JPH11269013A - Herbicidal composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a herbicidal composition capable of improving herbicidal effects and efficiently controlling various kinds of noxious weeds by including a specific herbicidally active compound and a specific amount of a nitrogen fertilizer therein. SOLUTION: This herbicidal composition is obtained by including (A) (i) a phenoxyacid-based herbicidally active compound and/or (ii) an aromatic carboxylic acid-based herbicidally active compound and (B) a nitrogen fertilizer in an amount of preferably 0.01-5 pts.wt., more preferably 0.1-2 pts.wt. based on 1 pt.wt. ingredient A and expressed in terms of nitrogen atom so as to provide an application amount of the nitrogen element of 10-1,000 g based on 10 ares. The ingredient (i) is preferred as the ingredient A and a salt of (4- chloro-2-methylphenoxy)-acetic acid [MCP (common name)], an ester of the MCP, a salt of 2-(4-chloro-methylphenoxy)-propanoic acid [MCPP (common name)], a salt of [(3,5,6-trichloro-2-pyridinyl)oxy]-acetic acid [triclopyr (common name)], an ester of the triclopyr, etc., are preferably used as the ingredient (i). Ammonium sulfate, ammonium nitrate, etc., are preferably used as the ingredient B. The composition is especially preferably applied to a turf.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a herbicidal composition containing one or more phenoxyacid-based herbicidally active compounds and aromatic carboxylic acid-based herbicidally active compounds and a nitrogen fertilizer, and a herbicidal method using both of them at the same time. It is about.

[0002]

BACKGROUND ART Over the years of research and development of herbicides, a wide variety of chemicals have been put into practical use, and these herbicides have contributed to labor saving in weed control work and improvement in productivity of agricultural and horticultural crops. Phenoxy acid-based herbicidal compounds and aromatic carboxylic acid-based herbicidal compounds exhibit excellent herbicidal effects at relatively low doses and have high safety against useful plants such as crops and turf. Used in the scene.

[0003]

However, the effect on some weeds may be insufficient, or the effect may be insufficient depending on the weather conditions after application, and the herbicidal effect may be further improved. Requested.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies in order to solve the above-mentioned problems, and as a result, have found that a small amount of at least one selected from phenoxy acid-based herbicidally active compounds and aromatic carboxylic acid-based herbicidally active compounds. When nitrogen fertilizer is applied at the same time,
The present inventors have found that the herbicidal effect is improved as compared with the case where the herbicidal active compound is applied alone, and that various harmful weeds can be efficiently controlled, and the present invention has been completed.

That is, the present invention provides the following [1] to [10]
It is about. [1] One or more selected from a phenoxy acid-based herbicidal active compound and an aromatic carboxylic acid-based herbicidal active compound and a nitrogen fertilizer, and the application rate of the nitrogen element in the nitrogen fertilizer is 10 to 1000 g per 10 ares. A herbicidal composition comprising: [2] The herbicidal composition according to [1], which is applied to turf. [3] The nitrogenous fertilizer contains 0.01 to 5 parts by weight of nitrogen element per 1 part by weight of at least one selected from a phenoxy acid herbicidal active compound and an aromatic carboxylic acid herbicidal active compound. Herbicidal composition. [4] The herbicidal composition according to [1], wherein at least one selected from a phenoxy acid herbicidal compound and an aromatic carboxylic acid herbicidal compound is a phenoxy acid herbicidal compound. [5] The herbicidal composition according to [4], wherein the phenoxyacid herbicidally active compound is a salt of MCP or an ester thereof, a salt of MCPP or a salt of triclopyr or an ester thereof. [6] Simultaneously applying at least one selected from a phenoxy acid-based herbicidal active compound and an aromatic carboxylic acid-based herbicidal active compound and a nitrogen fertilizer, and the application rate of the nitrogen element in the nitrogen fertilizer is 10 to 1000 g per 10 ares. A weeding method characterized by the following. [7] The method for weeding according to [6], which is applied to turf. [8] 0.01 to 5 parts by weight of a nitrogen element in a nitrogen fertilizer is applied per 1 part by weight of at least one selected from a phenoxy acid herbicidal active compound and an aromatic carboxylic acid herbicidal active compound. Weeding method.

[9] The herbicidal method according to [6], wherein at least one selected from a phenoxy acid herbicidally active compound and an aromatic carboxylic acid herbicidal active compound is a phenoxy acid herbicidal active compound. [10] The phenoxy acid herbicidal active compound is a salt of MCP or an ester thereof, a salt of MCPP or a salt of triclopyr or an ester thereof.

[9] The method for weeding described in [9].

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The nitrogen fertilizer used in the present invention is not particularly limited as long as it contains a nitrogen element. For example, nitrite, lime nitrogen, ammonium sulfate, ammonium nitrate, salt ammonium, urea, phosphorus ammonium, IB
And ureaform, but ammonium sulfate and ammonium nitrate are preferred. Further, a chemical fertilizer or a compound fertilizer containing a nitrogen element may be used.

[0007] The application rate of nitrogen element in the nitrogen fertilizer used in the present invention is smaller than that of ordinary fertilization, and is 10 to 1000 g per 10 ares, preferably 20 to 500 g.
And more preferably 40 to 250 g. When the application rate of the nitrogen element in the nitrogen fertilizer is too small, the improvement of the herbicidal effect is not recognized, and when it is too large, the improvement of the herbicidal effect corresponding to the added amount is not recognized, and the nitrogen element does not work effectively.

The phenoxy acid herbicidally active compounds used in the present invention include, for example, salts of 2,4PA (generic name),
2,4PA ester, MCP (generic name) salt, MCP
Ester, MCPB (generic name) salt, MCPB ester, MCPP (generic name) salt, triclopyr (triclo
pyr / generic name) salt, triclopyr ester, phenothiol (MCPA-thioethyl / generic name), clomeprop (clomeprop / generic name) and naproanilide (naproan
hormone-type herbicidal active compounds such as ilide / generic name, fenoxapropethyl / generic name, fluazifopbutyl / fluazifop / generic name
And non-hormonal herbicidally active compounds such as quizalofopethyl (common name). As the aromatic carboxylic acid-based herbicidally active compound, for example, MD
BA (generic name) and picloram (picloram / generic name)
And other hormone-type herbicidal active compounds, imazapyr (imazapyr / common name), imazaquin ammonium salt (ima
zaquin ammonium / generic name), dithiopyr /
Non-hormonal herbicidally active compounds such as generic name) and TCTP (generic name).

The phenoxy acid-based herbicidally active compound and the aromatic carboxylic acid-based herbicidal compound of the present invention are selected from the group consisting of:
As the species or more, the above-mentioned hormone-type herbicidally active compounds or phenoxy acid-based herbicidally active compounds are usually used. From the viewpoint of herbicidal effect, phenoxy-acid-based hormone-type herbicidally active compounds are preferable, and MCP salts, MCP salts Esters, salts of MCPP, salts of triclopyr and esters of triclopyr.

The herbicidal composition and the herbicidal method of the present invention exhibit a suitable herbicidal effect only when the herbicidal active compound is selected from one or more selected from phenoxy acid-based herbicidally active compounds and aromatic carboxylic acid-based herbicidally active compounds. And 0.01 to 5 parts by weight of nitrogen element in the nitrogen fertilizer, and more preferable herbicidal effect can be expected when 0.1 to 2 parts by weight is applied.

The herbicidal composition and method of the present invention are applicable to the control of various weeds in agricultural lands such as paddy fields, fields and orchards, turf such as golf courses, and non-agricultural lands such as sports grounds, open lands and track ends. But it is preferably applied to turf. In addition, any of the treatment methods of soil treatment, soil mixing treatment and foliage treatment can be applied.

The herbicidal composition and the herbicidal method of the present invention can be applied at any time before and after germination of seeds of various weeds. The nitrogen fertilizer and one or more selected from the phenoxyacid-based herbicidal active compound and the aromatic carboxylic acid-based herbicidal active compound of the present invention may be applied at exactly the same time or separately if they are close in time. Any case is included in the herbicidal method of the present invention. When they are separately treated, the application time interval is usually within 3 days, preferably within 1 day from the viewpoint of the herbicidal effect.

When a nitrogen fertilizer is used as a mixture with at least one selected from a phenoxy acid herbicidal active compound and an aromatic carboxylic acid herbicidal active compound, it may be mixed at the time of application or at the time of preparation. When applying a nitrogen fertilizer with one or more selected from the phenoxyacid-based herbicidally active compounds and the aromatic carboxylic acid-based herbicidally active compounds of the present invention, they are usually mixed with a suitable solid carrier or liquid carrier, and if necessary, further mixed with a surfactant. Agents, penetrants, spreading agents, thickeners, antifreezing agents, binders, anti-caking agents, disintegrating agents, anti-decomposition agents, etc. to add solutions, emulsions, wettable powders, aqueous solvents, granular water It can be put to practical use in preparations of any dosage form, such as Japanese preparations, aqueous solvents for granules, suspensions, emulsions, suspoemulsions, microemulsions, powders, granules and gels. At this time, it is also possible to simultaneously use a mixture with a plurality of other herbicides, insecticides, fungicides, plant growth regulators, fertilizers and the like. Further, from the viewpoint of labor saving and improvement of safety, the above-mentioned preparation of any dosage form can be provided by being enclosed in a water-soluble package.

Examples of the solid carrier include natural minerals such as quartz, kaolinite, pyrophyllite, sericite, talc, bentonite, acid clay, attapulgite, zeolite and diatomaceous earth, calcium carbonate, ammonium sulfate, sodium sulfate and potassium chloride. And the like, synthetic silicic acid and synthetic silicate. As liquid carriers, for example, alcohols such as ethylene glycol, propylene glycol and isopropanol,
Aromatic hydrocarbons such as xylene, alkylbenzene and alkylnaphthalene; ethers such as butyl cellosolve; ketones such as cyclohexanone; esters such as γ-butyrolactone; acid amides such as N-methylpyrrolidone and N-octylpyrrolidone; Vegetable oils such as soybean oil, rapeseed oil, cottonseed oil and castor oil and water.

These solid and liquid carriers may be used alone or in combination of two or more. As a surfactant,
Nonionic properties such as polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene styryl phenyl ether, polyoxyethylene polyoxypropylene block copolymer, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, and polyoxyethylene sorbitan fatty acid ester Surfactant, alkyl sulfate, alkyl benzene sulfonate, lignin sulfonate, alkyl sulfosuccinate, naphthalene sulfonate, alkyl naphthalene sulfonate, salt of naphthalene sulfonic acid formalin condensate, alkyl naphthalene sulfonic acid formalin Salts of condensates, polyoxyethylene alkylaryl ether sulfates and phosphates, polyoxyethylene styryl phenylate Anionic surfactants such as sulfuric acid and phosphates, polycarboxylates and polystyrene sulfonates, cationic surfactants such as alkylamine salts and alkylquaternary ammonium salts, and amphoteric surfactants such as amino acid type and betaine type Is mentioned.

The content of these surfactants is not particularly limited, but is preferably in the range of usually 0.05 to 20 parts by weight based on 100 parts by weight of the preparation of the present invention. These surfactants may be used alone or in combination of two or more. Next, formulation examples of the preparation will be described. However, the present invention is not limited only to these. In the following formulation examples, “HB” means at least one selected from phenoxy acid-based herbicidally active compounds and aromatic carboxylic acid-based herbicidally active compounds, and “parts” means parts by weight.

[Wettable powder] HB / nitrogen fertilizer 0.1 to 80 parts Solid carrier 5 to 98.9 parts Surfactant 1 to 10 parts Others 0 to 5 parts Others include, for example, an anti-caking agent and a decomposition inhibitor. You.

[Emulsion] HB / nitrogen fertilizer 0.1 to 30 parts Liquid carrier 45 to 95 parts Surfactant 4.9 to 15 parts Others 0 to 10 parts Others include, for example, spreading agents and decomposition inhibitors.

[Suspension] HB / nitrogen fertilizer 0.1 to 70 parts Liquid carrier 15 to 98.89 parts Surfactant 1 to 12 parts Others 0.01 to 30 parts Others include, for example, an antifreezing agent and a thickener.

[Water dispersible granules] HB / nitrogen fertilizer 0.1 to 90 parts Solid carrier 0 to 98.9 parts Surfactant 1 to 20 parts Others 0 to 10 parts Others include, for example, a binder and a decomposition inhibitor.

[Solution] HB / nitrogen fertilizer 0.01 to 70 parts Liquid carrier 20 to 99.99 parts Others 0 to 10 parts Others include, for example, an antifreezing agent and a spreading agent.

[Granules] HB / nitrogen fertilizer 0.01 to 80 parts Solid carrier 10 to 99.99 parts Others 0 to 10 parts Others include, for example, a binder and a decomposition inhibitor.

When used, the above preparation is sprayed as it is or diluted 1 to 10,000 times with water.

Formulation Examples Specific examples of the formulation of the present invention are shown below, but the invention is not limited thereto. In the following formulation examples, "parts" means parts by weight.

[Formulation Example 1] Liquid preparation MCP isopropylamine salt 30 parts Ammonium nitrate 25 parts Isopropanol 10 parts Water 35 parts The above are mixed and dissolved to form a liquid preparation.

[Formulation Example 2] Solution MCPP potassium salt 30 parts Ammonium nitrate 25 parts Isopropanol 10 parts Water 35 parts The above are mixed and dissolved to form a solution.

Formulation Example 3 Solution 15 parts of triclopyrtriethylammonium 40 parts of ammonium salt 10 parts of isopropanol 35 parts of water are mixed and dissolved to form a solution.

[Formulation Example 4] Suspending agent (flowable agent) Triclopropyltriethylammonium 15 parts Ammonium 40 parts Agrisol S-710 10 parts (Nonionic surfactant: trade name of Kao Corporation) Lunox 1000C 0.5 Part (anionic surfactant: trade name of Toho Chemical Industry Co., Ltd.) Xanthan gum 0.2 part Water 34.3 parts After uniformly mixing the above, wet pulverization is performed to prepare a suspending agent.

[Formulation Example 5] Water dispersible granule (dry flowable) 15 parts of triclopyrtriethylammonium 40 parts of ammonium nitrate 5 parts of hytenol NE-15 (anionic surfactant: trade name of Daiichi Kogyo Seiyaku Co., Ltd.) Vanillex N 10 parts (Anionic surfactant: Nippon Paper Industries Co., Ltd.) Pyrophyllite 30 parts After uniformly mixing and pulverizing the above, a small amount of water was added, followed by stirring, mixing and kneading, and an extrusion granulator. And dried to obtain a wettable powder.

[Formulation Example 6] Granules Triclopyr triethylammonium 15 parts Ammonite 40 parts Bentonite 30 parts Talc 15 parts After uniformly mixing and pulverizing the above, a small amount of water was added, followed by stirring, mixing and kneading, followed by extrusion granulation. Granulate with a machine and dry to make granules.

[0031]

EXAMPLES The present invention will be described below with reference to examples.
The present invention is not limited only to the embodiments. Example 1 Brasscon M solution (trade name) was added as MCP isopropylamine salt to black seagrass in a driving range of a golf course in Fukuoka Prefecture where white clover and giant garland were generated at a rate of 3 per 1a.
0 g was sprayed, and the MCPP solution (trade name) was sprayed as MCPP potassium salt at 25 g per 1 a, and the zytronamine solution (trade name) was sprayed as triclopyrtriethylammonium at 8.8 g per 1 a. The spray liquid volume was 20 L per 1 a. In spraying the Brascon M solution, ammonium sulfate was added to the spray solution so as to be 0 or 4000 ppm. In the application of the MCPP solution and the application of the zytronamine solution, the content was added so as to be 0 or 2000 ppm.

On the 27th day after the treatment, the herbicidal effect on the white clover and the giant alga was observed and investigated. The results are shown in Tables 1 and 2.

[0033]

[Table 1] Table 1. Herbicidal effect on white clover ──────────────────────────────────── Active ingredient name Component amount Ammonium sulfate concentration Nitrogen amount Nitrogen Amount / herbicidal effect ^* Active ingredient amount g / a ppm g / 10a g / g ──────────────────────────────── ──── MCP isopropyl 300 0-7.0 amine salt 4000 172 0.57 8.5 ───────────────────────────────── ─── MCPP potassium salt 25 0 0-8.5 2000 86 0.34 9.5 ───────────────────────────────────ト リ Trichlorophenol triethyl 8.8 0 0-7.0 Ammonium 2000 86 0.98 9.8 ─ * Herbicidal effect: 0 (no effect) to 10 (complete death)

[0034]

[Table 2] Table 2. Herbicidal effect on oleophobium ギ Active ingredient name Component amount Ammonium sulfate concentration Nitrogen amount Nitrogen Amount / herbicidal effect ^* Active ingredient amount g / a ppm g / 10a g / g ──────────────────────────────── ──── MCP isopropyl 300 0-6.0 amine salt 4000 172 0.57 7.0 ───────────────────────────────── ─── MCPP potassium salt 25 0 0 − 6.0 2000 86 0.34 8.0 ─────────────────────────────────── ─ Trichlorophenol triethyl 8.8 0 0-5.0 Ammonium 2000 86 0.98 8.0 ──────────────────────────────────── * Herbicidal effect: 0 (no effect) to 10 (complete withering) Table and As is clear from Table 2, by adding ammonium sulfate to the spray solution at a concentration of 2000～4000Ppm, MCP isopropylamine salt, MCPP potassium salt, the improvement in the herbicidal effect of triclopyr triethylammonium was observed.

[0035]

According to the present invention, simultaneous application of at least one selected from a phenoxy acid herbicidal active compound and an aromatic carboxylic acid herbicidal active compound and a small amount of nitrogen fertilizer makes it possible to reduce the amount of herbicidally active compound as compared with the case where the herbicidal active compound is applied alone. The herbicidal effect is improved, and various harmful weeds can be controlled efficiently.

Claims (10)

[Claims] Claims: 1. A herbicidally active compound selected from the group consisting of a phenoxy acid-based herbicidal active compound and an aromatic carboxylic acid-based herbicidal compound, and a nitrogen fertilizer. The nitrogen fertilizer is applied in an amount of 10 to 1000 g per 10 ares. A herbicidal composition characterized by being: 2. The herbicidal composition according to claim 1, which is applied to turf. 3. An amount of nitrogen element in the nitrogen fertilizer of 0.01 to 1 part by weight of at least one selected from a phenoxy acid herbicidal active compound and an aromatic carboxylic acid herbicidal active compound.
The herbicidal composition according to claim 1, which contains 5 parts by weight. 4. The herbicidal composition according to claim 1, wherein at least one selected from a phenoxy acid-based herbicidal compound and an aromatic carboxylic acid-based herbicidal compound is a phenoxy acid-based herbicidal compound. 5. The method according to claim 5, wherein the phenoxy acid-based herbicidally active compound is MC.
The herbicidal composition according to claim 4, which is a salt of P or an ester thereof, a salt of MCPP, or a salt of triclopyr or an ester thereof. 6. At least one selected from a phenoxy acid-based herbicidal active compound and an aromatic carboxylic acid-based herbicidal active compound and a nitrogen fertilizer are applied simultaneously, and the application rate of nitrogen element in the nitrogen fertilizer is 10 to 10 ares. A weeding method characterized by being 1000 g. 7. The method according to claim 6, wherein the method is applied to turf. 8. An amount of nitrogen element in the nitrogen fertilizer of 0.01 to 1 part by weight of at least one selected from phenoxy acid herbicidally active compounds and aromatic carboxylic acid herbicidally active compounds.
The weeding method according to claim 6, wherein 5 parts by weight are applied. 9. The herbicidal method according to claim 6, wherein at least one selected from a phenoxy acid herbicidal active compound and an aromatic carboxylic acid herbicidal active compound is a phenoxy acid herbicidal active compound. 10. The herbicidally active compound of the phenoxy acid type, wherein the compound is M
The herbicidal method according to claim 9, which is a salt of CP or an ester thereof, a salt of MCPP or a salt of triclopyr or an ester thereof.