JPH07267805A - Herbicide composition for lawn - Google Patents

Abstract

PURPOSE:To obtain a herbicide composition for a lawn, showing an excellent synergistic effect and high herbicidal activity with a small amount, by using both a specific haloalkyl group-containing triazine derivative and at least one compound selected from a specific compound group. CONSTITUTION:This herbicide composition comprises both a triazine derivative of formula I [A is a group of formula II (Z is O or S) or formula III (X<2> is methyl or F; (n) is an integer of 0-2)] and at least one compound selected from the group consisting of ethyl 5-[3-(4,6-dimethoxypyrimidin-2-yl)ureidosulfonyl]-1- methylpyrazole-4-carboxylate, 2-(4-chloro-2-methylphenoxy)-propionic acid, N-l- ethylpropyl-3,4-dimethyl-2,6-dinitroaniline, N-butyl-N-ethyl-2,6-dinitro-4-trifluoro- methylaniline and 2-chloro-4,6-bisethylamino-1,3,5-triazine.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a lawn herbicide composition containing a triazine derivative and at least one compound selected from a specific compound group as active ingredients.

[0002]

2. Description of the Related Art Currently,
Many herbicides are used as lawn herbicides,
Usually, weeds are controlled twice a year in spring and autumn mainly by soil treatment agents. However, during this period, the lawn management work such as fertilization and the lawn renewal work may overlap, or the application of the herbicide may be delayed due to rainy weather. In such a case, since weeds that have already occurred are mixed, the soil treatment agent may not be able to sufficiently control the weeds. In order to cope with such a situation, there is a demand for a herbicide that has both a soil treatment effect and a foliage treatment effect and has a wide range of treatment time.
Further, in order to solve the problem of environmental pollution caused by conventional herbicides, development of highly active herbicides has been desired.

Under these circumstances, the present inventors have found that certain novel haloalkyl-containing triazine derivatives are
It has already been found that the difficult-to-control weeds have a high herbicidal effect in both soil treatment and foliage treatment (International Patent Application published in International Publication No. WO 90/09378). The present inventors have conducted earnest studies to further improve the herbicidal activity of the triazine derivative and develop a herbicide that matches the performance required as a lawn herbicide.

[0004]

As a result, a composition containing the triazine derivative and at least one compound selected from a specific compound group as an active ingredient can control a wide range of weeds in a lawn. It has been found that the herbicidal effect of each of them has an excellent synergistic effect which cannot be predicted from the properties of each of them alone, shows a high herbicidal effect at a lower dose, and has a wide range of treatment time. The present invention has been completed based on the findings.

That is, the present invention has the general formula [I]

[Chemical 4] [In the formula, A is the following formula (a)

[Chemical 5] (However, Z represents an oxygen atom or a sulfur atom.) Or Formula (b)

[Chemical 6] (However, X ² represents a methyl group or a fluorine atom, and n is 0.
Indicates an integer of ˜2. ), R ¹ represents a hydrogen atom or a methyl group, and X ¹ represents a fluorine atom or a chlorine atom. ]
A triazine derivative represented by and ethyl 5- [3- (4,6-dimethoxypyrimidin-2-yl) ureidosulfonyl] -1-
Methylpyrazole-4-carboxylate, 2- (4-chloro-
2-Methylphenoxy) -propionic acid, N-1-ethylpropyl-3,4-dimethyl-2,6-dinitroaniline, N-butyl
At least one compound selected from the group consisting of -N-ethyl-2,6-dinitro-4-trifluoro-methylaniline and 2-chloro-4,6-bisethylamino-1,3,5-triazine The present invention provides a herbicide composition for lawns containing as an active ingredient.

The herbicidal composition of the present invention comprises a triazine derivative represented by the above general formula [I] and at least one compound selected from the group consisting of the above compounds as active ingredients. is there.

In the triazine derivative represented by the above general formula [I], A in the general formula [I] represents the formula (a) or the formula (b) as described above, and more preferably the formula It shows (b). As described above, when A of the general formula [I] represents the formula (b), the general formula [I]
It is particularly preferred that R ¹ therein represents a methyl group. When A in the general formula [I] represents the formula (b), it is particularly preferable that X ¹ in the general formula [I] represents a fluorine atom.

Specific examples of the triazine derivative represented by the above general formula [I] are as follows.

First, the formula

[Chemical 7] 2-amino-4- [1- (benzofuran-
2'-yl) ethylamino] -6- (α-fluoro, α
-Methylethyl) -s-triazine.

Next, the expression

[Chemical 8] 2-amino-4- [1- (benzofuran-
2'-yl) ethylamino] -6- (α-fluoroethyl) -s-triazine.

Also, the formula

[Chemical 9] 2-amino-4- [1- (benzothiophen-2′-yl) ethylamino] -6- (α-fluoro, α-methylethyl) -s-triazine represented by

Further, the formula

[Chemical 10] 2-amino-4- (α-fluoro, α-methylethyl) -6- [2- (3′-methylphenoxy) represented by
-1-Methyl-ethylamino] -s-triazine may be mentioned.

Then, the formula

[Chemical 11] 2-amino-4- (α-fluoro, α-methylethyl) -6- [2- (3′-fluorophenoxy) -1-methyl-ethylamino] -s-triazine represented by

Also, the formula

[Chemical 12] 2-amino-4- (α-chloro, α-methylethyl) -6- [2- (3 ′, 5′-dimethylphenoxy) -1-methylethylamino] -s-triazine represented by

Further, the expression

[Chemical 13] 2-amino-4- (α-fluoro, α-methylethyl) -6- [2- (3 ′, 5′-dimethylphenoxy) -1-methyl-ethylamino] -s-triazine represented by be able to.

In the present invention, among the triazine derivatives represented by the above general formula [I], 2-amino-4- (α-fluoro, α-methylethyl) -6-
[2- (3'-methylphenoxy) -1-methyl-ethylamino] -s-triazine, 2-amino-4- (α-
Fluoro, α-methylethyl) -6- [2- (3′-fluorophenoxy) -1-methyl-ethylamino] -s
-Triazine, 2-amino-4- (α-chloro, α-methylethyl) -6- [2- (3 ', 5'-dimethylphenoxy) -1-methyl-ethylamino] -s-triazine, 2- Amino-4- (α-fluoro, α-methylethyl) -6- [2- (3 ′, 5′-dimethylphenoxy)-
1-Methyl-ethylamino] -s-triazine is preferred, especially 2-amino-4- (α-fluoro, α-methylethyl) -6- [2- (3 ′, 5′-dimethylphenoxy) -1-. Most preferred is methyl-ethylamino] -s-triazine.

The triazine derivative represented by the above general formula [I] can be produced by various methods. Among them, an efficient production method is disclosed in International Publication No. WO 90/09378. There are methods described in international patent applications. Details are left to this publication.

The lawn herbicide composition of the present invention comprises a triazine derivative represented by the above general formula [I] and ethyl 5- [3- (4,6-dimethoxypyrimidine-2) as described above.
-Yl) ureidosulfonyl] -1-methylpyrazole-4-
Carboxylate, 2- (4-chloro-2-methylphenoxy) -propionic acid, N-1-ethylpropyl-3,4-dimethyl
-2,6-Dinitroaniline, N-butyl-N-ethyl-2,6-dinitro-4-trifluoro-methylaniline and 2-chloro
At least one compound selected from the group consisting of -4,6-bisethylamino-1,3,5-triazine is used as an active ingredient.

Here, ethyl 5- [3- (4,6-dimethoxypyrimidin-2-yl) ureidosulfonyl] -1-methylpyrazole-4-carboxylate (hereinafter referred to as compound B-1) has a general name. Is a pyrazosulfuron-ethyl herbicide. Next, 2- (4-chloro-2-methylphenoxy) -propionic acid (hereinafter referred to as compound B-2) is
It is a herbicide whose generic name is MCPP. In the present invention, it is most preferable to use the above-mentioned two kinds of compounds in combination with the triazine derivative, in view of the excellent foliar treatment effect on weeds having a considerably advanced leaf age in addition to the soil treatment effect.

Next, N-1-ethylpropyl-3,4-dimethyl
-2,6-Dinitroaniline (hereinafter referred to as compound B-3) is a herbicide whose generic name is pendimethalin. N-Butyl-N-ethyl-2,6-dinitro-4-trifluoro-methylaniline (hereinafter referred to as compound B-4) is a herbicide whose generic name is bethrosine.

Finally, 2-chloro-4,6-bisethylamino
-1,3,5-triazine (hereinafter referred to as compound B-5)
Is a herbicide whose generic name is simazine.

The compounds shown as the above compounds B-1 to B-5 can be obtained by a known production method, or commercially available compounds can be used. These compounds B-1 and B-2 have high effects on broad-leaved weeds as a foliar treatment agent, but have low effects on grass weeds, and have insufficient soil treatment effects on both grasses and broad-leaved weeds. In addition, the compounds B-3 and B-4 are
Although it is effective as a soil treatment agent against grass weeds, its effect on broadleaf weeds is insufficient. Further, Compound B-5 is effective as a soil treatment agent for grass weeds and broadleaf weeds, but the foliar treatment effect for weeds with advanced leaf age is insufficient.

The lawn herbicide composition of the present invention comprises a triazine derivative represented by the general formula [I] and one compound selected from the group consisting of the compounds B-1 to B-5. Although it is contained as a component, it has the general formula [I]
The triazine derivative represented by 2-amino-4- (α
-Fluoro, α-methylethyl) -6- [2- (3'-
Methylphenoxy) -1-methyl-ethylamino] -s
-Triazine, 2-amino-4- (α-fluoro, α-
Methylethyl) -6- [2- (3'-fluorophenoxy) -1-methyl-ethylamino] -s-triazine,
2-Amino-4- (α-chloro, α-methylethyl)-
6- [2- (3 ', 5'-dimethylphenoxy) -1-methyl-ethylamino] -s-triazine or 2-amino-4- (α-fluoro, α-methylethyl) -6- [2
-(3 ', 5'-dimethylphenoxy) -1-methyl-ethylamino] -s-triazine, and the compound to be added to the triazine derivative represented by the general formula [I] is ethyl 5- [3- (4 , 6-Dimethoxypyrimidin-2-yl) ureidosulfonyl] -1-methylpyrazole-4-carboxylate (Compound B-1) or 2- (4-chloro-2-methylphenoxy) -propionic acid (Compound B-2 ) Is preferred. A particularly preferred combination is a 2-amino-4 triazine derivative represented by the general formula [I].
-(Α-Fluoro, α-methylethyl) -6- [2-
(3 ′, 5′-dimethylphenoxy) -1-methyl-ethylamino] -s-triazine, and the compound to be added to this is ethyl 5- [3- (4,6-dimethoxypyrimidin-2-yl) ureido. Sulfonyl] -1-methylpyrazole-4-carboxylate (compound B-1) or 2- (4-chloro-2-methylphenoxy) -propionic acid (compound B-2). In addition to the soil treatment effect, such a combination shows an excellent foliar treatment effect even on weeds having a considerably advanced leaf age.

The lawn herbicide composition of the present invention comprises a triazine derivative represented by the above general formula [I] and one compound selected from the group consisting of the compounds B-1 to B-5. Although it is contained as a component, its mixing ratio is not particularly limited, and an excellent synergistic effect can be obtained in a wide mixing ratio.

As a general formulation example, 0.01 to 10 parts by weight of compound B-1, preferably 0.02 to 1 part by weight of the triazine derivative represented by the general formula [I] is used.
5 parts by weight, more preferably 0.05 to 1 part by weight.
Similarly, the compounds B-2 to B-5 are 0.1 to 100 parts by weight, preferably 0.2 to 50 parts by weight, and more preferably 0.5 to 30 parts by weight.

The lawn herbicide composition of the present invention comprises a triazine derivative represented by the above general formula [I] and one compound selected from the group consisting of the compounds B-1 to B-5. It can be used by mixing it with a liquid carrier such as a solvent or a solid carrier such as a mineral powder and formulating it into a form such as a wettable powder, an emulsion, a powder, a granule, a flowable agent or a liquid agent. Upon formulation, a surfactant such as an emulsifier, a dispersant, a spreading agent, a suspending agent, a penetrating agent, a stabilizer, and other auxiliary agents may be added, if desired.

When the lawn herbicide composition of the present invention is used in the form of a wettable powder, it usually contains the above-mentioned triazine derivative,
1 to 75% by weight of a mixture with one compound selected from the group consisting of the compounds B-1 to B-5 as an active ingredient,
Preferably 5 to 55% by weight, solid carrier 20 to 98% by weight, preferably 40 to 88% by weight and surfactant 1%.
The composition may be prepared by blending it in an amount of 10 to 10% by weight, preferably 2 to 5% by weight, and this may be used.

When used in the form of an emulsion and a flowable agent, a mixture of the above-mentioned triazine derivative and one compound selected from the group consisting of the compounds B-1 to B-5 is usually used as an active ingredient. 5 to 70% by weight, preferably 10 to 50% by weight, solvent (liquid carrier) 15 to 90
% By weight, preferably 35-75% by weight, and 1-30% by weight of surfactants and other auxiliaries, preferably 5%.
It may be prepared by blending it in a proportion of -15% by weight.

On the other hand, when it is used in the form of a powder, a mixture of the above-mentioned triazine derivative as an active ingredient and one compound selected from the group consisting of the compounds B-1 to B-5 is usually used. -40% by weight, preferably 2-20
% By weight, 75-97% by weight of solid carrier, preferably 80
˜95% by weight and a surfactant in an amount of 1 to 10% by weight, preferably 2 to 5% by weight.

When used in the form of granules, the above-mentioned triazine derivative as an active ingredient and the above compound B are used.
1 to 50% by weight, preferably 3 to 20% by weight of a mixture with one compound selected from the group consisting of -1 to B-5,
Solid carrier 60-97% by weight, preferably 80-90% by weight, and surfactant 1-10% by weight, preferably 2-.
It may be prepared by blending at a ratio of 5% by weight.

Here, a fine powder of a mineral substance is used as the solid carrier, and examples of the fine powder of a mineral substance include oxides such as diatomaceous earth and slaked lime, phosphates such as apatite, and sulfates such as gypsum. , Talc, pyroferrite, clay, kaolin, bentonite, acid clay, white carbon,
Examples thereof include silicates such as quartz powder and silica stone powder.

As the liquid carrier, kerosene, mineral oil,
Paraffinic or naphthenic hydrocarbons such as spindle oil, aromatic hydrocarbons such as benzene, toluene, xylene, chlorinated hydrocarbons such as o-chlorotoluene, trichloromethane, trichloroethylene, cyclohexanol,
Amyl alcohol, alcohol such as ethylene glycol, alcohol ether such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ketone such as isophorone, cyclohexanone, cyclohexenyl-cyclohexanone, ether such as butyl cellosolve, dimethyl ether, methyl ethyl ether,
Examples thereof include esters such as isopropyl acetate, benzyl acetate and methyl phthalate, amides such as dimethylformamide, nitriles such as acetonitrile and propionitrile, sulfoxides such as dimethylsulfoxide, organic solvents such as mixtures thereof, water and the like.

Further, as the surfactant, anionic type (alkylbenzene sulfonate, alkyl sulfonate, lauric acid amide sulfonate, etc.), nonionic type (polyoxyethylene octyl ether, polyethylene glycol laurate, sorbitan alkyl ester) are used. Etc.), cationic type (dimethyllaurylbenzylammonium chloride, laurylamine, stearyltrimethylammonium chloride, etc.) or zwitterionic type (amino acid, betaine, etc.) can be used.

The lawn herbicide composition of the present invention also comprises
For the purpose of improving the properties of the preparation and enhancing the herbicidal effect, a polymer compound such as sodium alginate, carboxymethylcellulose, carboxyvinyl polymer, arabic gum, hydroxypropylmethylcellulose, or an auxiliary agent may be used in combination.

Such a lawn herbicide composition of the present invention exerts an excellent effect as a highly selective herbicide with no chemical damage by treating the lawn entirely before or after the occurrence of weeds. . Moreover, it has a high herbicidal effect not only on annual weeds but also on perennial weeds.

Further, the lawn herbicide composition of the present invention comprises:
Even for weeds or the like in orchards or non-agricultural land (factory areas, railway sites, roadsides, riverside sites, fallow land, etc.), soil and / or foliar treatment exerts an excellent control effect.

The lawn herbicide composition of the present invention is, in the case of a herbicide composition containing the above-mentioned triazine derivative and the above compound B-1, an active ingredient of about 5 to 500 g per 10 are, preferably 10 Apply ~ 200 g. In the case of a herbicidal composition containing the above-mentioned triazine derivative and one of the compounds B-2 to B-5, about 10 to 1,000 g, preferably 50 to 500 g, per 10 ares of the active ingredient is used. Apply.

Furthermore, the lawn herbicide composition of the present invention comprises:
If necessary, it can be mixed with other known herbicides, insecticides, fungicides, plant growth regulators, fertilizers and the like.

[0039]

EXAMPLES The present invention will now be described with reference to examples. First, the formulation method will be specifically described with reference to formulation examples. In addition, "part" in the following formulation examples means% by weight. The compounds shown in Table 1 (Compound Nos. A-1 to A-7) were used as the triazine derivative (Compound A), and the compounds shown in Table 2 were used as the specific compound (Compound B) to be mixed therein. (Compound Nos. B-1 to B-5) were used.

[0040]

[Table 1]

[0041]

[Table 2]

[0042]

[Table 3]

Formulation Example 1 [Wettable powder] Compound No. A-1 20 parts Compound No. B-1 2 parts Diatomaceous earth 60 parts White carbon 15 parts Sodium alkylbenzene sulfonate 2 parts Sodium lignin sulfonate 1 part The above components were mixed and uniformly pulverized to obtain 100 parts of a wettable powder.

Formulation Example 2 [Emulsion] Compound No. A-2 15 parts Compound No. B-3 15 parts Xylene 30 parts Dimethylformamide 20 parts Sorpol 2806B 20 parts (manufactured by Toho Chemical Industry, surfactant) The above components were uniformly dissolved and mixed to obtain 100 parts of an emulsion.

Formulation Example 3 [Granule] Compound No. A-5 1 part Compound No. B-5 1 part Bentonite 30 parts Talc 65 parts Sodium lignin sulfonate 3 parts The above components were mixed and uniformly pulverized to obtain 100 parts of granules.

Formulation Example 4 [Flowable Agent] Compound No. A-7 10 parts Compound No. B-2 15 parts Methylcellulose 0.3 parts Colloidal silica 1.5 parts Sodium lignin sulfonate 1 part Polyoxyethylene nonylphenyl ether 2 parts Water 70.2 parts The above is well mixed and dispersed, and the slurry mixture is wet pulverized. Thus, 100 parts of a stable flowable agent was obtained.

Formulation Example 5 [Wettable Powder] 97 parts of clay (trade name: Zyklite, manufactured by Zyklite Industry) as a carrier, alkylaryl sulfonate as a surfactant (trade name: Neoperex, Kao Atlas Co., Ltd.) 1.5 parts) and 1.5 parts of nonionic and anionic surfactants (trade name: Solpol 800A, manufactured by Toho Chemical Industry Co., Ltd.) are uniformly pulverized and mixed to obtain a carrier for a wettable powder. Obtained.

90 parts of this carrier for wettable powder and the triazine derivative (Compound Nos. A-1 to A-7) 1 shown in Table 1
0 part or the specific compound shown in Table 2 (Compound N
o. 10 parts of B-1 to B-5) were uniformly pulverized and mixed to obtain a wettable powder. The wettable powder carrier containing the triazine derivative obtained above and a wettable powder carrier containing a specific compound are uniformly mixed in a predetermined amount (active ingredient ratio) to form a wettable powder. Obtained.

Example 1 Upland soil was put in a Wagner pot of 1/2000 are, and a soil containing weed seeds of Poa annua, Mehibushi, Nogeshi, and dandelion to a thickness of 2 cm was filled and suppressed. Furthermore, the soybean of Korai grass was transplanted, and after watering, the predetermined amount of the herbicide obtained in the above Preparation Example 5 was suspended in water to obtain 100 liters /
A liquid amount equivalent to 10 ares was evenly sprayed on the upper surface of the grass. Then, the plants were grown in a greenhouse, and 40 days after the treatment, the phytotoxicity against herb turf and herbicidal effect were evaluated according to the following criteria. The results are shown in Table 3.

[0050]

[Table 4]

[0051]

[Table 5]

[0052]

[Table 6]

The criteria for determining the herbicidal effect in Table 3 are as follows. (Judgment criteria) Degree of herbicidal effect Herbicidal effect (killing rate) 0 Less than 5% (almost no effect) 15-20% 2 20-40% 3 40-70% 4 70-90% 5 90% or more (almost complete) Withered)

However, the above-mentioned herbicidal rate is obtained by measuring the above-ground raw grass weight of the chemical-treated area and the above-ground raw grass weight of the non-treated area by the following mathematical formula 1.

[0055]

[Equation 1]

The chemical damage in Table 3 was evaluated according to the following 6 grades. Degree of phytotoxicity 0 …… No phytotoxicity to Korai turf 1 …… No phytotoxicity to Korai turf 2 …… Slight phytotoxicity to Kourai turf 3 …… Respect to Korai turf 4 …… Remarkable chemical damage to Korai grass 5 ... Korai grass almost died

Example 2 Upland soil was put in a 1/2000 ares Wagner pot, and the soil containing weed seeds of Poa annua, Mehibushia, Nogeshi, and dandelion was filled and suppressed to a thickness of 2 cm, and sod of Korai grass was transplanted. . After growing in a greenhouse and growing each weed in the 3 to 4 leaf stage, the predetermined amount of the herbicide obtained in Production Example 5 above was suspended in water to give 100 liters /
The amount of liquid equivalent to 10 ares was sprayed evenly on the upper surface of the grass. Then, it was further grown in a greenhouse, and 40 days after the treatment, the phytotoxicity and herbicidal effect on Korai grass were determined according to the same criteria as those shown in Example 1. The results are shown in Table 4.

[0058]

[Table 7]

[0059]

[Table 8]

[0060]

[Table 9]

Several samples were extracted from the results shown in Table 4, and the synergistic effect of the triazine derivative and any one of the compounds B-1 to B-5 was determined by the following method. I searched for Nogeshi. Specifically, it was evaluated by Q _E (expected value) obtained from the following mathematical formula 2.

[0062]

[Equation 2]

In equation 2, Q _a , Q _b , Q _E
Is as follows. Q _a : Only the triazine derivative as an active ingredient, ag /
Measured value of herbicidal rate when treated at a liquid amount of 10 ares equivalent (%) Q _b: as an active ingredient only any one agent of the compound B-1~B-5, bg / 10 Earl equivalent liquid Measured value (%) of herbicidal rate when treated with amount Q _E : Expected value [Source: Limpel, LE, PH Schuldt and D. Lamont,
Proc. NEWCC, 16, 48-53 (1962))

Here, the triazine derivative and the compound B-
If the measured value (herbicidal rate) of the herbicide obtained by mixing with any one of 1 to B-5 was larger than Q _E (expected value), a synergistic action was exhibited in herbicidal activity. It turns out that. The results are shown as triazine derivatives (A-1 to A-
7) Table 5 shows the results of the measured values (herbicidal ratio) of the herbicide alone and the herbicide alone of any one of the compounds B-1 to B-5.

[0065]

[Table 10]

[0066]

[Table 11]

According to the results shown in Table 5, the measured value (herbicidal rate) of the herbicide obtained by mixing the triazine derivative and any one of the compounds B-1 to B-5 was It is larger than Q _E (expected value), and it can be seen that a synergistic effect was exerted on herbicidal activity. In particular, when compound B is used in combination with any one of B-1 and B-2, an effect of approximately 90% or more is exhibited, and it can be seen that it is an excellent herbicide.

Example 3 A field soil was placed in a Wagner pot of 1/2000 are and the soil containing weed seeds of Scutellaria baicalensis, Nogeshi and Dandelion was filled and compressed to a thickness of 2 cm, and sod of Korai grass was transplanted. It grows in the greenhouse and each weed has 5
After growing at the ~ 6 leaf stage, the predetermined amount of the herbicide obtained in Production Example 5 above was suspended in water, and sprayed uniformly on the upper surface of the grass at a liquid amount of 100 liter / 10 are. Then, it was further grown in a greenhouse, and 40 days after the treatment, the phytotoxicity and herbicidal effect on Korai grass were determined according to the same criteria as those shown in Example 1. The results are shown in Table 6.

[0069]

[Table 12]

[0070]

[Table 13]

[0071]

The lawn herbicide composition of the present invention comprises a triazine derivative as an active ingredient and the above compounds B-1 to B-.
When used in combination with one kind of compound selected from the group consisting of 5, it exhibits a high synergistic effect (herbicidal effect) which cannot be expected from its individual properties in a grass field such as a golf course and a park green space. Moreover, the lawn herbicide composition of the present invention exhibits a high herbicidal effect at a low dose. Furthermore, the lawn herbicide composition of the present invention has a wide range of suitable treatment times and has a broad spectrum of herbicidal activity. Further, the lawn herbicide composition of the present invention is highly safe and does not cause phytotoxicity. Therefore, the lawn herbicide composition of the present invention can be used very effectively as a herbicide in lawns such as golf courses and park green areas.

Next, an aspect of the present invention will be described below. (1). The triazine derivative represented by the general formula [I] and ethyl 5- [3- (4,6-dimethoxypyrimidin-2-yl) ureidosulfonyl] -1-methylpyrazole-4-carboxylate, 2- (4- Chloro-2-methylphenoxy) -propionic acid, N-1-ethylpropyl-3,4-dimethyl-2,6-
Dinitroaniline, N-butyl-N-ethyl-2,6-dinitro
-4-Trifluoro-methylaniline and 2-chloro-4,6-
A lawn herbicide composition containing, as an active ingredient, at least one compound selected from the group consisting of bisethylamino-1,3,5-triazine.

(2). As the triazine derivative represented by the general formula [I], one in which A in the general formula [I] represents the formula (b) is used, and the lawn herbicide composition according to the above (1) is used. .

(3). The triazine derivative represented by the general formula [I] is 2-amino-4- (α-fluoro,
α-Methylethyl) -6- [2- (3′-methylphenoxy) -1-methyl-ethylamino] -s-triazine, 2-amino-4- (α-fluoro, α-methylethyl) -6- [2- (3'-fluorophenoxy) -1-
Methyl-ethylamino] -s-triazine, 2-amino-4- (α-chloro, α-methylethyl) -6- [2-
(3 ′, 5′-Dimethylphenoxy) -1-methyl-ethylamino] -s-triazine or 2-amino-4- (α
-Fluoro, α-methylethyl) -6- [2- (3 ',
The lawn herbicide composition according to (1) above, which is 5′-dimethylphenoxy) -1-methyl-ethylamino] -s-triazine.

(4). The compound to be added to the triazine derivative represented by the general formula [I] is ethyl 5- [3- (4,6-
Dimethoxypyrimidin-2-yl) ureidosulfonyl]-
The lawn herbicide composition according to (1) above, which is 1-methylpyrazole-4-carboxylate or 2- (4-chloro-2-methylphenoxy) -propionic acid.

(5). The triazine derivative represented by the general formula [I] is 2-amino-4- (α-fluoro,
α-Methylethyl) -6- [2- (3′-methylphenoxy) -1-methyl-ethylamino] -s-triazine, 2-amino-4- (α-fluoro, α-methylethyl) -6- [2- (3'-fluorophenoxy) -1-
Methyl-ethylamino] -s-triazine, 2-amino-4- (α-chloro, α-methylethyl) -6- [2-
(3 ′, 5′-Dimethylphenoxy) -1-methyl-ethylamino] -s-triazine or 2-amino-4- (α
-Fluoro, α-methylethyl) -6- [2- (3 ',
5′-dimethylphenoxy) -1-methyl-ethylamino] -s-triazine, and the above general formula [I]
The compound to be added to the triazine derivative represented by is ethyl 5- [3- (4,6-dimethoxypyrimidin-2-yl) ureidosulfonyl] -1-methylpyrazole-4-carboxylate or 2- (4-chloro- The grass herbicide composition according to (1) above, which is 2-methylphenoxy) -propionic acid.

(6). The triazine derivative represented by the general formula [I] is 2-amino-4- (α-fluoro,
α-methylethyl) -6- [2- (3 ′, 5′-dimethylphenoxy) -1-methyl-ethylamino] -s-triazine, which is a triazine derivative represented by the above general formula [I]. The compounded compound is ethyl 5- [3- (4,6-
Dimethoxypyrimidin-2-yl) ureidosulfonyl]-
The lawn herbicide composition according to (1) above, which is 1-methylpyrazole-4-carboxylate or 2- (4-chloro-2-methylphenoxy) -propionic acid.

(7). With respect to 1 part by weight of the triazine derivative represented by the general formula [I], the compound B-1 was added in an amount of 0.
The lawn herbicide composition according to (1) above, which is blended in a proportion of 01 to 10 parts by weight.

(8). With respect to 1 part by weight of the triazine derivative represented by the general formula [I], the compounds B-2 to B-
The herbicidal composition for lawn according to the above (1), wherein 5 is blended in a proportion of 0.1 to 100 parts by weight.

Claims (2)

[Claims] 1. A compound represented by the general formula [I]: [Wherein A is the following formula (a): (However, Z represents an oxygen atom or a sulfur atom.) Or the formula (b): (However, X ² represents a methyl group or a fluorine atom, and n is 0.
Indicates an integer of ˜2. ), R ¹ represents a hydrogen atom or a methyl group, and X ¹ represents a fluorine atom or a chlorine atom. ]
A triazine derivative represented by and ethyl 5- [3- (4,6-dimethoxypyrimidin-2-yl) ureidosulfonyl] -1-
Methylpyrazole-4-carboxylate, 2- (4-chloro-
2-Methylphenoxy) -propionic acid, N-1-ethylpropyl-3,4-dimethyl-2,6-dinitroaniline, N-butyl
At least one compound selected from the group consisting of -N-ethyl-2,6-dinitro-4-trifluoro-methylaniline and 2-chloro-4,6-bisethylamino-1,3,5-triazine A herbicidal composition for lawns, which comprises and as an active ingredient. 2. The lawn herbicide according to claim 1, wherein the triazine derivative represented by the general formula [I] is one in which A in the general formula [I] represents the formula (b). Composition.