JP2009215169A - Bryophyte-controlling composition for lawn and method for using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bryophyte-controlling composition for a lawn, controlling the bryophytes without developing phytotoxicity to a western grass such as bent grass as a means for controlling the bryophytes growing on the lawn, and a method for applying the same to exhibit an effect synergistically. <P>SOLUTION: This bryophyte-controlling composition for the lawn contains ≥1 compound selected from protoporphyrinogen oxidase inhibitors and ≥1 compound selected from acetolactic acid synthase inhibitors as active ingredients, and a method for applying the same. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a moss for lawn, comprising as an active ingredient one or more compounds selected from protoporphyrinogen oxidase inhibitors and one or more compounds selected from acetolactate synthase inhibitors Control composition and method of use thereof, in particular, no phytotoxicity to bentgrass, and protoporphyrinogen oxidase inhibitor and acetolactate synthase inhibitor synergistically exhibit moss for lawn The present invention relates to a composition and a method for using the same.

In recent years, the damage of bryophytes has increased in the golf course green. The bryophytes that appear on the green are not only aesthetically pleasing and significantly reduce the putting quality, but also suppress the growth of the green turf and cause it to die. The bryophytes that appear on the green are mainly Gingoke, a mate of the moss, which can grow in dry places that are exposed to direct sunlight. Therefore, water that is regularly sprinkled and fertilized is a good growth place for the moss that absorbs moisture and nutrients from the soil surface and grows.
Conventional control of bryophytes includes cultivating methods and chemical methods. In the former case, it is important to avoid excessive irrigation, to improve drainage and to dry the soil surface as much as possible. However, bentgrass is vulnerable to drying, and there is a limit to irrigation limitation, which is not a fundamental solution. The latter is, for example, spraying a drug effective on bryophytes, and the only applicable crop is Japanese turf (Korai Shiba), but the moss can be controlled using the herbicide ACN (Kinochuramin) (for example, Non-Patent Document 1). And carfentrazone ethyl agent is known to have an effect for controlling “moss” in western grass (bentgrass) (see, for example, Non-Patent Document 2). Moreover, it is known that algae and bryophytes can be controlled without chemical damage using certain amine salts (see, for example, Patent Document 1).

  One active ingredient used in the present invention, pyraflufenethyl, is a known compound and has been found to be useful as a herbicide (see, for example, Patent Document 2 and Non-Patent Document 3). . In addition, halosulfuron methyl, ethoxysulfuron, florasulam, cyclosulfamuron, imazosulfuron, and synosulfuron, which are active ingredients used in combination with other active ingredients, are all known for use as herbicides ( For example, see Non-Patent Document 3.) For herbicide use, a technique for controlling weeds using a combination of a pyrazole compound containing pyraflufenethyl and a sulfonylurea herbicide or a phenoxy fatty acid herbicide is known (see, for example, Patent Document 3). .)

JP 10-291905 A Japanese Patent Laid-Open No. 3-163063 JP-A-4-59706 Green Agricultural Chemicals Directory 2003 Published by Green Safety Association Introduction of recent registration of agricultural chemicals FY2006 (January to June) http://www.iskweb.co.jp/ibj/shidou/touroku_9.htmIshihara Bioscience Co., Ltd. The Pesticide Manual (The Pesticide Manual, 13th edition, published by BRITISH CROP PROTECTION COUNCIL, 2003)

  As a means for controlling bryophytes generated on the lawn, there has been a demand for an excellent chemical method that does not cause phytotoxicity on the lawn, which supplements or replaces the conventional cultivating method. Existing chemical methods did not sufficiently cover the effects and phytotoxicity at the same time, and could only be used in limited situations. The present invention relates to a moss control composition for turf that can control bryophytes without causing phytotoxicity to turf grasses such as bentgrass, and a moss control composition for lawn that exhibits synergistic effects. The purpose of this is to provide a method of use.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have found the present invention, found that the intended purpose is achieved, and have completed the present invention.

  That is, the present invention comprises, as an active ingredient, one or more compounds selected from protoporphyrinogen oxidase inhibitors and one or more compounds selected from acetolactate synthase inhibitors as active ingredients. The present invention relates to a composition and a method for using the same.

  By using the lawn bryophyte control composition of the present invention, moss can be effectively controlled without causing any phytotoxicity even when turf that is sensitive to chemicals such as bentgrass and is susceptible to phytotoxicity is grown. can do. Since two types of herbicides having different functions are combined to exert a synergistic effect, the moss has a higher effect and can be applied to the turf without causing phytotoxicity. While maintaining high turf quality, the total amount of drug dropped can be saved.

Next, the moss control composition for turf of the present invention and the production method thereof will be specifically described.
As a specific active ingredient, for example, as a protoporphyrinogen oxidase inhibitor, for example, flumipropine (generic name) full microlac pentyl (generic name) flumioxazin (generic name) carfentrazone ethyl (generic name) Sulfentrazone (generic name) azaphenidine (generic name) fluthiaset methyl (generic name) thiadimine (generic name) oxadiazone (generic name) oxadiargyl (generic name) sinidone ethyl (generic name) butaphenacyl (generic name) pyraflufenethyl (generic name) Common names: Chlorphthalim (generic name) Nitrophen (generic name), biphenox (generic name), oxyfluorfen (generic name), acifluorfen (generic name), fomesurfen (generic name) and other diphenyl ether compounds Limited to these Not to. Particularly preferred is pyraflufen ethyl.

Examples of the acetolactate synthase inhibitor include sulfonamide herbicides such as full carbazone, propoxycarbazone or amicarbazone, sulfonylurea herbicides such as metsulfuron, indosulfuron, amidosulfuron, foramsulfuron, chlor. Sulfuron, sulfometuron methyl, chlorimuron ethyl, triasulfuron, oxasulfuron, tribenuron ethyl, prosulfuron, ethamethsulfuron methyl, triflusulfuron methyl, thifensulfuron methyl, fluzasulfuron, rimsulfuron , Nicosulfuron, flupirsulfuron, bensulfuron methyl, pyrazosulfuron ethyl, imazosulfuron, sulfosulfuron, synosulfuron, azimusulfuron, metsulfuron methyl, halosulfuron Til, ethoxysulfuron, cyclosulfamuron or iodosulfuron, imidazolinone herbicides such as imazametabenz, imazapyr and salts thereof, imazapic and salts thereof, imazaquin and salts thereof, imazetapill and salts thereof, imazamox and salts thereof Although it is mentioned, it is not limited to these. Preference is given to using one or more compounds selected from halosulfuron methyl, ethoxysulfuron, flora slam, cyclosulfamuron, imazosulfuron or sinosulfuron. More preferred is ethoxysulfuron methyl, cyclosulfamuron or imazosulfuron. The salt may be an inorganic salt such as sodium salt or potassium salt, or a salt with an organic base such as pyridine salt or ammonium salt. These herbicides are the main active ingredients of the present invention. As other active ingredients, other herbicides, insecticides, fungicides and the like can be blended as long as no phytotoxicity occurs.
These active ingredients are, for example, compounds described in known literatures such as the Pesticide Manual (Thirst Manual Manual Edition Edition).

  As the active ingredient, one or more of the above herbicides can be blended simultaneously. Moreover, the compounding quantity can be mix | blended in arbitrary ratios according to a dosage form with respect to the total amount of moss control compositions for lawns, and it can use it, selecting suitably from the range of 0.01 to 80 weight%. Preferably 0.1 to 50% by weight, particularly preferably 1 to 20% by weight. In addition to the above herbicides, insecticides, bactericides, and the like can be added as other active ingredients.

  Examples of the binder that can be used in producing the lawn bryophyte control composition of the present invention include natural, semi-synthetic, and synthetic polymers. , Starch, arabic gum, tragacanth gum, guar gum, mannan, pectin, sorbitol, xanthan gum, dextran, gelatin, casein and the like. Examples of the semi-synthetic system include dextrin, soluble starch, oxidized starch, pregelatinized starch, methyl cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, and hydroxypropyl cellulose. Examples of the synthetic system include polyvinyl alcohol, polyacrylamide, polyvinyl pyrrolidone, sodium polyacrylate, ethylene-acrylic acid copolymer, maleic anhydride copolymer, and polyethylene glycol. However, it is not limited to these. Moreover, these can be used individually by 1 type, or it can also use 2 or more types together, The addition amount is 0.1 to 20 weight% normally with respect to the total amount of moss control compositions for lawns. Preferably, it is 0.3 to 10% by weight.

  The solid carrier that can be used in producing the lawn bryophyte control composition of the present invention is classified into a water-insoluble solid carrier and a water-soluble solid carrier, and examples of the water-insoluble solid carrier include clay. , Calcium carbonate, talc, bentonite, calcined diatomaceous earth, unfired diatomaceous earth, hydrous silicic acid, cellulose, pulp, rice bran, wood powder, kenaf powder and the like. Examples of the water-soluble solid carrier include inorganic salts such as ammonium sulfate, sodium chloride, and potassium chloride, sugars such as glucose, sucrose, fructose, and lactose, urea, urea formalin condensate, organic acid salt, and water-soluble amino acids. Etc. These solid carriers may be used alone or in combination of two or more. The amount of these solid carriers to be added is usually 0.5 to 99.79% by weight, preferably 20 to 98% by weight, based on the total amount of the lawn bryophyte control composition.

  Further, the lawn bryophyte control composition of the present invention can maximize the medicinal effects of the contained pesticidal active ingredient, or improve the quality of the lawn bryophyte control composition, if necessary. In addition, various auxiliary components such as a surfactant, a solvent, a grinding aid, an absorbent, a decomposition inhibitor, and a pigment are added. Further, it is necessary to determine the selection and blending ratio so as to match the properties of the active ingredients used.

  Surfactants that can be added to the composition of the present invention include nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene polystyryl phenyl ether, polyoxyethylene alkyl ester, polyoxyethylene sorbitan alkyl ester, and alkylnaphthalene sulfone. Illustrative of anionic surfactants such as acid salts, alkyl sulfates, polyoxyethylene polystyryl phenyl ether sulfate, polyoxyethylene alkyl ether sulfonate, polyoxyethylene polystyryl phenyl ether phosphate, dioctyl sulfosuccinate However, depending on circumstances such as the turf growth period and the environment, it may be necessary to adjust the type and blending amount so as not to cause phytotoxicity.

  The solvent is not particularly limited as long as it does not cause phytotoxicity. For example, water, alcohols (for example, methanol, ethanol, isopropanol, butanol, cyclohexanol, ethylene glycol, diethylene glycol, propylene glycol, hexylene glycol, polyethylene) Glycol, polypropylene glycol, etc.), ketones (eg, methyl isobutyl ketone, diisobutyl ketone, cyclohexanone, γ-butyrolactone, etc.), ethers (eg, cellosolve, etc.), aliphatic hydrocarbons (eg, kerosene, mineral oil, etc.), aromatic carbonization Hydrogen (for example, xylene, solvent naphtha, alkylnaphthalene, etc.), esters (for example, diisopropylpropyl phthalate, dibutyl phthalate, dioctyl phthalate, adipic acid ether) Ter, etc.), amides (eg, dimethylformamide, diethylformamide, dimethylacetamide, etc.), dimethyl sulfoxides, nitrogen-containing carriers (N-alkylpyrrolidone, etc.), or fats and oils (eg, rapeseed oil, soybean oil, olive oil, corn oil) Coconut oil, castor oil, etc.).

  Examples of the grinding aid include carriers made from ores such as bentonite, zeolite, talc, acid clay, activated clay, synthetic carrier such as white carbon (silica), plant carriers such as saccharides, dextrin and powdered cellulose, anions Surfactants such as ionic surfactants, other organic compounds, resins and the like can be used.

  Absorbents are used to pulverize and premix liquid agrochemical ingredients such as oil, and absorb the liquid components and give the fluidity of the granules. Mineral, plant or chemical fine powder is added. The absorbent is also a so-called carrier (a bulking agent), and a carrier having a high oil absorption capacity is suitable as a powdering aid. For example, oil-absorbing fine powders such as white carbon, diatomaceous earth, and microcrystalline cellulose can be used.

Examples of the decomposition inhibitor include antioxidants such as butylhydroxytoluene (BHT) or butylhydroxyanisole (BHA), hydroquinone ultraviolet absorbers, salicylic acid ultraviolet absorbers, benzophenone ultraviolet absorbers, and benzotriazole ultraviolet absorbers. Or ultraviolet absorbers, such as a cyanoacrylate type ultraviolet absorber, can be used.
The dye is not particularly limited, and for example, red 202, iron oxide, titanium oxide and the like can be used.

  In addition, the lawn bryophyte control composition of the present invention includes, as necessary, nitrogen content such as urea, nitrate, ammonium salt, plant hormones such as choline, cytokinin, gibberellin, folic acid, iron, Metal elements such as magnesium, calcium, silicic acid, manganese, molybdenum, boron, zinc, copper, sulfur, and potassium, organic acids such as citric acid, acetic acid, succinic acid, and aspartic acid, phosphoric acid, and the like may be added. It is also possible to adjust the pH by the above addition.

In the present invention, the above components and additives to be blended as needed are blended as appropriate, and emulsions, powders, granules, wettable powders, granular wettable powders or granular water solvents, etc. are produced by ordinary methods. Can do. For example, after mixing the exemplified agricultural chemical active ingredients, binder, solid carrier, surfactant and additives to be blended as necessary, kneading and kneading with water, etc., and granulating with an extrusion granulator. To produce an agrochemical granular formulation. Although there is no restriction | limiting in the model of an extrusion granulator, a screw type extrusion granulator, a basket type extrusion granulator, a roll type extrusion granulator, a blade type extrusion granulator, a twin dome granule etc. can be illustrated. The small hole diameter of the screen attached to the extrusion granulator is 0.1 to 5 mm, preferably 0.3 to 2 mm.
After extrusion granulation, the resulting buckwheat-like granulated product is adjusted to an appropriate length and then dried to obtain an agrochemical granular formulation, but there is no limitation on the method.
Alternatively, the extruded granulated lawn moss control composition can be processed into a spherical or elliptical shape using a device such as a Malmerizer, and coated with a resin or the like to obtain an agrochemical granular preparation.

  As the moss to be used, for example, it is effective for controlling moss and moss, moss and moss, and is particularly effective for controlling moss and other moss.

  When using the lawn bryophyte control composition of the present invention, it may be prepared and used in an appropriate dosage form according to the purpose in accordance with conventional methods on agricultural chemical formulations, such as a solid carrier, a liquid carrier, a surfactant, In addition, if necessary, it may be mixed with an auxiliary agent or the like to prepare a dosage form such as a granule, a wettable powder, a powder, a flowable, an emulsion or a liquid.

  Examples of turf to which the composition for controlling moss for turf of the present invention can be applied include Western turf such as Kentucky Bluegrass, Bentgrass, Perennial Ryegrass, Tall Fescue, Bermuda Grass, Tifton, Korai turf, Hime Korai turf, Wild turf It can be applied to Japanese turf such as velvet turf, but is not limited thereto. Preferred are Western turf such as Kentucky Bluegrass, Bentgrass, Perennial Ryegrass, Tall Fescue, Bermuda Grass, and Tifton.

The lawn bryophyte control composition of the present invention is particularly suitable for use on lawns. Examples of such scenes include golf courses, parks, sports playgrounds, gardens, riverbed green spaces, roads, building sites, and the like. Can be mentioned. It can also be used to control bare land in similar places, orchards, algae, orchards such as orchards, forests, forests, and constructed forests. It can also be used on paddy paddy fields, fallow land, etc. in agricultural land. The present invention can be applied not only to these aspects but also to the target bryophytes everywhere depending on the purpose in order to control undesirable bryophytes.

  As an application method, it can be applied by the same method as a conventional lawn bryophyte control composition, for example, direct spraying of granules, etc. by hand, human-powered sprayer, electric sprayer, back shape Examples thereof include a power spreader, a traveling power spreader, a tractor-mounted spreader, and a method using an aerial spreader such as a manned or unmanned helicopter.

The application amount when applying the lawn moss control composition of the present invention is 0.0001 to 20 g, preferably 0.001 g to 5 g per square meter as an active ingredient.

  Hereinafter, specific examples of the present invention will be described, but the present invention is not limited to these examples. In the following Examples and Comparative Examples, “part” means “part by weight”.

Production Example 1
Pyraflufenethyl 0.5 parts Ethoxysulfuron 4.5 parts Bentonite / clay mixed powder 90 parts lignin sulfonate 5 parts or more uniformly mixed, kneaded with an appropriate amount of water, granulated and dried And granulate.

Production Example 2
Piraflufenethyl 1 part Imazosulfuron 20 parts Kaolin, synthetic highly dispersed silicic acid 74 parts Mixture of polyoxyethylene nonylphenyl ether and calcium alkylbenzenesulfonate 5 parts The above is uniformly mixed and ground to obtain a wettable powder.

Production Example 3
Pyraflufenethyl 0.5 parts Cyclosulfamlone 9.4 parts Calcium lignin sulfonate 5 parts Sodium lauryl sulfate 3 parts Xanthan gum 0.2 parts White carbon 5 parts Water 76.9 parts To make a suspension.

Production Example 4
Pyraflufenethyl 0.2 parts Chlorphthalim 20 parts Polyethylene glycol dialkyl aryl ether sulfate
5 parts calcium lignin sulfonate 10 parts diatomaceous earth 64.8 parts After mixing and grinding well, add a small amount of water, knead and mix, granulate with an extrusion granulator, dry and granulate wettable powder And

The lawn moss control composition was tested by the following method.
Test Example 1: The test site is a golf course tee ground (turf type is Kentucky blue grass or bent grass). Treatment is foliage spraying, water volume 150 ml / m ² (spreading agent approach BI, Kao Corp. 2000 times added). 1 ward 2m ² (2 repetitions). It is conducted in a separate test in autumn (turf species are Kentucky bluegrass) or summer (turf species are bentgrass). Survey is the death rate of moss individuals. The test dose is the lowest registered dose.
Test Example 2: Golf course tee ground (turf type is Kentucky bluegrass or bentgrass). Treatment is foliage spraying, water volume 150ml / m ² (spreading agent approach BI is added 2000 times). 1 ward 2m ² (2 repetitions). A separate test is conducted in autumn (turf species are Kentucky bluegrass) or summer (turf species are bentgrass). Survey is the death rate of moss individuals. The test dose excluding imazosulfuron is the lowest registered dose.

In the above test examples, the activity was evaluated visually according to the following criteria.
Moss killing effect 5: 100% withering,
4: 80% to 99% withering,
3: 60% to 79% death,
2: 40% to 59% withering,
1: 20% to 39% withering,
0: 20% death

  In the following table, FL represents flowable, DF represents granule wettable powder, SC represents flowable, and WP represents wettable powder. The notation of FL and SC is described according to the product name. ET is an abbreviation for pyraflufenethyl. Pyraflufenethyl is a compound known as development code ET-751.

結果の概略
試験例１より、ピラフルフェンエチル単用区に比べ、殺コケ効果が高かった除草剤はエトキシスルフロンメチル、フロラスラム、シクロスルファムロン、イマゾスルフロン、シノスルフロン、クロルフタリム（処理後５０日以上）で、その程度は作用機作がＡＬＳ阻害であるＳＵ系のエトキシスルフロンメチル、シクロスルファムロン、イマゾスルフロンに顕著である。
試験２より、殺コケ効果はＭＣＰＰを除く光要求型及びスルホニルウレア系除草剤の除草剤に認めるが、その程度はさほど強くない。
したがって、試験１に認めた高い殺コケ効果はピラフルフェンエチル混用による相乗効果であり、その作用はスルホニルウレア系除草剤に顕著である。しかし、同系統のハロスルフロンメチルでは相乗効果は供試薬量では認められず、光要求型でも他の系統のクロルフタリムでは供試薬量以上が必要であった。

Summary of Results From Test Example 1, the herbicides with higher mossicidal effect compared to the single-use area of pyraflufenethyl were ethoxysulfuron methyl, florasulam, cyclosulfamuron, imazosulfuron, sinosulflon, chlorphthalim (more than 50 days after treatment) However, the degree is remarkable in SU-based ethoxysulfuron methyl, cyclosulfamuron and imazosulfuron whose action mechanism is ALS inhibition.
From Test 2, the moss killing effect is observed in the light-requiring type excluding MCPP and the herbicide of sulfonylurea herbicide, but the degree is not so strong.
Accordingly, the high mossicidal effect observed in Test 1 is a synergistic effect by the combined use of pyraflufenethyl, and its action is remarkable for sulfonylurea herbicides. However, synergistic effects were not observed in the same amount of halosulfuron methyl in the same strain, and the amount required for the other chlorphthalim in the other strains was more than that required for the light-requiring type.

Claims (5)

A lawn moss control composition comprising, as active ingredients, one or more compounds selected from protoporphyrinogen oxidase inhibitors and one or more compounds selected from acetolactate synthase inhibitors. The lawn moss control composition according to claim 1, wherein the one or more compounds selected from a protoporphyrinogen oxidase inhibitor are pyraflufenethyl. The one or more compounds selected from an acetolactate synthase inhibitor are one or more compounds selected from halosulfuron methyl, ethoxysulfuron, florasulam, cyclosulfamuron, imazosulfuron, or synosulfuron. Turf moss control composition. The lawn moss control composition according to any one of claims 1 to 3, wherein the lawn is used for western lawn. An effective amount is applied to lawn ground, The usage method of the moss control composition for lawns of any one of Claim 1 thru | or 4 characterized by the above-mentioned.