JP5563773B2 - Herbicidal composition - Google Patents

Description

  The present invention relates to a herbicidal composition. More specifically, the present invention relates to a herbicidal composition containing, as active ingredients, a herbicidal active ingredient flufenacet and a specific known herbicidal active ingredient.

  Fulfenacet is well known as a herbicidal active compound (Non-patent Document 1). Moreover, the herbicide containing heteroaryl oxyacetamide including a flufenacet is known (patent document 1). Frufenacet shows a high herbicidal effect, particularly on grasses and some broad-leaved weeds, but it does not necessarily show a sufficient herbicidal effect on the growing season treatment of broad-leaved weeds such as chickweed, shiroza, and tadpoles.

Japanese Patent Publication No. 1995 No. 509695 Publication

The Pesticide Manual 14th edition, 2006 (published by British Crop Production Council)

The present inventors have found that the composition shown below exhibits an extremely excellent herbicidal effect.
Thus, the present invention comprises (a) flufenacet as an active ingredient, and (b) linuron, oxadiargyl, promethrin, flumioxazin, imazamox, bentazone, propoxycarbazone, DCMU, pendimethalin, flurtamone, chloro IPC, indanophan, Oxadiazone, benfrate, metolachlor, alachlor, phenoxapropethyl, ethoxysulfuron, DBN, MCP-Na, picolinafene, fluazifop, S-metolachlor, cetoxydim, butamifos, propyzamide, bialaphos, paraquat, pyroxasulfone, diflufenican and It provides a herbicidal composition comprising at least one selected from the group consisting of diquats.

  According to the above composition of the invention, surprisingly, compared to the case where each active compound is used alone, it exhibits a herbicidal effect substantially higher than the sum of the effects of each of them alone, As a result, when carrying out weed control, it is possible to substantially reduce the concentration of each drug used so far. At the same time, according to the composition, a broad herbicidal spectrum can be obtained.

  In the composition of the present invention, the herbicidal compound used as the component (b) is a compound represented by a known general name described in the non-patent literature. The herbicidal compound as component (b) can be used alone in the composition of the present invention, or can be used in combination of two or more. Preferred examples of the herbicidal compound of component (b) include linuron, oxadiargyl, promethrin, flumioxazin, imazamox, bentazone, propoxycarbazone, DCMU, pendimethalin, flurtamone, promethrin, and diflufenican.

In the composition of the present invention, the mixing ratio of the component (a) and the component (b) can be varied over a relatively wide range depending on the application time, application region, application method, etc. of the composition. Is within the range of 1/100 to 100 parts by weight, preferably 1/20 to 10 parts by weight of at least one herbicidal compound as component (b) with respect to 1 part by weight of flufenaset as component (a). Can be used in More specifically, the use ratio of the component (b) per 1 part by weight of the component (a) full-phenacet is shown below with representative examples of the component (b).
(B-1) Linuron: 1 / 2-2 parts by weight, preferably 1-1.5 parts by weight (b-2) Promethrin: 1-2 parts by weight, preferably 1-1.5 parts by weight (b -3) Flumioxazin: 1/20 to 1/5 parts by weight, preferably 1/15 to 1/10 parts by weight (b-4) Oxadiargyl: 1/2 to 2 parts by weight, preferably 1-1. 5 parts by weight (b-5) imazamox: 1/30 to 1/5 parts by weight, preferably 1/20 to 1/10 parts by weight (b-6) bentazone: 1/5 to 5 parts by weight, preferably 1/2 to 2 parts by weight (b-7) propoxycarbazone: 1/15 to 1/2 parts by weight, preferably 1/10 to 1/5 parts by weight (b-8) DCMU: 1 to 5 to 2 Parts by weight, preferably 1 / 2-1 part by weight (b-9) pendimethalin: 1-10 parts by weight, preferably 2-2 parts by weight Parts by weight (b-10) chloro IPC: 1 to 10 parts by weight, preferably 2 to 5 parts by weight (b-11) flurtamone: 1 to 5 parts by weight, preferably 2 to 3 parts by weight (b-12) Diflufenican: 1/8 to 1 part by weight, preferably 1/4 to 1/2 part by weight The composition of the present invention exhibits a strong herbicidal effect. Therefore, it can be used for various weeds generated in upland fields and paddy fields.

Weed broadly means all plants that grow in undesirable places.
The composition of the present invention can be used, for example, between the following plants and weeds.
Genus of dicotyledonous weeds: Sinapis, Lepidium, Yamgra Kinutaso, Galium, Stellaria, Chenopodium, Urtica, Urgono c Amaranthus, Amaranthus, Portulaca, Xanthium, Ipomoea, Polygonum, Ambrosia, Aumana fuji, S Potatoes (Solanum), Red peppers (Roripppa), Omitorisou (Lamium), Stag beetles y Veronica, Datura, Violet, Violet, Galeopsis, Papaver, Centaurea, Galinosa, R Matricaria) etc.

  The genus of dicotyledonous plants: cotton (Gossypium), soybean (Glycine), chard sugar beet (Beta), carrot (Daucus), common bean (Peanus), pea (Pisum), eggplant potato (Solanum) (Linum), sweet potato morning glory (Ipomoe), broad bean nantengagi (Vicia), tobacco (Nicotiana), tomato (Lycopersicon), peanut (Arachis), rapeseed cabbage cabbage (Brassica), aculine c Melon (Cucumis), pumpkin (Cucurbita), etc.

  The genus of monocotyledonous weeds: Echinochloa, Enokoro Awa (Setaria), Millet (Panicum), Dingitaria, Ayugaeri Timothy (Phleum), Strawberry Tuna Suzumenokatabira (Poa), Ushikokesa Dobo Ohishiba Shikokubie (Eleuusine), Dokumugi (Lolium), Swan-growth Inumugi (Bromus), Oats oats (Ovena) (Avena), Cyperus papyrus shichitoui hamasuge (Cyper), Moro-g Konogi (Monochoria), Tentsuki (Fimbristylis), Omodaka Kwai (Sagittaria), Hariy Ku Guwai (Eleocharis), bulrush, Ukiyagura-thick (Scirpus), Paspalum (Paspalum), platypus (Ischaemum), Agrostis (Agrostis), foxtail (Alopecurus), bermudagrass (Cynodon) and so on.

  The genus of monocotyledonous plants: rice (Oryza), corn hop corn (Zea), wheat (Triticum), barley (Hordeum), oats (Ovena), rye (Secale), sorghum (Sorghum), Millet (Panicum), sugarcane, Waseobana (Saccharum), pineapple (Ananas), asparagus (Asparagus), leek and leek (Allium) and so on.

  The use of the composition of the present invention is not limited to the above-mentioned plants, and can be applied to other plants as well. Further, depending on the concentration of use, the composition can control the weeds non-selectively, and can be used, for example, in industrial sites such as factories, railway tracks, roads, plantations, and non-plantations.

  Further, the composition can be used for weed control in perennial plant cultivation, for example, afforestation, ornamental plantation, orchard, vineyard, citrus orchard, nut orchard, banana plantation, coffee plantation, tea plantation It can be applied to cultivating field, rubber cultivating field, Guinea oil palm cultivating field, cocoa cultivating field, orchard and hop cultivating field, and can be applied for selective weed control in annual plant cultivation.

  When the composition of the present invention is used for controlling weeds, it can be made into a usual preparation form. Examples of the dosage form include liquids, emulsions, wettable powders, suspensions, powders, soluble powders, granules, granular wettable powders, concentrated suspension emulsions, solid agents (jumbo drugs), and floating properties. Examples include granules, microcapsules in a polymer substance, and the like.

  These preparations can be prepared by methods known per se. For example, the components (a) and (b) can be combined with a spreading agent, i.e. a liquid diluent and / or a solid diluent, and if necessary a surfactant, i.e. an emulsifier and / or a dispersant and A formulation according to the invention can be prepared by mixing with / or using a foam-forming agent.

  When water is used as the spreading agent, for example, an organic solvent can be used as an auxiliary solvent. Examples of the liquid diluent include aromatic hydrocarbons (for example, xylene, toluene, alkylnaphthalene), chlorinated aromatic or chlorinated aliphatic hydrocarbons (for example, chlorobenzenes, ethylene chloride, methylene chloride, etc.) ), Aliphatic hydrocarbons [eg, cyclohexane and the like or paraffins (eg, mineral oil fractions, minerals and vegetable oils, etc.)], alcohols (eg, butanol, glycol and their ethers or esters), ketones (eg, , Acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, etc.), organic solvents such as strong solvents (for example, dimethylformamide, dimethyl sulfoxide, etc.) and water.

  Examples of solid diluents include ammonium salts and ground natural minerals (for example, kaolin, clay, talc, chalk, quartz, attapulgite, montmorillonite, diatomaceous earth, etc.), ground synthetic minerals (for example, highly dispersed silicic acid, alumina, silicic acid) Salt, etc.). Examples of the solid carrier for the powder include, for example, crushed and separated rocks (for example, calcite, marble, pumice, gypsum, dolomite, etc.), synthetic grains of inorganic and organic powders, and fine organic substances. (For example, sawdust, coconut fruit, corn cobs, tobacco stem, etc.) can be used.

  Examples of emulsifiers and / or foams include nonionic and anionic emulsifiers [for example, polyoxyethylene fatty acid esters, polyoxyethylene fatty alcohol ethers (for example, alkylaryl polyglycol ethers, alkyl sulfonates, alkyl sulfates). , Aryl sulfonates, etc.)], and albumin hydrolysis products.

  As the dispersant, for example, lignin sulfite waste liquid and methylcellulose are suitable.

  Fixing agents can also be used in preparations (powder, granules, emulsions), such as carboxymethyl cellulose, natural and synthetic polymers (for example, gum arabic, polyvinyl alcohol, polyvinyl acetates, etc.), Examples thereof include natural phospholipids (for example, cephalins and lecithins) and synthetic phospholipids. Furthermore, mineral oils and vegetable oils can also be used as additives.

  Colorants can also be used, such as inorganic pigments (eg, iron oxide, titanium oxide, Prussian blue, etc.), alizarin dyes, organic dyes such as azo dyes or metal phthalocyanine dyes, and further And trace elements such as iron, manganese, boron, copper, cobalt, molybdenum and zinc salts.

  In general, the preparation can contain the components (a) and (b) in a total concentration of 0.1 to 95% by weight, preferably 0.5 to 90% by weight.

  The composition of the present invention can be used as it is or in the form of a preparation for controlling weeds. In addition, the components (a) and (b) can be mixed in a tank at the time of use. Known active compounds, especially active compounds commonly used in paddy fields, such as fungicides, insecticides, plant growth regulators, plant nutrients, soil conditioners, safeners and other herbicides Is also possible. As a preferred example thereof, 1- (α, α-dimethylbenzyl) -3-p-tolylurea is added to the composition of the present invention as a safener for 1 part by weight of the compound (a) of the formula (I). It can be added in an amount in the range of ~ 200 parts by weight, preferably 2-100 parts by weight.

  The composition of the present invention can be used as it is, in the form of a preparation thereof, or an application form prepared by further diluting from the preparation, for example, a preparation solution for spraying (e.g., ready-to-use solution), emulsion, suspension, It can be used in the form of powder, wettable powder, granule or solid form. The preparations in these forms can be applied to paddy fields by usual methods such as liquid spraying, spraying, atomizing, dusting, and dusting.

  The composition of the present invention can be applied to rice fields before, at the time of rice planting, or after rice planting. The amount of the composition that can be applied can vary within a substantial range. The application rate can be, for example, within the range of 0.01 to 5 kg / ha, preferably 0.05 to 4 / kg / ha, as the total amount of component (a) and component (b).

  The excellent effects of the composition according to the present invention will be described more specifically by the following examples. However, the present invention should not be limited to this.

Biological test examples and formulation examples:
Preparation of reagent reagent Carrier: acetone 5 parts by weight Surfactant: benzyloxypolyglycol ether 1 part by weight The above carrier and surfactant and 1 part by weight of active compound (component (a) or (b)) After mixing, the resulting preparation is diluted with water to prepare a reagent agent having a predetermined dosage.
Test Example 1 Weed Control Effect Test Method Field soil was filled in a plastic pot having a diameter of 9 cm, and seeds of hinoki shiba, damselfly, damselfly, scallop, or Japanese chamomile seeds were sown on the surface layer, covered in soil, then placed in a greenhouse and appropriately watered. Each herbicide was sprayed from the upper part of each plant body (spreading water amount 1000 L / ha) at the beginning of the generation of each grass species (1-2 leaf stage). The test was carried out in triplicate, and the herbicidal effect of each treatment group was visually observed and evaluated on the 1st, 2nd, 3rd, 4th, 5th, 6th and 7th weeks after treatment with the herbicide. The evaluation of the herbicidal effect was defined as 100% complete death and 0% no effect.
The results are shown in Tables 1 to 5.
(A) and (b-1) to (b-12) of the active ingredient display are as described above.

Formulation Example 1
In a mixture of 3 parts by weight of active compound (a), 3 parts by weight of active compound (b-1), 33 parts by weight of bentonite (montmorillonite), 58 parts by weight of talc (talc) and 3 parts by weight of lignin sulfonate, 25 parts by weight of water Part is added and it hatches well, It is made into a granule of 10-40 mesh with an extrusion-type granulator, and it dries at 40-50 degreeC, and is set as a granule.

Formulation Example 2
96 parts by weight of clay mineral particles having a particle size distribution of 0.2 to 2 mm are put in a rotary mixer, and 2 parts by weight of active compound (a) and 2 parts by weight of active compound (b-2) together with a liquid diluent under rotation. Is sprayed to make it even, and then dried at 40 to 50 ° C. to form granules.

Formulation Example 3
Active compound (a) 4 parts by weight, active compound (b-4) 4 parts by weight, ethylene glycol 10 parts by weight, polyoxyalkylene tristyryl phenyl ether 3 parts by weight, xanthan gum 10 parts by weight, 14% silicol oil emulsion 0. A mixture of 5 parts by weight and 68.5 parts by weight of water is thoroughly stirred and then pulverized with a pulverizer (Dynomill KDL type) to obtain an aqueous suspension preparation.

  As shown in the above test examples, the herbicidal composition of the present invention exhibits an excellent control effect against various weeds and an excellent residual effect.

Claims (4)

The active ingredient contains (a) fluphenacet and (b) at least one selected from the group consisting of oxadiargyl, promethrin, imazamox, bentazone, DCMU, pendimethalin, flurtamone, and chloro IPC. Herbicidal composition. 2. The composition according to claim 1, wherein 1 part by weight of flufenacet contains at least one compound selected from the group of compounds that is component (b) within a range of 1/100 to 100 parts by weight. Composition. The (a) 1 part by weight of flufenacet contains at least one compound selected from the compound group as the component (b) within a range of 1/20 part by weight to 10 parts by weight. Composition.   A method for controlling weeds with the herbicidal composition according to claim 1.