KR100336318B1 - Herbicide composition - Google Patents

Abstract

1-N, N-diethylcarbamoyl-3- (2, 4, 6-trimethylphenylsulfonyl) -1, 2, 4-triazole, 3- (4, 6-dimethoxy-1, 3, 5-triazin-2-yl) -1- [2- (2-methoxyethoxy) phenylsulfonyl | urea and 1- (α, α-dimethylbenzyl) -3- (p-tolyl) urea effective As a herbicide composition characterized by containing as a component, a remarkable synergistic herbicidal effect can be obtained, and furthermore, it can reduce the damage to rice.

Description

Herbicide composition

The present invention relates to herbicide compositions. Specifically, the present invention relates to a herbicide composition which has a broad weed spectrum for the strong weeds such as barley, broadleaf weeds, and perennial weeds, and also thoroughly reduces the damage to rice under extremely bad conditions such as sagitto.

1-N, N-diethylcarbamoyl-3- (2, 4, 6-trimethylphenylsulfonyl) -1, 2, 4-triazole (hereinafter referred to as "Compound A") used in the present invention is The present inventors have invented and are known herbicidally active compounds described in Japanese Patent Laid-Open No. 2-233665. In addition, 3- (4, 6-dimethoxy-1, 3, 5-triazin-2-yl) -1- [2- (2-methoxyethoxy) phenylsulfonyl] urea (hereinafter, "Compound B" Is a known herbicidal compound whose generic name is cynosulfuron. In addition, 1-((alpha), (alpha)-dimethylbenzyl) -3- (p-tolyl) urea (henceforth "compound C") is a well-known herbicidally active compound called general name dimelon.

So far, the herbicide composition of Compound A and Compound B is disclosed in Japanese Patent Application Laid-Open No. 2-67209, and the herbicide composition of Compound A and Compound C is disclosed in Japanese Patent Application Laid-Open No. 3-173808. Herbicide compositions of B and compound C are described in JP-A-2-258704, respectively.

Compound A exhibits excellent herbicidal effects on blood and the like, but the herbicidal effect is weak on broad-leaved weeds, Bangdongsan and weeds, etc., and a high dose is required to exhibit sufficient effects. In addition, extremely hard water leaked soil has problems such as weakening of rice.

Compound B shows an effect at extremely low doses such as broadleaf weeds, beta-bangs and snares, but has a small effect on blood, and increases the dose, causing weakness against rice.

Compound C has a high effect on algae and weeds such as tadpoles, lagoons, and beetles, but little effect on blood, broadleaf weeds, and snares.

On the other hand, the herbicide composition of Compound B and Compound C is disclosed in Japanese Patent Application Laid-Open No. 2-258704, but the combination with Compound A in which the combination is particularly effective in the present invention is not described at all, In addition, the herbicide composition of Compound B and Compound C shows high herbicidal effect on most of the weeds in the early stage of weed development, but it is difficult to completely kill the blood, especially the herbaceous effect on the growth of blood. There is a problem that is extremely low.

Recently, a bunch of perennial weeds, such as Pina, broadleaf weed, beetle garden, tadpole, and ladle, which are rice paddy, have narrowed herbicide spectrum, or complete weeding in the use of small amounts of herbicide. There is a tendency to not expect control. For this reason, the same or different herbicides must be used several times or in large quantities, and there are many problems such as weakness against rice and soil retention as well as effort and cost.

The inventors of the present invention find a safe herbicide that completely controls the weeds by one spray for the purpose of solving the above problems with the conventional herbicides, and also has a high safety against rice paddy and extremely low human toxicity. As a result of intensive studies, it was found that by combining Compound A, Compound B and Compound C, excellent herbicides which solved these problems can be obtained and completed the present invention.

The present invention, 1-N, N-diethylcarbamoyl-3- (2, 4, 6-trimethylphenylsulfonyl) -1, 2, 4-triazole (Compound A), 3- (4, 6 -Dimethoxy-1, 3, 5-triazin-2-yl) -1- [2- (2-methoxyethoxy) phenylsulfonyl "urea (compound B) and 1- (α, α-dimethylbenzyl ) -3- (p-tolyl) urea (Compound C) as an active ingredient.

The combined effect of each component in the herbicide composition of the present invention is shown in a wide range of mixing ratios, in which the compound B is mixed in an amount of 0.005 to 10 parts by weight and the compound C in an amount of 0.1 to 20 parts by weight based on 1 part by weight of the compound A. Useful herbicide compositions can be prepared. The herbicide composition of the present invention thus obtained exhibits a high effect by the soil treatment before weed germination and after germination, and can be safely used without substantially damaging rice.

The herbicide composition of the present invention may be sprinkled with the raw material itself, but may be mixed with various carriers, such as solid and liquid, which are used for the preparation of general pesticides, so as to be used more conveniently. V), emulsion, powder, granules, flowable formulations, and the like. Moreover, adjuvant, such as a dispersing agent, a diluent, an emulsifier, an electrodeposition agent, a humectant, an adsorbent, a thickener, an antifoamer, and a cryoprotectant, can also be added to a chemical | medical agent.

The carrier as used herein may be either a solid or a liquid, or a combination thereof. Specific examples thereof include talc, clay, bentonite, kaolin, diatomaceous earth, calcium carbonate, charcoal, starch, gum arabic, water, alcohol, kerosene, naphtha, xylene, cyclohexane, methylnaphthalene, benzene, acetone, dimethylformamide, glycol Ether, N-methylpyrrolidone, and the like.

Examples of the auxiliary agent include polyoxyethylene alkyl phenyl ether, polyoxyethylene sorbitan monooleate, ethylene oxide propylene oxide copolymer, lignin sulfonate, sorbitan ester, soaps, sulfated oils, alkyl sulfate ester salts, Petroleum sulfonates, dioctylsulfosuccinate salts, alkylbenzene sulfonic acids, aliphatic amine salts, quaternary ammonium salts, alkylpyridinium salts, alkyldimethylbetaines, alkylaminoethylglycines, polyglycol sulfate esters, alkylamine sulfides Phonic acid, isopropyl phosphate, carboxymethyl cellulose, polyvinyl alcohol, hydroxypropyl cellulose, ethylene glycol, xanthan rubber and the like.

When formulating the herbicide composition of the present invention, the compounding ratio of the total amount of the compounds A, B, and C, which are the active ingredients, the carrier, and the like is generally in a range such that the blending ratio of the active ingredient is 0.05 to 95% by weight based on the whole formulation. Can be chosen freely, but especially contains 0.5 to 70% by weight of the active ingredient, 1 to 99% by weight, preferably 30 to 95% by weight, 0 to 20% by weight of the adjuvant, preferably 1 to 15 Formulations containing weight percent are preferred. In addition, by using in combination with other herbicides, plant growth regulators, pesticides, fungicides, acaricides and the like pesticides, fertilizers and the like can be expected a wider range of effects.

When the herbicide composition of the present invention is actually used, it is obvious to those skilled in the art that the amount of the herbicide composition is properly selected according to the time of use, weather conditions, method of use, type of use, place of use, target weeds, target crops, and the like. The active ingredient of the herbicide composition is generally 5 to 5000 g per 10 ar, preferably 10 to 3000 g per 10 ar.

Example

Hereinafter, although the structure and effect of the herbicide composition of this invention are demonstrated in detail according to a preparation example and a test example, this invention is not limited to this.

[Example]

EXAMPLE 1 Preparation

Compound A 1 part by weight

0.1 part by weight of compound B

Compound C 2 parts by weight

2 parts by weight of sodium lignin sulfonate

Bentonite 20 parts by weight

Talc 74.9 parts by weight

The remaining components were mixed with Compound A, Compound B, and Compound C ground with a jet mill, coalesced by adding about 15% of water, and then granulated in an extrusion granulator with a scale size of 0.8 mm phi to obtain granules.

Preparation Example 2 Hydration

10 parts by weight of compound A

Compound B 2 parts by weight

20 parts by weight of compound C

2.5 parts by weight of alkyl sodium sulfate

2.5 parts by weight of polyoxyethylene alkyl phenyl ether

Clay 63 parts by weight

The remaining components were mixed with Compound A, Compound B, and Compound C sealed with a jet mill, and then pulverized and mixed again with a palpelizer to obtain a hydrating agent.

Preparation Example 3 Emulsion

10 parts by weight of compound A

Compound B 1 part by weight

Compound C 30 parts by weight

10 parts by weight of polyoxyethylene alkyl phenyl ether

Xylene 49 parts by weight

These components were mixed well and dissolved until they became uniform to obtain an emulsion.

[Test Example]

[Test Example 1]

Fill the 1/5000 ar Wagnerpot with paddy soil, harrow it with water, sow the seeds of blood, annual weed leaf (grass), tadpoles, and beetles. The tubers were transplanted and poured water up to 3 cm. The drug was treated by spraying a predetermined amount of granules obtained according to Formulation Example 1 by hand on the surface after 12 days of weed sowing. Management and upbringing were carried out in the greenhouse, and the herbicidal effect was observed and examined three weeks after the treatment. The results are shown in Table 1.

In addition, the numerical value in a table | surface represents the herbicidal effect and the weakness with respect to rice, and is specifically as follows.

[Test Example 2]

A wagner pot of 1/5000 ar was filled with a large paddy soil (soil), harrowed by adding water, transplanted two-leaf rice, and poured water up to 5 cm. In the treatment of the drug, 1 day after rice transplantation, a predetermined amount of the hydrating agent obtained according to Preparation Example 2 was diluted in 5 ml of water and added dropwise to the pot. For three days from the day after the treatment, an amount of water equivalent to a depth of 3 cm was leaked from the bottom of the pot. Thereafter the water depth was maintained at 3 to 4 cm. Management and upbringing were carried out in a greenhouse, and after 30 days of drug treatment, the weight of the surface by-products of rice was measured to determine the ratio to the untreated areas. The results are shown in Table 2.

[Test Example 3]

The rice paddies were divided into 10 square meters of one sphere, and two-leaf rice was planted shallowly (depth of transplantation 1cm).

Weeds were sown seeds of annual, broad-leaved weeds (knotweed, node flowers) and tadpoles, and the beetle garden mixed with tubers of Olme. Treatment of the drug was carried out by diluting a predetermined amount of the hydrating agent obtained according to Formulation Example 2 after 3 days after rice transplantation or 13 days after rice transplantation with water and uniformly spraying water over the entire surface with a watering can. The depth of the test was maintained at 3 to 5 cm. Irradiation was performed by observation 30 days after drug treatment. Table 3 shows the results of the drug treatment after 3 days of rice transplantation and Table 4 shows the results of the drug treatment after 13 days of rice transplantation. In addition, the numerical value in a table | surface represents the herbicidal effect and the damage to rice, and is the same as what was shown in Test Example 1.

By the herbicide composition of this invention which mix | blended said compound A, B, and C, an extremely remarkable synergistic herbicidal effect is acquired compared with the case where each is applied individually and in combination, and it reduces remarkably weakness about rice. You can. Moreover, it can be said that it is very useful for the annual weeds and the perennial weeds, since they exhibit excellent herbicidal effects in the treatment of the growing season before their occurrence and can kill many kinds of problem weeds at low doses.

Claims (1)

1-N, N-diethylcarbamoyl-3- (2, 4, 6-trimethylphenylsulfonyl) -1, 2, 4-triazole, 3- (4, 6-dimethoxy-1, 3, 5-triazin-2-yl) -1- [2- (2-methoxyethoxy) phenylsulfonyl] urea and 1- (α, α-dimethylbenzyl) -3- (p-tolyl) urea are effective A herbicide composition characterized as containing as a component.