JPH0680504A - Herbicidal formulation and herbicidal method - Google Patents

Abstract

PURPOSE:To obtain a herbicidal formulation, capable of rapidly killing weeds by its direct spraying and having high safety for humans and animals and capable of manifesting fast-acting effect and its herbicidal method. CONSTITUTION:The objective fact-acting herbicidal formulation for direct spraying is composed of an aqueous composition comprising 0.1-20wt.% herbicidal ingredient and >=0.1wt.% anionic surfactant. Furthermore, the objective rapid herbicidal method is to directly spray this aqueous composition on weeds.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a herbicidal preparation and a herbicidal method in which a herbicidal ingredient has a fast-acting effect.

[0002]

2. Description of the Related Art Up to now, herbicidal preparations such as emulsions and wettable powders have improved spreadability, dispersibility, penetration and the like for 35 to 50% by weight of herbicidal compound components to ensure their effects. Therefore, it is usual to add 20 to 30% by weight of a surfactant.

[0003]

When these preparations are put to practical use, they are diluted 1000 to 2000 times with water,
For example, the herbicides are sprayed at a dilute concentration of 0.01 to 0.025% and a surfactant concentration of 0.01 to 0.03%, but the herbicidal effect only gradually appears and the rapid-acting effect is sufficient. Is hard to say.

[0004]

As a result of repeated studies to overcome the above-mentioned drawbacks, the present inventors have practically applied one or more herbicidal components and various anionic surfactants in conventional spraying. It has been found that the aqueous composition containing unexpectedly exhibits a fast-acting herbicidal effect at a much higher concentration than the one obtained.

The present invention is based on this new finding, and is a fast-acting herbicide for direct application, which comprises an aqueous composition containing 0.1 to 20% by weight of a herbicide component and 0.1% by weight or more of an anionic surfactant. It relates to a method for rapid weeding, which comprises applying a formulation and the above-mentioned aqueous composition to weeds.

As the herbicide component contained in the herbicidal preparation of the present invention, various herbicidally active compounds are used. These compounds are, for example, organophosphorus compounds (eg, bialaphos,
Glufosinate), acid amides (eg, metolachlor,
DCPA), diazine type (eg, bentazone), phenoxy type (eg, MCPB, MCPP), carbamate type (eg, thiobencarb), urea type (eg, DCMU, tebutiuron), sulfonylurea type (eg, esprocarb), triazine type. (Eg, simazine), dizole type (eg, pyrazoquinphene), aromatic carboxylic acid type (eg,
TCBA), fatty acid-based (eg, tetrapion) and bipyridylium-based (eg, paraquat) and other organic herbicide compounds are included. It may also be an inorganic herbicide compound such as a chlorate agent.

The anionic surfactant in the herbicidal preparation of the present invention may be any anionic surfactant as long as the object of the present invention is not impaired, but preferred are sulfonate, sulfate and phosphate anionic surfactants. Less than,
Add ^R to the product name.

Examples of the sulfonate anionic surfactant include Newcol-290M ^R [dialkylsulfosuccinate, manufactured by Nippon Emulsifier Co., Ltd.], Newcol-210 ^R [alkylbenzene sulfonate, manufactured by the same], Newkalgen EP. -4M ^R [dialkylsulfosuccinate soda salt, manufactured by Takemoto Yushi Co., Ltd.], Newkalgen EP-4C ^R [dialkylsulfosuccinate soda salt, manufactured by the same company], RY-453W ^R [Matsumoto Yushi-Seiyaku Co., Ltd.] Made], RY-349 [made by the same], Solpol 5
050 ^R [dialkyl ester sulfonate, manufactured by Toho Chemical Industry Co., Ltd.], Solpol 3047K ^R [manufactured by the same company],
Examples thereof include Disrol SH ^R [sodium bisnaphthalene sulfonate, manufactured by the same company], but are not limited to these examples.

Examples of the sulfate type anionic surfactants include, for example, Pionin A-15 ^R [highly concentrated oleic acid sulfate, manufactured by Takemoto Yushi Co., Ltd.], funnel oil 40 ^R [manufactured by Toho Chemical Industry Co., Ltd.], Newcol 240 ^R [Alkyl disulfate, manufactured by Nippon Emulsifier Co., Ltd.], Newcor 560 SN ^R [manufactured by the same company], Newcor 570 SF
Examples thereof include [polyoxyethylene allyl ether sulphate, manufactured by the same company], but are not limited to these examples. Examples of the phosphate-based anionic surfactant include, for example, Parachol OP ^R [alkyl phosphate, manufactured by Toho Chemical Industry Co., Ltd.], BIONIN A-73.
K ^R [alkyl phosphate, manufactured by Takemoto Yushi Co., Ltd.],
Examples thereof include Pionine A-720 ^R [nonylphenyl ether phosphate, manufactured by the same company], but are not limited to these examples.

Further, a polycarboxylic type polymer activator such as Disrol H12 ^R [Japan Emulsifier Co., Ltd.] is also used.

In the present invention, one or more anionic surfactants are used, and 0.2 part by weight or more of the anionic surfactant is used for 1 part by weight of the herbicide component. Generally, the preferable ratio of the herbicide component to the anionic surfactant is 0.2 to 200 parts by weight of the latter with respect to 1 part by weight of the former,
More preferably, it is 0.25 to 100 parts by weight. The above herbicidal component and anionic surfactant are mixed with water or an aqueous solvent, and the herbicidal component is 0.1 to 20% by weight, preferably 0.1 to 4% by weight, anionic surfactant 0.1% by weight. The above composition is prepared into an aqueous composition containing preferably 1 to 20% by weight, more preferably 1 to 10% by weight.

This aqueous composition is a ready-use herbicidal formulation which can be applied to weeds without being diluted with water.

The aqueous composition may contain phosphoric acid, if necessary.
Stabilizers such as polyphosphoric acid, citric acid and tartaric acid, and antifreezing agents such as isopropyl alcohol and ethylene glycol may be added, and if necessary, soaps, polyoxyalkyl ethers as spreading agents and wetting agents. Anionic or nonionic surfactants such as compounds, alkyl sulfates, polyethylene glycol ethers, alkyl sulfonates, polyhydric alcohol ethers and the like can be added.

The herbicidal preparation of the present invention thus obtained is not only sprayed as it is to rapidly kill weeds, but also has very little toxicity and is safe.

[0015]

EXAMPLES Next, reference examples describing the production of the herbicidal formulation of the present invention in the form of examples and describing the production of the control formulation described in the test examples, and test examples comparing the effects of the present invention formulation and the control formulation Indicates.

Example 1 867 parts of ordinary water was charged into a dissolution tank and stirred while stirring 2.5 parts of New Calgen EP-4M ^R [dialkylsulfosuccinate soda salt, manufactured by Takemoto Yushi Co., Ltd.], TSA-7.
After 0.2 part of 30 ^R (dimethyl silicone oil, antifoaming agent) was added and mixed thoroughly, 0.6 part of DCPA and 10 parts of isopropyl alcohol were added and dissolved to obtain a liquid agent.

Example 2 82.4 parts of ordinary water was charged into a dissolution tank and stirred with Newcalgen EP-4C ^R [dialkylsulfosuccinate soda salt, manufactured by Takemoto Yushi Co., Ltd.] 2.0 parts, TSA-
After adding 0.1 part of 730 ^R and thoroughly mixing, 0.5 part of glyphosate and 15 parts of isopropyl alcohol are added and dissolved to obtain a liquid preparation.

Example 3 79.5 parts of ordinary water was charged into a dissolution tank, 10 parts of Newcalgen EP-4C ^R, 10 parts of isopropyl alcohol, and 0.1 part of TSA-730 ^R were added with stirring and sufficiently mixed, and then bialaphos. 0.4 parts is added and uniformly dissolved to obtain a liquid agent.

Example 4 81.9 parts of ordinary water was charged into a dissolution tank and stirred with Newcol-290M ^R [dialkylsulfosuccinate, manufactured by Nippon Emulsifier Co., Ltd.] 2.5 parts, TSA-730 ^R.
After 0.1 part is added and mixed well, 0.5 part of glyphosinate and 15 parts of isopropyl alcohol are added and dissolved to obtain a liquid preparation.

Example 5 85.8 parts of ordinary water was charged into a dissolution tank and stirred with Newcol-210 ^R [alkylbenzene sulfonate,
Nippon Emulsifier Co., Ltd.] 3.5 parts, TSA-730 ^R 0.
After adding 2 parts and mixing well, 0.3 parts of DCMU,
0.2 parts of terbacil and 10 parts of isopropyl alcohol are added and dissolved to obtain a liquid agent.

Example 6 86.5 parts of ordinary water was charged into a dissolution tank and stirred while stirring 2.5 parts of Newcalgen EP-70G ^R [Dioctylsulfosuccinate, manufactured by Takemoto Yushi Co., Ltd.], TSA-730 ^R.
After adding 0.5 parts and mixing thoroughly, glyphosate
0.5 parts trimesium hydrochloride, 1 isopropyl alcohol
0 part is added and dissolved to obtain a liquid preparation.

Example 7 85.8 parts of ordinary water was charged into a dissolution tank and stirred while stirring with Newcalgen EP-4M ^R [dialkyl sulfosuccinate soda salt, manufactured by Takemoto Yushi Co., Ltd.] 3.5 parts, TSA-
730 ^{R (} 0.2 parts) was added and mixed thoroughly, and then tebutyuron (0.5 parts) and isopropyl alcohol (10 parts) were added to dissolve the solution.

Example 8 86.4 parts of ordinary water was charged into a dissolution tank and stirred with air roll CT-1 ^R [dioctyl sulfosuccinate, manufactured by Toho Chemical Industry Co., Ltd.] 2.5 parts, TSA-730 ^R 0.
After adding 5 parts and mixing well, glyphosate 0.6
Parts and 10 parts of isopropyl alcohol are added and dissolved to obtain a liquid preparation.

Example 9 69.3 parts of ordinary water was charged into a dissolution tank and, with stirring, 15 parts of Newkalgen EP4C and 1 part of isopropyl alcohol.
5 parts After sufficiently stirred with 0.2 parts TSA-750 ^R, to obtain a liquid formulation by dissolving 0.5 parts of bialaphos.

Example 10 864 parts of ordinary water were charged into a dissolution tank and 2.5 parts of air roll OP ^R [dioctyl sulfosuccinate, manufactured by Toho Chemical Industry Co., Ltd.] and 0.5 part of TSA-730 ^R were added with stirring. After thoroughly mixing, 0.6 part of atrazine and 10 parts of isopropyl alcohol are added and dissolved to obtain a liquid agent.

Example 11 87.5 parts of ordinary water was charged into a dissolution tank and stirred while stirring, Pionin A-15 ^R [high concentration oleic acid sulfide, manufactured by Takemoto Yushi Co., Ltd.] 1.5 parts, TSA-730 ^R 0 After adding 2 parts and thoroughly mixing, 0.8 parts of DCPA and 10 parts of isopropyl alcohol are added and dissolved to obtain a liquid agent.

Example 12 84.2 parts of ordinary water was charged into a dissolution tank, and while stirring, phosphanol RP-710 ^R [phenol ether phosphate ester, manufactured by Toho Chemical Industry Co., Ltd.] 4.5 parts, TSA
-730 ^R 0.5 part was added and mixed thoroughly, and then 0.8 part of glyphosate / trimesium hydrochloride and 10 parts of isopropyl alcohol were added and dissolved to obtain a liquid preparation.

Example 13 79.9 parts of ordinary water was charged into a dissolution tank and stirred with Newcol 240 ^R [alkyldisulfide, manufactured by Nippon Emulsifier Co., Ltd.] 4.0 parts, TSA-750 ^R 0.5 part. After adding and thoroughly mixing, 0.6 part of atrazine and 15 parts of isopropyl alcohol are added and dissolved to obtain a liquid preparation.

Example 14 43.5 parts of ordinary water was charged into a dissolution tank and stirred with Newcalgen EP-4C ^R [dialkylsulfosuccinate soda salt, manufactured by Takemoto Yushi Co., Ltd.] 20 parts, isopropyl alcohol 15 parts and After 1.5 parts of TSA-730 ^R was added and sufficiently stirred, 20 parts of viaholus was added and dissolved to obtain a liquid agent.

Example 15 54.5 parts of ordinary water was charged into a dissolution tank, and 20 parts of Paracor OP ^R [alkyl phosphate, manufactured by Toho Chemical Industry Co., Ltd.] and 0.5 part of TSA-750 ^R were added with stirring. After thoroughly mixing, 10 parts of glyphosate and 15 parts of isopropyl alcohol are added and dissolved to obtain a liquid agent.

Example 16 53.5 parts of ordinary water was charged into a dissolution tank and 20 parts of Newcol SN ^R [alkyl disulfate, manufactured by Nippon Emulsifier Co., Ltd.] and 15 parts of TSA-730 ^R were added and stirred sufficiently. After that, 15 parts of glyphosinate and 10 parts of isopropyl alcohol are added and dissolved to obtain a liquid agent.

Reference Example 1 87.0 parts of ordinary water was charged into a dissolution tank and stirred with Newcalgen ST-50 ^R [polyoxyalkylene allyl phenyl ether, manufactured by Takemoto Yushi Co., Ltd.] 2.0 parts TS.
Add 0.2 parts of A-730 ^R and stir well, then DC
0.8 parts of PA and 10 parts of isopropyl alcohol are added and dissolved to obtain a liquid preparation.

Reference Example 2 87.0 parts of ordinary water was charged into a dissolution tank and stirred with Newcol 862 ^R [polyoxyethylene octylphenyl ether, manufactured by Nippon Emulsifier Co., Ltd.] 2.5 parts, TSA-
750 ^{R (} 0.1 part) and isopropyl alcohol (10 parts) are added and mixed thoroughly, and then 0.4 part of bialaphos is added and dissolved to obtain a liquid preparation.

Reference Example 3 873 parts of ordinary water was charged into a dissolution tank, 2.0 parts of SORPOL 3688 ^R [polyoxyethylene castor oil, manufactured by Toho Chemical Industry Co., Ltd.] and 0.2 part of TSA-730 ^R were added with stirring. And thoroughly mixed, then 0.3 parts of DCMU, 0.2 parts of terbacyl and 10 parts of isopropyl alcohol are added and dissolved to obtain a liquid preparation.

Reference Example 4 96.7 parts of ordinary water was charged into a dissolution tank and stirred with Newcalgen ST-50X ^R [polyoxyalkylene allyl phenyl ether, manufactured by Takemoto Yushi Co., Ltd.] 2.5 parts, T
After adding 0.2 parts of SA-730 ^R and mixing thoroughly,
Glyphosate (0.6 part) is added and dissolved to obtain a liquid preparation.

Reference Example 5 86.7 parts of ordinary water was charged into a dissolution tank and stirred with SOLPOL 3539W ^R [polyoxyethylene styryl phenyl ether alkylallyl sulfonate, manufactured by Toho Chemical Industry Co., Ltd.] 2.5 parts, TSA- 730 ^R 0.2 parts,
After adding 10 parts of isopropyl alcohol and thoroughly mixing, 0.6 part of atrazine was added and dissolved to obtain a liquid preparation.

Test Example 1 Targeting crabgrass, Enocorogosa, Duckweed, and Nupisotohagi, a test field in which they grew to a plant height of 20 to 30 cm was divided into 1 m ² sections, and each preparation obtained in the above Examples and Reference Examples was divided into An amount of 100 ml / m ² was sprayed uniformly over the entire foliage of the grass using a pump atomizer twice. Weed condition was checked every 24 hours. The results are shown in Tables 1 and 2, and the types of herbicidal components and surfactants contained in the formulations of Examples and Reference Examples are shown in Tables 3 and 4.

[0038]

[Table 1] Note) Evaluation criteria for weed status 5: 100% death 4: 50% death 3: 25% death 2: Change 1: No change

[0039]

[Table 2] Note) Evaluation criteria for weed status 5: 100% death 4: 50% death 3: 25% death 2: Change 1: No change

As is clear from Tables 1 and 2, the in-formulation results in each Example were 24 hours after the earliest and 72 hours at the latest.
After 100 hours, 100% mortality was shown, but the formulation of Reference Example showed some or no change in the state of weeds even after 72 hours.

[0041]

[Table 3]

[0042]

[Table 4]

Test Example 2 According to the present invention, it is said that Nucargen EP-4C is used as an anionic surfactant, and a preparation using a cationic, nonionic or amphoteric surfactant instead of it and a commercially available fast-acting agent. Compared to formulation. Examples of nonionic surfactants include Newcalgen TAK-3615T ^R (polyoxyethylene tallow amino ether) and TAK300.
0 S ^R (quaternized polyoxyethylene alkylamino ether), TAK 89137 ^R (polyoxyethylene alkyl allyl ether) [all manufactured by Takemoto Yushi Co., Ltd.] and REO DOL KAOTW-0120 ^R [polyoxyethylene sorbitan monooleate, Kao ( Co., Ltd.]
Amphoteric KAO24B as amphoteric surfactant
^R [lauryl betaine, manufactured by Kao Corporation] was used.

These test formulations were prepared as follows.
That is, a liquid agent was obtained in the same manner as in Reference Example 2 except that 0.4 part of bialaphos and 8.5 parts of various surfactants were used and the total amount of water was 100 parts.

With respect to each of the above-mentioned preparations and a commercially available 50-fold dilution of Herbiace and a paste solution, a weeding test was conducted in the same manner as in Test Example 1, and the situation of the target weeds was investigated over time, and the results in Table 5 were obtained. Got

[0046]

[Table 5] Note) Criteria for weed condition +++ 100% dead + 50% dead + 10% dead ± Leaf tip dead-no change

[0047]

INDUSTRIAL APPLICABILITY According to the present invention, there is provided a fast-acting herbicide which is highly safe for humans and animals and can kill weeds within 1 to 3 days.

Claims (7)

[Claims] 1. A rapid-acting herbicidal formulation for direct application, which comprises an aqueous composition containing 0.1 to 20% by weight of a herbicide component and 0.1% by weight or more of an anionic surfactant. 2. The herbicidal preparation according to claim 1, which contains 0.1 to 20% by weight of an anionic surfactant. 3. The herbicidal preparation according to claim 1, wherein the herbicidal component is 0.1 to 4% by weight and the anionic surfactant is 1 to 10% by weight. 4. The herbicide component is an organic phosphorus type, an acid amide type,
The herbicidal preparation according to claim 1 or 2, which is a diazine-based, phenoxy-based, carbamate-based, urea-based, sulfonylurea-based, triazine-based, diazole-based, aromatic carboxylic acid-based, fatty acid-based, bipyridylium-based or inorganic herbicide compound. 5. The anionic surfactant is a sulfonate type,
The herbicidal preparation according to claim 1, which is a sulfate or phosphate anionic surfactant. 6. The aqueous composition is prepared by diluting a concentrated preparation containing 1 part by weight or more of an anionic surfactant with 0.1 to 5 parts by weight of a herbicidal component with water. 1
The herbicidal preparation described. 7. A method for rapid weeding, which comprises directly spraying an aqueous composition containing 0.1 to 20% by weight of a herbicide component and 0.1% by weight or more of an anionic surfactant onto weeds.