JP2005306813A - Mixed herbicidal composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixed herbicidal composition containing a specific herbicidal difluoromethanesulfonylanilide, some known specified herbicidal compound, and a herbicidal compound except the compound, and/or a chemical injury-reducing compound. <P>SOLUTION: The mixed herbicidal composition contains (a) 2-[(4,6-dimethoxypyrimidin-2-yl)hydroxymethyl]-6-methoxymethyl-N-difluoromethanesulfonylanilide, (b) at least one kind of the herbicidal compound selected from the group consisting of mefenacet, anilofos, fentrazamide, oxaziclomefone and oxadiazon, and (c) at least one kind of the herbicidal compound except the (a) and (b), and/or (d) the chemical injury-reducing compound as active ingredients. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mixed herbicidal composition. More specifically, the present invention relates to a mixed herbicidal composition containing a specific herbicidal difluoromethanesulfonylanilide, certain known specific herbicidal compounds, and other herbicidal compounds and / or safener compounds.

Herbicidal difluoromethanesulfonylanilides are already known (see Patent Document 1). These difluoromethanesulfonyl anilides show a good control effect especially on paddy field weeds, but in actual use situations, there may be cases where they do not show a sufficiently satisfactory herbicidal effect against fly. In addition, it is not satisfactory from the viewpoint of an appropriate dosage that satisfies both the weed control spectrum and the occurrence of phytotoxicity on crops at the same time.
JP 2000-44546 A

  The present inventors have now found that the composition shown below exhibits extremely excellent and desirable effects in terms of weed control in paddy fields and phytotoxicity of rice.

Thus, the present invention
(A) 2- [4,6-dimethoxypyrimidin-2-yl) hydroxymethyl] -6-methoxymethyl-N-difluoromethanesulfonylanilide;
(B) at least one herbicidal compound selected from the group consisting of mefenacet, anilophos, fentolazamide, oxadichromemephone, and oxadiazone represented by a general name, and (c) at least other than (a) and (b) above The present invention provides a mixed herbicidal composition comprising one herbicidal compound and / or (d) a safener compound as an active ingredient.

  The above composition of the present invention surprisingly exhibits a herbicidal effect substantially higher than the sum of the effects of each of the active compounds compared to the case where each of the active compounds is used 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 of the present invention, a broad herbicidal spectrum can be obtained, and it is possible to widen the appropriate period for treatment over a long period of time. For example, in paddy rice cultivation, weed generation immediately after transplanting occurs. Excellent herbicidal effect is exhibited no matter what period from the initial stage to the growing stage, and the sustainability of the effect is long-lasting, excellent in residual effect, and excellent herbicidal effects without phytotoxicity to rice can be obtained.

The composition of the present invention preferably has
(A) 2- [4,6-dimethoxypyrimidin-2-yl) hydroxymethyl] -6-methoxymethyl-N-difluoromethanesulfonylanilide;
(B) Generic name: mefenacet, and (c) Generic name or code no. Represented by: AVH-301, benzobicyclone, cumyluron, pyrazoxifene, quinoclamine, sulcotrione, bensulfuron-methyl, bispyrivac-Na, sinosulfuron, cyclosulfamuron, ethoxysulfuron, imazosulfuron, azimusulfuron, mesotrione, At least one herbicidal compound selected from the group consisting of promethrin and pyrazosulfuron-ethyl and / or (d) generic name: consisting of those containing Daimlone as an active ingredient, or (a) 2- [4 6-dimethoxypyrimidin-2-yl) hydroxymethyl] -6-methoxymethyl-N-difluoromethanesulfonylanilide;
(B) at least one herbicidal compound selected from the group consisting of anilophos, fentolazamide, oxadichromephone and oxadiazone represented by a generic name, and (c) a generic name or code no. Represented by the formula: AVH-301, benfrate, bentazone, benzobicyclon, benzophenap, bromobutide, clomeprop, cumyllone, dimetamethrin, MCPB, naproanilide, pyrazolate, pyrazoxifene, sulcotrione, bispyrivac-Na, sinosulfurone, cyclosul At least one herbicidal compound selected from the group consisting of famron, ethoxysulfuron, imazosulfuron, azimusulfuron, mesotrione and promethrin, and / or (d) generic name: it may contain dimulon as an active ingredient it can.

  The component (a) is a known herbicidal compound described in Patent Document 1, and among components (c), AVH-301 is a known compound described in International Publication WO 00/21924. It is a herbicidal compound.

  Other specific compounds of the component (b), component (c) and component (d) are described in, for example, The Pesticide Manual 12th edition (British Crop Protection Council, 2000).

In the composition of the present invention, the mixing ratio of the component (a), the component (b), the component (c), and the component (d) is relatively wide depending on the application time, application region, application method, and the like of the composition. In general, the herbicidal compound as the component (b) is 1 to 100 parts by weight, preferably 3 to 30 parts by weight, with respect to 1 part by weight of the component (a). ) Component herbicidal compound is 0.01-100 parts by weight, preferably 0.1-30 parts by weight, and (d) component safener compound is 0.1-20 parts by weight, preferably Can be used in the range of 1 to 10 parts by weight. More specifically, the use ratio of each of the individual compounds of the component (b), the component (c) and the component (d) can be as follows per part by weight of the component (a).
(B) Component (b-1) Mefenacet: 1 to 50 parts by weight, preferably 10 to 30 parts by weight,
(B-2) Anilophos: 1 to 20 parts by weight, preferably 5 to 10 parts by weight,
(B-3) Fentrazamide: 1 to 10 parts by weight, preferably 2 to 5 parts by weight,
(B-4) Oxadichrome mephone: 0.1 to 10 parts by weight, preferably 1 to 5 parts by weight,
(B-5) Oxadiazone: 1 to 20 parts by weight, preferably 5 to 10 parts by weight,
(C) Component (c-1) AVH-301: 0.1 to 10 parts by weight, preferably 1 to 5 parts by weight,
(C-2) benzobicyclone: 0.1 to 10 parts by weight, preferably 1 to 5 parts by weight,
(C-3) Cumylron: 0.1 to 20 parts by weight, preferably 1 to 10 parts by weight,
(C-4) Pyrazoxifene: 1 to 100 parts by weight, preferably 10 to 50 parts by weight,
(C-5) Quinocamine: 1 to 100 parts by weight, preferably 5 to 20 parts by weight,
(C-6) Sulcotrione: 1 to 10 parts by weight, preferably 2 to 5 parts by weight,
(C-7) Bensulfuron-methyl: 0.1 to 10 parts by weight, preferably 1 to 5 parts by weight,
(C-8) Bispyribac-Na: 0.1 to 10 parts by weight, preferably 1 to 5 parts by weight,
(C-9) Sinosulfuron: 0.1 to 10 parts by weight, preferably 1 to 5 parts by weight,
(C-10) Cyclosulfamlone: 0.1 to 10 parts by weight, preferably 1 to 5 parts by weight,
(C-11) Ethoxysulfuron: 0.1 to 10 parts by weight, preferably 1 to 5 parts by weight,
(C-12) Imazosulfuron: 0.1 to 10 parts by weight, preferably 1 to 5 parts by weight,
(C-13) Azimusulfuron: 0.01 to 10 parts by weight, preferably 0.1 to 5 parts by weight,
(C-14) Mesotrione: 1 to 10 parts by weight, preferably 2 to 5 parts by weight,
(C-15) Promethrin: 1 to 100 parts by weight, preferably 10 to 50 parts by weight,
(C-16) Pyrazosulfuron-ethyl: 0.1 to 10 parts by weight, preferably 1 to 5 times
Amount part,
(C-17) Benfresate: 1 to 20 parts by weight, preferably 5 to 10 parts by weight,
(C-18) Bentazone: 1 to 100 parts by weight, preferably 10 to 50 parts by weight,
(C-19) Benzofenap: 1 to 100 parts by weight, preferably 10 to 50 parts by weight,
(C-20) Bromobutide: 1 to 50 parts by weight, preferably 10 to 30 parts by weight,
(C-21) Chromep: 1 to 20 parts by weight, preferably 5 to 10 parts by weight,
(C-22) Dimetamethrin: 1 to 20 parts by weight, preferably 5 to 10 parts by weight,
(C-23) MCPB: 0.1 to 10 parts by weight, preferably 1 to 5 parts by weight,
(C-24) Naproanilide: 0.1 to 20 parts by weight, preferably 1 to 10 parts by weight,
(C-25) Pyrazolate: 1 to 100 parts by weight, preferably 10 to 50 parts by weight,
(D) Component (d-1) Daimron: 0.1 to 20 parts by weight, preferably 1 to 10 parts by weight.

  The composition of the present invention exhibits a strong control effect against a wide range of weeds. In particular, it can be used as a selective herbicidal composition that exhibits a very effective control effect on paddy weeds and does not cause phytotoxicity on paddy rice.

The composition of this invention can be used with respect to the various weeds which generate | occur | produce in a paddy field. Examples include the following:
Dicotyledonous plants of the following genera : Polygonum, Roppa, Ropela, Lindernia, Bidens, Dopatrium, Esprit The genus Elatine, Gratiola, Linderia, Ludwigia, Oenanthe, Ranunculus, and Destros.

Monocotyledonous plants of the following genera : Echinochloa, Millic genus (Panicum), Papaver genus (Poa), Cyperus genus (Monperoria), Monochoria genus (Fimbristiris), Sidum genus (S) Hario genus (Eleocharis), Firefly genus (Sirpus), Sasiomodaka genus (Alisma), Ibomusa genus (Aneilema), Subuta genus (Elyocaulon), Hiramshiro genus (Potamogeton) and the like.

  Specifically, the composition of the present invention can be used, for example, for the following representative paddy weeds.

Plant name Latin name <br/> Dicotyledonous plant Kikashigusa Rotala indica Koehne
Azena Linderia procumbens Philcox
Ludwigia prostrate Roxburgh
Hiramshiro Potamogeton distinctus A. Benn
Mizokokobe Elatin triandra Schk
Seri Oenanthe javanica
Monocotyledonous Einochloa oryzicola Vasing
Konagi Monochoria vaginalis Presl
Matsubai Eleocharis acicularis L.
Crogwei Eleocharis Kuruguwai Ohwi
Tamagayatsuri Cyperus differentials L.
Cyprinus serotinus Rottboel
Urigawa Sagitaria pygmaea Miq
Heramodaka Alisma canalicatum A. Br. et Bouche
Firefly Sirpus juncoides Roxburgh
However, the use of the composition of the present invention is not limited to these weeds, and can be similarly applied to other weeds.

  When the composition of the present invention is used for controlling paddy field 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, suspension emulsion concentrates, solids (jumbo), floating granules, and polymer substances. The inside microcapsule etc. can be mentioned.

  These preparations can be prepared by methods known per se. For example, each component of the composition of the present invention described above may be used as 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 / or A formulation according to the present invention can be prepared by mixing with 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, etc.), chlorinated aromatic or chlorinated aliphatic hydrocarbons (for example, chlorobenzenes, ethylene chloride, methylene chloride, etc.) ), Aliphatic hydrocarbons [e.g. cyclohexane or paraffins (e.g. mineral oil fractions, minerals and vegetable oils etc.)], alcohols (e.g. butanol, glycols and their ethers or esters etc.), ketones (e.g. And organic solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, etc.) and strong polar 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 granule include, for example, crushed and separated rock (eg, calcite, marble, pumice, gypsum, dolomite, etc.), synthetic particles of inorganic and organic powders, and fine particles of organic substances The body (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 salts of metals such as iron, manganese, boron, copper, cobalt, molybdenum, and zinc.

  In general, the preparation can contain each component constituting the composition of the present invention 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, and can be mixed in a tank at the time of use. Furthermore, other known active compounds, particularly usually paddy fields, can be used. It is also possible to formulate active compounds used in, for example, fungicides, insecticides, plant growth regulators, plant nutrients, soil conditioners and other herbicides.

  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 or granule. The preparations in these forms can be applied to paddy fields by usual methods, for example, liquid spraying, spraying, atomizing, dusting, dusting and the like.

  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, in the range of 0.01 to 5 kg / ha, preferably 0.06 to 4.5 kg / ha, as the total amount of the components (a) to (d).

  The composition of the present invention can be applied not only in the form of a mixed preparation comprising the components (a) to (d) described above, but also the components (a) to (d). It can also be applied simultaneously, successively or sequentially in the form of a single formulation.

  The mixed herbicidal composition of the present invention exhibits an excellent control effect on various paddy weeds and an excellent residual effect as shown in Test Examples described later.

  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: Carrier: 5 parts by weight of acetone Surfactant: 1 part by weight of benzyloxypolyglycol ether The above carrier and surfactant are mixed with 1 part by weight of active compound or a mixture of active compounds at a predetermined mixing ratio. Then, the obtained preparation is diluted with water to prepare a reagent agent having a predetermined dosage.
Test Example 1: Test of effect of herbicide composition on paddy weeds Paddy rice seedlings (quality: 15 cm height) filled with paddy soil in a 1 / 2,000 are pot (25 × 20 × 9 cm) : Nipponbare) 3 plants per plant per plant and transplanted to 2 locations.

  Subsequently, various seeds of Tainubie, Konagi and Firefly were inoculated with tubers of Urikawa and Mitsugayatsuri, and submerged about 2 to 3 cm. Five days after paddy rice transplantation, the surface treatment was carried out with the reagent provided by the above method or a mixture thereof. After the treatment, the water was kept 3 cm in water, and the herbicidal effect was evaluated 4 weeks after the drug treatment according to the following criteria (indicated by%).

100%: complete death 0%: no effect or no phytotoxicity As a result, fentolazamide and dimtron (d-1) as a phytotrazamide and phytotoxic compound from the active compound (a) and herbicidal compound (b) groups are 50 g and 200 g per ha, respectively. And 600 g of the mixed composition, 100% of all tested weeds were killed, while no phytotoxicity was observed in the rice seedlings. Similarly, a mixed composition of 40 g of active compound (a), 60 g of oxadichromemephone from the group of herbicidal compounds (b) and 450 g of dimuron (d-1) as a safener compound; 40 g of active compound (a), herbicidal Mixed composition of mefenacet 1000 g from the compound (b) group and 600 g of Daimlone (d-1) as the safener compound; active compound (a) 40 g, oxadiazone 500 g from the herbicidal compound (b) group and Daimlon as the safener compound (D-1) 600 g of mixed composition; active compound (a) 40 g, mixed composition of oxadiclomephone 60 g from the herbicidal compound (b) group and AVH-301 100 g from the herbicidal compound (c) group; activity Compound (a) 40 g, fentolazamide 200 g from herbicidal compound (b) group, A from herbicidal compound (c) group Mixture composition of VH-301 100 g and Daimlone (d-1) 600 g as a safener compound; active compound (a) 40 g, oxadichromemephone 60 g from herbicidal compound (b) group, herbicidal compound (c) group A mixed composition of 100 g of AVH-301 and 600 g of Daimlone (d-1) as a safener compound; 50 g of active compound (a), 300 g of mefenacet from the herbicidal compound (b) group, and AVH from the herbicidal compound (c) group The mixed composition of -301 200 g and 600 g of Daimlon (d-1) as the safener compound all killed 100% of the weeds tested, while no harmful damage was observed in the rice seedlings.
Formulation Example 1
Active compound (a) 0.6 part by weight, active compound (b-1) 4 part by weight, active compound (c-1) 1.5 part by weight, bentonite (montmorillonite) 32.9 part by weight, talc (talc) 58 25 parts by weight of water is added to a mixture of parts by weight and 3 parts by weight of lignin sulfonate and hatched well. The mixture is granulated to 10 to 40 mesh with an extrusion granulator and dried at 40 to 50 ° C. To do.
Formulation Example 2
90.5 parts by weight of clay mineral particles having a particle size distribution of 0.2 to 2 mm are placed in a rotary mixer, and under rotation, 0.5 part by weight of the active compound (a) and the active compound (b-2) together with the liquid diluent. ) After spraying 3 parts by weight and 6 parts by weight of the safener compound (d-1) to make it uniform, it is dried at 40-50 ° C. to give granules.
Formulation Example 3
1 part by weight of active compound (a), 4 parts by weight of active compound (b-3), 10 parts by weight of safener compound (d-1), 10 parts by weight of ethylene glycol, 3 parts by weight of polyoxyalkylene tristyryl phenyl ether, A mixture of 10 parts by weight of xanthan gum, 0.5 parts by weight of 14% silicol oil emulsion and 61.5 parts by weight of water is thoroughly stirred and then pulverized with a pulverizer (Dynomill KDL type) to obtain an aqueous suspension preparation.
Formulation Example 4
1.5 parts by weight of active compound (a), 12 parts by weight of active compound (b-3), 4 parts by weight of active compound (c-1), 30 parts by weight of sodium lignin sulfonate, 17.5 parts by weight of bentonite and calcination 35 parts by weight of diatomaceous earth powder is thoroughly mixed, and water is added to this and kneaded well. Then, it is extruded and dried with a 0.3 mm screen to obtain a granular wettable powder.

Claims (4)

(A) 2- [4,6-dimethoxypyrimidin-2-yl) hydroxymethyl] -6-methoxymethyl-N-difluoromethanesulfonylanilide;
(B) at least one herbicidal compound selected from the group consisting of mefenacet, anilophos, fentolazamide, oxadichromemephone, and oxadiazone represented by a general name, and (c) at least other than (a) and (b) above A mixed herbicidal composition comprising one herbicidal compound and / or (d) a safener compound as an active ingredient. (A) 2- [4,6-dimethoxypyrimidin-2-yl) hydroxymethyl] -6-methoxymethyl-N-difluoromethanesulfonylanilide;
(B) Generic name: mefenacet, and (c) Generic name or code no. AVH-301, benzobicyclon, cumyluron, pyrazoxifene, quinoclamine, sulcotrione, bensulfuron-
At least one herbicidal compound selected from the group consisting of methyl, bispyribac-Na, sinosulfuron, cyclosulfamuron, ethoxysulfuron, imazosulfuron, azimusulfuron, mesotrione, promethrin and pyrazosulfuron-ethyl and / or (d) generic name The mixed herbicidal composition according to claim 1, comprising Daimlon as an active ingredient. (A) 2- [4,6-dimethoxypyrimidin-2-yl) hydroxymethyl] -6-methoxymethyl-N-difluoromethanesulfonylanilide;
(B) at least one herbicidal compound selected from the group consisting of anilophos, fentolazamide, oxadichromephone and oxadiazone represented by a generic name, and (c) a generic name or code no. Represented by the formula: AVH-301, benfrate, bentazone, benzobicyclon, benzophenap, bromobutide, clomeprop, cumyllone, dimetamethrin, MCPB, naproanilide, pyrazolate, pyrazoxifene, sulcotrione, bispyrivac-Na, sinosulfurone, cyclosul 2. At least one herbicidal compound selected from the group consisting of famron, ethoxysulfuron, imazosulfuron, azimusulfuron, mesotrione and promethrin and / or (d) Generic name: Daimlon as an active ingredient Herbicide composition. (A) 2- [4,6-dimethoxypyrimidin-2-yl) hydroxymethyl] -6-methoxymethyl-N-difluoromethanesulfonylanilide;
(B) at least one herbicidal compound selected from the group consisting of mefenacet, anilophos, fentolazamide, oxadiclomephone, and oxadiazone, and (c) at least one herbicidal compound other than (a) and (b) above and (D) A method for weeding paddy field weeds comprising applying a safener compound to paddy fields simultaneously, successively or sequentially.