JP2001233718A - Herbicide composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a herbicide composition effective for controlling a wide variety of weeds over a wide range of application period with a relatively small quantity of active components and keeping the effect for a long period. SOLUTION: The objective composition is a combination of at least one kind of soil and foliar treating herbicide with a specific N-([1,2,4]triazoloacinil) pyrimidinesulfonamide compound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to a herbicidal composition, and more particularly to a herbicide for a paddy field which has a long-lasting effect and exhibits an excellent control effect on many problem weeds at a low application rate, a wide range of suitable treatment periods. And the like.

[0002]

2. Description of the Related Art Conventionally, various compounds and admixtures have been known as herbicides for paddy fields. Recently, admixtures that can control various weeds in a single treatment called a single treatment have been developed. Is being developed. However, this type of herbicide currently in use has five points to be improved. 1) Many compounds are mixed. 2) The amount of the active ingredient is large. 3) The appropriate treatment width is narrow. 4) Insufficient control of important weeds, especially perennial grass species such as nobies and fireflies, and perennial intractable paddy field weeds such as kuroguwai, mizuyayatsuri, urikawa and omodaka. 5) The duration of the effect is short.

[0003] Accordingly, there is a demand for the development of a long-lasting herbicide for paddy fields with a low application rate of a smaller number of compounds, a wide range of suitable treatment periods, an excellent weed control effect, and a long-lasting effect. For example, as a one-shot treatment agent, a herbicide containing benthiocarb, bensulfuron-methyl, mefenacet (all of which is a general name), or a herbicide containing pyrazosulfuron, esprocarb, pretilachlor, dimetamethrin, etc. Used. This herbicide is 10
Need more than 200g dose per are,
If the appropriate treatment period is narrow and the treatment date is too early, the rice is likely to cause phytotoxicity and, moreover, the duration of the effect is insufficient.
On the other hand, if the treatment date is slightly late, the effect of controlling important weeds, particularly the effect on nobies and fireflies, will be insufficient. In addition, at any treatment time, the control effect on perennial weeds such as black clover, sword flies and urikawa becomes insufficient.
Therefore, an object of the present invention is to use a relatively small amount of a compound, at a relatively low application rate, a wide range of suitable treatment periods, show an excellent weed control effect, and have a long-lasting effect on paddy field weeding. An object of the present invention is to provide a novel herbicidal composition which is particularly excellent as an agent.

[0004]

According to the present invention, there is provided (A) a compound represented by the following general formula:

[0005]

Embedded image

Wherein Q represents CH or N, R is a lower chain hydrocarbon group which may contain one or more halogen atoms or oxygen atoms, and (B) at least one kind of soil And a foliar treatment herbicide.

The herbicidal compositions of the present invention allow the use of relatively low compound combinations and relatively low active ingredient amounts. In addition, the suitable treatment period becomes wide, and even if the treatment date is slightly delayed, sufficient weed control can be achieved. Furthermore, a wide range of weed species can be controlled, for example,
With regard to difficult-to-control weeds such as Spodoptera mori, Urikawa and Omodaka, the control effect is surprisingly improved. In addition, it has an excellent characteristic that it has a long residual effect and shows no phytotoxicity to crops such as paddy rice, and is particularly effective as a paddy field herbicide.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the component (A) which is an active ingredient of the herbicidal composition of the present invention, R in the general formula is a lower chain hydrocarbon group which may contain one or more halogen atoms or oxygen atoms. There, here, "lower" means carbon number 1-6,
"Chain" includes linear and branched, and the hydrocarbon group includes an alkyl group, an alkylene group and the like. Preferable R includes an alkyl group or an alkylene group or an alkyl group having one or more fluorine atoms or halogen atoms or one lower alkoxy group, and more preferable R is CH ₂ CHF ₂ , CH ₂ —CH ＝ CH ₂ , CH ₂ CH
₂ F, C ₃ H ₇ (n), CH ₂ CH ₂ OCH ₃ , CH _{2
CF 3, CH (CH 2 F} ) 2, CH 2 0C 2 H 5, CH
₂ CHF ₂ , C ₃ H ₇ (i), C ₄ H ₉ (n), CH ₂
—CH ₂ Cl.

[0009] There When showing the general formula (I) in basis preferred component (A) are: Compound _{Q R A1 CH CH 2 CH 2} F A2 CH C 3 H 7 (n) A3 C- _{H CH 2 CH 2 -OCH 3 A4} CH CH 2 CF 3 A5 CH CH- (CH 2 F) 2 A6 CH CH 2 -OC 2 H 5 A7 CH CH 2 CHF 2 A8 C- _{H C 3 H 7 (i)} A9 CH C 4 H 9 (n) A10 CH CH 2 -CH 2 Cl A11 n CH 2 CH 2 F A12 n CH 2 -CH = CH 2

As the component (A), a single compound is usually used. The soil and foliar treatment herbicide which are the other active ingredients of the herbicide of the present invention can be selected from known herbicides. Specific examples are as follows. 1. Generic name: 2,4-D Generic name: MCPB (2-methyl-4-chlorophenoxybutyric acid) Generic name: propanil Generic name: Butachlor (B2) Generic name: bromobutide Generic name: fentrazamide 7. Generic name: Chlornitrophen Generic name: tenylchlor 9. Generic name: pretilachlor (B3) Generic name: Mephena set (B8) Generic name: azimusulfuron 12. Generic name: imazosulfuron 13. Generic name: ethoxysulfuron 14. Generic name: cyclosulfamuron Generic name: sinosulfuron Generic name: pyrazosulfuron-ethyl 17. Generic name: bensulfuron-methyl Generic name: Anilofos 19. Generic name: Butamiphos 20. Generic name: esprocarb 21. Generic name: dimepiperate (B4) Generic name: pyributicarb 23. Generic name: Benthiocarb 24. Generic name: Molinate 25. Generic name: pyrazolate Generic name: pyraflufen-ethyl 27. Generic name: Benzofenap Generic name: dimethamethrin Generic name: Simesulin 30. Generic name: promethrin Generic name: Oxazichrome mefone 32. NOJ-100 (4- (4,6-dimethoxy-pyrimidin-2-ylsulfonyl) -3-methyl-3H-isobenzofuran) 33. Generic name: Flumioxazine 34. Generic name: Ben Slide 35. Generic name: benzobicyclone Generic name: indanophan 37. Generic name: Etobenzanide 38. Generic name: oxadiazon Generic name: oxadialgyl (B6) Generic name: trifluralin 41. Generic name: carfentrazone-ethyl (B10) 42. Generic name: Kafenstroll (B7) Generic name: quinoclamin Generic name: glyphosate Generic name: cumylurone Generic name: Kromeprop 47. Generic name: diquat Generic name: dithiopyr Generic name: cyhalofop butyl 50. Generic name: Daimron (B9) Generic name: naproanilide 52. Generic name: Bispyribac sodium 53. Generic name: Bifenox Generic name: pyrazoxifen (B5) Generic name: pyriminopack methyl 56. Generic name: phenothiol Generic name: Bentazon 58. Generic name: pen @ methalin 59. Generic name: pentoxazone (B1) Generic name: Ben Fressate

Any of these herbicides of component (B) alone cannot control the above-mentioned difficult-to-control herbaceous species such as Kuroguwai and Mizusayatsuri. Each herbicide can control only a small portion of the variety of weeds that occur in paddy fields, and no herbicide has a broad spectrum so that one compound can completely control all major weeds. In addition, there is a disadvantage that the effect is weakened as the growth of weeds progresses.

On the other hand, by combining the above-mentioned component (A), the above-mentioned drawbacks can be improved to an extent that cannot be predicted from a general combination of active ingredients, and the efficacy can be maintained for a long period of time and the growth of It exerts a surprising synergistic effect of being able to kill advanced weeds, and is particularly effective for paddy field difficult-to-control weeds for which effective herbicides are desired without herbicides that can be controlled.

Particularly, the following combinations are effective. Component (A)
And component numbers 4, 6, 8, 9, 10, 18, 19, 20,
21, 22, 23, 24, 29, 31, 34, 36, 3
7, 39, 42, 48, 59, more preferably 6, 1
By combining the components (B) of 0, 31, 42 and 48, the sustainability of the effect is particularly enhanced. Component (A) and component numbers 1, 2, 3, 7, 33, 38, 40, 44, 47,
49, 53, 57, 59, 60, more preferably 1,
By combining the components (B) of 2, 40, 49, 53 and 59, the width of the processing time can be particularly widened. Component (A)
And component numbers 1, 2, 5, 11, 12, 13, 14, 1
5, 16, 17, 25, 26, 27, 28, 30, 3,
2, 35, 41, 43, 45, 49, 50, 51, 5
2, 54, 55, 56, 57, 60, more preferably 5, 16, 17, 25, 28, 35, 45, 50, 60
By combining the component (B), the types of weeds that can be weeded in particular are expanded.

The herbicidal composition of the present invention is adjusted by appropriately selecting the type and amount of the active ingredient according to the conditions of the place where the herbicide is applied. For example, the herbicidal composition of the present invention contains the active ingredient in a total amount of 0.1 to 85% by weight, preferably 0.2 to 50% by weight, more preferably 0.3 to 40% by weight.
% By weight. The mixing ratio of the active ingredients can be selected within a considerably wide range. For example, the mixing ratio of component (A) to component (B) (component (A): component (B)) is generally 1: 1, 0.1-100, more preferably 1: 0.1
To 50, more preferably 1: 0.1 to 5.

The herbicide of the present invention can be sprayed on the drug substance itself, but may be mixed with a carrier and, if necessary, other auxiliaries to form a preparation usually used as a herbicide, for example, powder, coarse powder , Fine granules, granules, wettable powders, wettable powders,
Emulsions, aqueous solutions, aqueous solvents, so-called jumbo preparations, flowable preparations, microcapsules, oil suspensions and the like are used. At this time, several other herbicides, insecticides,
It can be used in combination with fungicides, plant growth regulators, fertilizers and the like. In particular, by blending one or more other herbicides, it is possible to broaden the herbicidal spectrum or to maintain the efficacy for a long period of time.

Suitable solid carriers for use in preparing the herbicidal composition of the present invention include, for example, clays represented by kaolinites, montmorillonites, or atabalgites, talc, mica, medicinal wax Inorganic substances such as, calcite, vermiculite gypsum, calcium carbonate, dolomite, diatomaceous earth, magnesium, lime, phosphorus lime, zeolite, silicic anhydride, synthetic silicate, calcium, etc .; soybean flour, tobacco flour, walnut flour, flour, Wood flour,
Vegetable organic substances such as kinako, starch, microcrystalline cellulose, etc .; inorganic or organic substances such as potassium chloride, sodium chloride, ammonium chloride, ammonium sulfate, ammonium nitrate, urea, citric acid, sodium citrate, sodium tartrate, glucose and fructose; Synthetic or natural polymer compounds such as coumarone resin, petroleum resin, alkyd resin, polyvinyl vinyl salt, polyalkylene glycol, ketone resin, ester gum, cobal gum, and dammar gum; waxes such as carnauba wax and beeswax; urea; .

Suitable liquid carriers used for preparing the herbicidal composition of the present invention include paraffinic or naphthine hydrocarbons such as kerosene, mineral oil, spindle oil and white oil; benzene, toluene, xylene, Aromatic hydrocarbons such as ethylbenzene, cumene, and methylnaphthalene; chlorinated hydrocarbons such as carbon tetrachloride, chloroform, trichloroethylene, monochlorobenzene, o-chlorotoluene; ethers such as dioxane and tetrahydrofuran; acetone; methyl ethyl ketone; Ketones such as diisobutyl ketone, cyclohexanone, acetophenone and isophorone; esters such as ethyl acetate, amyl acetate, ethylene glycol acetate, diethylene glycol acetate, dibutyl maleate and ethyl succinate; Ethanol, n- hexanol,
Alcohols such as ethylene glycol, diethylene glycol, cyclohexanol, and benzyl alcohol; ether alcohols such as ethylene glycol ethyl ether, ethylene glycol phenyl ether, diethylene glycol ethyl ether, and diethylene glycol butyl ether; methyl oleate, butyl oleate;
Fatty acid alcohol esters such as isopropyl myristate and palm fatty acid; polybasic alcohol esters such as diisobutyl adipate, ditridecyl phthalate and dinoralkylalkyl phthalate; epoxidized fatty acids such as octyl fatty acid octyl ester and butyl epoxidized fatty acid Esters; polar solvents such as dimethylsulfformamide, dimethylsulfoxide and N-methylpyrrolidone; and water.

As a suitable surfactant used for preparing the herbicidal composition of the present invention, an anionic or nonionic surfactant or a water-soluble polymer can be mainly used. Examples of the anionic surfactant, C ₁₂ -C ₁₈ alkyl sulfate (Na salt, K salt, ammonium salt, and various amine salts), polyoxyethylene C ₈ -C ₁₂ alkylphenyl ether sulfate (Na salt ,
Ammonium salt, various amine salts, etc.), polyoxyethylene C ₁₂ -C ₁₈ alkyl ether sulfate (Na salt, ammonium salt, various amine salts, etc.), polyoxyethylene polyoxypropylene block polymer sulfate (Na
Sulfate-based anionic surfactants such as salts, ammonium salts, various amine salts, etc .; dodecylbenzene sulfonates (Na salts, ammonium salts, various amine salts, etc.);
Mono- - or di -C ₈ -C ₁₂ alkyl naphthalene sulfonate (Na salt, and ammonium salts), naphthalene sulfonate (Na salt, etc.) - formalin condensate, di -
Polyoxyethylene lauryl ether phosphate ammonium salts,; C ₆ -C ₈ alkyl sulfosuccinate (Na salt, etc.), lignin sulfonate (Na salt, such as Ca salt) sulfonate anionic surfactants such as
Examples include polyoxyethylene ether-type phosphate ester-based anionic surfactants such as polyoxyethylene nonylphenyl ether phosphate sodium salt.

[0019] The nonionic surfactant includes, for example, polyoxyethylene nonylphenyl ether, polyoxyethylene styryl phenyl ether, polyoxyethylene benzyl phenyl ether, polyoxyethylene sorbitan alkylate, polyoxyethylene C ₁₂ ~
Polyoxyethylene type nonionic surfactant such as _C18 fatty acid ester; Surfynol 104, 104A, 104
E, 104H, TG, TG-E, PC, 61, 82, 4
And acetylene glycol-based surfactants known under trade names such as 40, 465, and 485 (all manufactured by Air Products).

Further, examples of the water-soluble polymer substance include polyvinyl alcohol, carboxymethylcellulose, alginate, polyacrylate, starch, enzyme-decomposed dextrin and isoban 1-1, 1-2, 1-3,
2-1, 2-2, 2-3, 3-1, 3-2, 3-3, S
Isobutyl maleate copolymer salts (Na salt, K salt, Ca salt) known under trade names such as F-837 and SF-842 (all manufactured by Kuraray Isoprene Chemical Co., Ltd.)
Ammonium salts, various amine salts, etc.).
Furthermore, in some cases, a cationic surfactant or a zwitterionic surfactant can be used.

The surfactants described above can be used alone or in combination of two or more.
In addition, the granule composition may contain other auxiliaries commonly used in pesticides, such as spreading agents, preservatives, emulsifiers, decomposition inhibitors,
An anti-solidification agent, an activity enhancer (for example, soybean lecithin or vegetable oil) or the like can be added in an appropriate amount as necessary, and if necessary, an insecticide, an acaricide, a nematicide, a bactericide. , Antivirals, triggers, plant growth regulators,
It can be mixed or used in combination with agricultural chemicals such as fertilizers.

[0022]

The invention will now be illustrated by way of examples. The compound number means the compound number shown above. Formulation Example 1 (granules) Compound A7 of the present invention: 0.35 parts by weight, compound B8: 10
Parts by weight, Neoperex (trade name, manufactured by Kao, sodium dodecylbenzenesulfonate): 2 parts by weight, Sun Extract P-252 (manufactured by Nippon Paper Industries, sodium ligninsulfonate): 3 parts by weight, Gohsenol GL-05S (Nippon Gosei) After well mixing 2 parts by weight of PVA), 30 parts by weight of bentonite and 52.65 parts by weight of clay,
Add an appropriate amount of water, knead, and extrude with a granulator 1.2m
m, and dried at a temperature of 50-70 degrees to obtain granules.

Formulation Example 2 (Floable Agent) Compound A9 of the present invention: 0.7 parts by weight, Compound B7: 3 parts by weight, Sun Extract P-252 (trade name, as described above): 5
Parts by weight, propylene glycol: 8 parts by weight, anti-home E-20 (manufactured by Kao, silicone-based antifoaming agent): 0.2 parts by weight, Cipher C (manufactured by Daiichi Kogyo Seiyaku, 2-hydroxyethylaminoethyl alcohol): 0.1 parts by weight of water: 8
After adding and mixing 2.7 parts by weight and pulverizing with a sand grinder, 0.3 part by weight of xanthan gum was added to obtain a flowable agent.

Formulation Example 3 (Emulsion) Compound A6 of the present invention: 3 parts by weight, Compound B10: 2 parts by weight, Newcargen AB-1 (manufactured by Takemoto Yushi, anion.
An emulsion was obtained by mixing and dissolving 10 parts by weight of nonionic mixed surfactant and 85 parts by weight of Solvesso 150 (manufactured by Exxon, aromatic solvent).

The usefulness of the mixture of the present invention as a herbicide will be specifically described in the following tests. Test Example 1 Herbicidal effect test under flooded condition-initial stage After placing alluvial soil in a 1 / 5,000 arel Wagner pot, water was added and mixed to obtain a flooded condition at a depth of 3 cm. Seeds of barnyard grass, firefly, and eel were sown, and tubers of Krogui were inserted at a soil depth of 1 cm. On the day when the millet reached the first leaf stage, a predetermined amount of the reagent agent was directly sprayed on the pot using granules prepared according to the above-mentioned formulation. Three weeks after the chemical treatment, the above-ground live weight of each weed was measured, and the ratio of the untreated plot to 0 to 10% was 10, 11, 11 to 20% was 9, 21,
30% to 8, 31 to 40% to 7, 41 to 50% to 6,5
1 to 60% was represented by 5, 61 to 70% by 4, 71 to 80% by 3, 81 to 90% by 2, and 91 to 100% by 1.

[0026]

[Table 1]

Test Example 2 Test of herbicidal effect under flooded condition-Middle stage After placing alluvial soil in a 1 / 5,000 arel Wagner pot, water was added and mixed to obtain a flooded condition at a depth of 3 cm. Seeds of barnyard grass, firefly, and eel were sown, and tubers of Krogui were inserted at a soil depth of 1 cm. On the day when the millet reached the 3rd leaf stage, a predetermined amount of the reagent was treated with a mespipet using a flowable prepared according to the above-mentioned formulation. Three weeks after the chemical treatment, the above-ground live weight of each weed was measured, and the ratio of the untreated section to 0 to 10% was changed to 10, 11 to 20%.
9, 21 to 30% 8, 31 to 40% 7, 41 to 5
0% is 6, 51 to 60% is 5, and 61 to 70% is 4, 71.
80% to 3, 81 to 90% to 2, 91 to 100% to 1
It was expressed by.

[0028]

[Table 2]

Test Example 3 Test of herbicidal effect in foliage treatment-late stage After placing alluvial soil in a 1 / 5,000 arel Wagner pot, water was added and mixed to obtain a water-impregnated condition at a depth of 3 cm. Seeds of barnyard grass, firefly, and eel were sown, and tubers of Krogui were inserted at a soil depth of 1 cm. On the day when the millet reached the four-leaf stage, the water in the pot was dropped, and then a predetermined amount of the reagent was adjusted to 10 using an emulsion prepared according to the above-mentioned formulation.
Foliage treatment was performed with a spraying water amount of 0 liter / 10 are. 2
After a day, the water depth was returned to the original 3 cm, and the condition was controlled under flooded conditions. Three weeks after the chemical treatment, the above-ground live weight of each weed was measured, and the ratio to the untreated plot was 0 to 10%, 10, 11 to 20% was 9, and
21 to 30% 8, 31 to 40% 7, 41 to 50% 6, 51 to 60% 5, 61 to 70% 4, 71 to 80
% Was represented by 3, 81 to 90% by 2, and 91 to 100% by 1.

[0030]

[Table 3]

Test Example 4 Rice phytotoxicity test in flooded condition-initial stage After placing alluvial soil in a 1 / 5,000 arel Wagner pot, water was added and mixed to obtain a flooded condition with a water depth of 2 cm. Rice seedlings at the 2.5 leaf stage were transplanted to a depth of 2 cm.
On the day after the rice transplantation, a predetermined amount of the reagent agent was directly sprayed on the pot using the granules prepared according to the above-mentioned prescription. Three weeks after the chemical treatment, the above-ground living weight of rice was measured, and the ratio of the untreated group to 0 to 10% was 10, 10, 11 to 20% was 9, 21, to 23.
0% is 8, 31 to 40% is 7, 41 to 50% is 6, 51
６０60% to 5, 61 to 70% to 4, 71 to 80% to 3,
81 to 90% was represented by 2, and 91 to 100% by 1.

[0032]

[Table 4]

[0033]

According to the herbicidal composition of the present invention, the herbicidal composition of the present invention has a relatively small number of active ingredients and a low application rate, such as two to three kinds, so that the suitable treatment period can be widened, and especially the treatment date is slightly reduced. Even if delayed, weed control becomes sufficient, the weed spectrum becomes wide, for example, for difficult-to-control weeds such as blackfish, shrimp, urikawa, omodaka, etc., the control effect is surprisingly good, and the remaining effect period is long, and It has an excellent feature that there is no phytotoxicity in crops such as paddy rice.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4H011 AB02 BA01 BA06 BB09 BB10 BC03 BC07 BC19 DA02 DA15 DA16 DH03 DH10 DH14 DH25

Claims (7)

[Claims] (A) A general formula: Wherein Q represents CH or N, and R is a lower-chain hydrocarbon group optionally containing one or more halogen atoms or oxygen atoms, and (B) at least one kind of soil and foliage treatment A herbicidal composition comprising a herbicide. 2. The herbicidal composition according to claim 1, wherein R is an alkyl group or an alkylene group, or an alkyl group having one or more fluorine atoms or halogen atoms or one lower alkoxy group. 3. R is CH ₂ CHF ₂ or CH ₂ —CH =
_3. The herbicidal composition according to claim ₂ , wherein the composition is CH2. 4. R is CH_TwoCH_TwoF, C_ThreeH₇(N),
CH_TwoCH_TwoOCH _Three, CH_TwoCF_Three, CH (CH
_TwoF)_Two, CH_Two0C_TwoH_Five, CH_TwoCHF_Two, C_ThreeH
₇(I), C_FourH₉(N), CH_Two-CH_TwoCl
The herbicidal composition according to claim 2. 5. The method according to claim 1, wherein the herbicide for soil and foliage treatment is 2,4-D.
MCPB, propanil, butachlor, bromobutide,
Fentrazamide, chlornitrophen, tenylchlor, pretilachlor, mefenacet, azimsulfuron, imazosulfuron, ethoxysulfuron, cyclosulfamuron, sinosulfuron, pyrazosulfuron
Ethyl, bensulfuron-methyl, anilofos, butamiphos, esprocarb, dimepiperate, pyributicarb, benthiocarb, molinate, pyrazolate, pyraflufen-ethyl, benzofenap, dimethamethrin, simmethrin, promethrin, oxadiclomehon, NOJ-100, flumioxazin, benzlide, benzopicron , Indanophane, ethobenzanide, oxadiazon, oxadialgyl, trifluralin, carfentrazone-ethyl, cafenstrole, quinoclamin, glyphosate, cumyluron, clomeprop, diquat, dithiopyr, cyhalofop butyl, dimelone, naproanilide, bispyribac
The herbicidal composition according to any one of claims 1 to 4, wherein the herbicidal composition is selected from the group consisting of sodium, bifenox, pyrazoxifene, pyriminopac-methyl, phenothiol, bentazone, pendimethalin, pentoxazone and benfresate. 6. Component (A) and component (B) in a ratio of 1: 0.1
The herbicidal composition according to any one of claims 1 to 5, wherein the herbicidal composition is blended in a weight ratio of 100 to 100. 7. The method according to claim 1, further comprising a surfactant.
The herbicidal composition according to any one of claims 6 to 10.