theophrasti Medic.)の種子を播種した。イチビが5.0-5.3葉期に達したとき、ニコスルフロン、プロスルフロン、ジカンバ、ブロモキシニルオクタノエート及びビシクロピロンのそれぞれを含有する上記製剤の所定量を水(300L/ha相当)に希釈し、小型スプレーで茎葉処理した。
薬剤処理後、20日目にイチビの生育状態を肉眼で観察調査し、前記試験例1と同様に算出した生育抑制率(%)を第11表に示す。
さらに、本発明は、特定の除草剤の繰り返し施用により、抵抗性を獲得するに至った雑草においても、異なる作用メカニズムを有する有効成分を組み合わせることにより、抵抗性の発達を遅らせるという現場の要求にも適うものである。
Claims (15)
- (a)ニコスルフロン又はその塩と、(b)プロスルフロン又はその塩と、(c)メソトリオン、ビシクロピロン、ジカンバ、ジカンバのエステル、ブロモキシニル、ブロモキシニルのエステル及びそれらの塩からなる群より選ばれる少なくとも1種の除草性化合物とを含有する除草組成物。
- (a)と(b)との混合比率が、重量比で75:1~1:15であり、(a)と(c)との混合比率が重量比で15:1~1:100である、請求項1に記載の除草組成物。
- (c)がビシクロピロン、ジカンバ、ジカンバのエステル、ブロモキシニル、ブロモキシニルのエステル及びそれらの塩からなる群より選ばれる少なくとも1種の除草性化合物である、請求項1に記載の除草組成物。
- (c)がメソトリオン、ビシクロピロン及びそれらの塩からなる群より選ばれる少なくとも1種の除草性化合物である、請求項1に記載の除草組成物。
- (c)がブロモキシニル、ブロモキシニルのエステル及びそれらの塩からなる群より選ばれる少なくとも1種の除草性化合物である、請求項1に記載の除草組成物。
- (c)がメソトリオン又はその塩である、請求項1に記載の除草組成物。
- ヒルガオ科雑草、ナス科雑草、イネ科雑草、マメ科雑草、キク科雑草又はアオイ科雑草を防除又はその生育を抑制する、請求項1に記載の除草組成物。
- (a)ニコスルフロン又はその塩の除草有効量と、(b)プロスルフロン又はその塩の除草有効量と、(c)メソトリオン、ビシクロピロン、ジカンバ、ジカンバのエステル、ブロモキシニル、ブロモキシニルのエステル及びそれらの塩からなる群より選ばれる少なくとも1種の除草性化合物の除草有効量とを、望ましくない植物又はそれらが生育する場所に施用し、望ましくない植物を防除又はその生育を抑制する方法。
- (a)を5~150g/ha、(b)を2~75g/ha、(c)を10~500g/ha施用する、請求項8に記載の方法。
- 望ましくない植物が、トウモロコシ畑における強害雑草である請求項8に記載の方法。
- 望ましくない植物が、除草性化合物に対する感受性が低下した雑草である、請求項8に記載の方法。
- 望ましくない植物が、発生前~8葉期の雑草である、請求項8に記載の方法。
- 望ましくない植物が、ヒルガオ科雑草、ナス科雑草、イネ科雑草、マメ科雑草、キク科雑草又はアオイ科雑草である、請求項8に記載の方法。
- 望ましくない植物が、ヒルガオ科雑草又はナス科雑草である、請求項8に記載の方法。
- 望ましくない植物が、一年生又は多年生のイネ科雑草である、請求項8に記載の方法。
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MX2014013598A MX359630B (es) | 2012-05-08 | 2013-04-30 | Composición herbicida. |
BR112014027668A BR112014027668A2 (pt) | 2012-05-08 | 2013-04-30 | composição herbicida |
EP18193634.5A EP3437474A3 (en) | 2012-05-08 | 2013-04-30 | Herbicidal composition |
US14/398,289 US9380783B2 (en) | 2012-05-08 | 2013-04-30 | Herbicidal composition |
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CN104082327A (zh) * | 2014-06-26 | 2014-10-08 | 广东中迅农科股份有限公司 | 一种用于玉米田苗后除草的农药组合物 |
US9648881B2 (en) | 2011-12-27 | 2017-05-16 | Ishihara Sangyo Kaisha, Ltd. | Herbicidal composition comprising nicosulfuron or its salt and S-metolachlor or its salt |
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RU2014149205A (ru) * | 2012-05-08 | 2016-06-27 | Исихара Сангио Кайся, Лтд. | Гербицидная композиция |
EP3207800B1 (en) * | 2016-02-16 | 2019-07-24 | UPL Europe Ltd | Herbicide combination |
RU2716578C1 (ru) * | 2019-02-25 | 2020-03-12 | ООО "Агро Эксперт Груп" | Жидкая гербицидная композиция |
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Publication number | Priority date | Publication date | Assignee | Title |
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US9648881B2 (en) | 2011-12-27 | 2017-05-16 | Ishihara Sangyo Kaisha, Ltd. | Herbicidal composition comprising nicosulfuron or its salt and S-metolachlor or its salt |
US10092002B2 (en) | 2011-12-27 | 2018-10-09 | Ishihara Sangyo Kaisha, Ltd. | Herbicidal composition comprising nicosulfuron or its salt and S -metolachlor or its salt |
CN104082327A (zh) * | 2014-06-26 | 2014-10-08 | 广东中迅农科股份有限公司 | 一种用于玉米田苗后除草的农药组合物 |
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RU2014149205A (ru) | 2016-06-27 |
US9693559B2 (en) | 2017-07-04 |
MX359630B (es) | 2018-10-03 |
US9380783B2 (en) | 2016-07-05 |
BR112014027668A2 (pt) | 2017-06-27 |
PT2848126T (pt) | 2018-12-17 |
EP2848126A1 (en) | 2015-03-18 |
EP3437474A3 (en) | 2019-03-13 |
US20150087515A1 (en) | 2015-03-26 |
EP2848126A4 (en) | 2016-05-25 |
ES2700178T3 (es) | 2019-02-14 |
PL2848126T3 (pl) | 2019-03-29 |
CN104284587B (zh) | 2016-06-29 |
EP2848126B1 (en) | 2018-09-12 |
RS58178B1 (sr) | 2019-03-29 |
US20160174561A1 (en) | 2016-06-23 |
CN104284587A (zh) | 2015-01-14 |
JPWO2013168643A1 (ja) | 2016-01-07 |
MX2014013598A (es) | 2014-12-05 |
EP3437474A2 (en) | 2019-02-06 |
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