GB2053683A - Herbicidal mixtures and compositions - Google Patents
Herbicidal mixtures and compositions Download PDFInfo
- Publication number
- GB2053683A GB2053683A GB8021372A GB8021372A GB2053683A GB 2053683 A GB2053683 A GB 2053683A GB 8021372 A GB8021372 A GB 8021372A GB 8021372 A GB8021372 A GB 8021372A GB 2053683 A GB2053683 A GB 2053683A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formula
- compound
- component
- mixture
- herbicidal
- Prior art date
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- Withdrawn
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- 239000000203 mixture Substances 0.000 title claims abstract description 46
- 230000002363 herbicidal effect Effects 0.000 title claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims abstract description 31
- 240000007594 Oryza sativa Species 0.000 claims abstract description 9
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims abstract description 8
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 8
- 235000009566 rice Nutrition 0.000 claims abstract description 8
- 125000005843 halogen group Chemical group 0.000 claims abstract description 6
- 244000038559 crop plants Species 0.000 claims abstract description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 125000006273 (C1-C3) alkyl group Chemical group 0.000 claims abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 3
- 239000001257 hydrogen Substances 0.000 claims abstract description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 3
- 239000001301 oxygen Substances 0.000 claims abstract description 3
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 6
- 230000008635 plant growth Effects 0.000 claims description 4
- 229910052717 sulfur Chemical group 0.000 claims description 3
- 239000011593 sulfur Chemical group 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000306 component Substances 0.000 claims 7
- 241000196324 Embryophyta Species 0.000 abstract description 10
- 230000002195 synergetic effect Effects 0.000 abstract description 8
- 125000003342 alkenyl group Chemical group 0.000 abstract description 2
- 125000000304 alkynyl group Chemical group 0.000 abstract description 2
- 239000000969 carrier Substances 0.000 abstract description 2
- 125000004455 (C1-C3) alkylthio group Chemical group 0.000 abstract 1
- 125000006274 (C1-C3)alkoxy group Chemical group 0.000 abstract 1
- 239000005864 Sulphur Chemical group 0.000 abstract 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000009472 formulation Methods 0.000 description 6
- 239000008187 granular material Substances 0.000 description 5
- 239000004009 herbicide Substances 0.000 description 5
- 239000004495 emulsifiable concentrate Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 241000234653 Cyperus Species 0.000 description 3
- 241000192043 Echinochloa Species 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000013543 active substance Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000080 wetting agent Substances 0.000 description 3
- 244000108484 Cyperus difformis Species 0.000 description 2
- 241001290564 Fimbristylis Species 0.000 description 2
- 241000721671 Ludwigia Species 0.000 description 2
- 240000000178 Monochoria vaginalis Species 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical class CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 241001233957 eudicotyledons Species 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- ZMESHQOXZMOOQQ-UHFFFAOYSA-N 1-(naphthalen-1-ylmethyl)naphthalene Chemical compound C1=CC=C2C(CC=3C4=CC=CC=C4C=CC=3)=CC=CC2=C1 ZMESHQOXZMOOQQ-UHFFFAOYSA-N 0.000 description 1
- GXJQMKFJQFGQKV-KHPPLWFESA-N 2-[methyl-[(z)-octadec-9-enoyl]amino]ethanesulfonic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)N(C)CCS(O)(=O)=O GXJQMKFJQFGQKV-KHPPLWFESA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 240000004472 Dopatrium junceum Species 0.000 description 1
- 244000283628 Elatine triandra Species 0.000 description 1
- 241000759199 Eleocharis acicularis Species 0.000 description 1
- 241000759118 Eleocharis kuroguwai Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 241000064140 Lindernia Species 0.000 description 1
- 235000003990 Monochoria hastata Nutrition 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 244000155504 Rotala indica Species 0.000 description 1
- 241001408202 Sagittaria pygmaea Species 0.000 description 1
- 240000005817 Schoenoplectiella supina Species 0.000 description 1
- 244000273618 Sphenoclea zeylanica Species 0.000 description 1
- 235000017967 Sphenoclea zeylanica Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- -1 alkyl phenylsulfonates Chemical class 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000003042 antagnostic effect Effects 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- KTRGHLZBDIJZLQ-UHFFFAOYSA-N elatine Natural products CCN1CC2(CCC(OC)C34C2C(OC)C5(OCOC56CC(OC)C7CC3(O)C6C7OC)C14)OC(=O)c8ccccc8N9C(=O)CC(C)C9=O KTRGHLZBDIJZLQ-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 125000001117 oleyl group Polymers [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- KZOJQMWTKJDSQJ-UHFFFAOYSA-M sodium;2,3-dibutylnaphthalene-1-sulfonate Chemical compound [Na+].C1=CC=C2C(S([O-])(=O)=O)=C(CCCC)C(CCCC)=CC2=C1 KZOJQMWTKJDSQJ-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
- A01N57/14—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing aromatic radicals
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Herbicidal mixtures having synergistic properties contain (A) a compound of the formula <IMAGE> in which each Hal is a halogen atom, each of R1, R2 and R3 is a C1-C3 alkyl group, X is oxygen or sulphur, and n is 1 or 2; together with either (B) a compound of the formula <IMAGE> in which each R4 is a halogen atom or a trifluoromethyl group, R5 is hydrogen or a C1-C4 alkyl group, R6 is a C1-C4 alkyl, C3-C6 alkenyl, C3-C6 alkynyl, hydroxy, C1-C3 alkoxy or C1-C3 alkylthio - C1-C3 alkyl group, and n1 is 1 or 2; or (C) a compound of the formula <IMAGE> in which R7 is a C1-C4 alkyl group. Herbicidal compositions containing such mixtures and one or more inert carriers are useful for combating weeds in crop plants, especially rice.
Description
SPECIFICATION
Herbicidal mixtures and compositions
This invention relates to herbicidal mixtures and compositions.
The present invention provides herbicidal mixtures containing (A) a compound of the formula
in which the or each Hal is a halogen atom,
each of R1, R2 and R3 is a C1 -C3 alkyl group,
X is oxygen or sulfur, and n is 1 or2; together with either (B) a compound of the formula
in which the or each R4 is a halogen atom or a trifluoromethyl group, Rs is hydrogen or a C1 -C4 alkyl group, R6 is a C,-C4 alkyl, C3-C6 alkenyl, C3-C6 alkynyl, hydroxy, C1 -C3 alkoxy or C,-C3 alkylthio-C1-C3 alkyl group, andn1 is 1 or2;
or (C) a compound of the formula
in which R7 is a C1-C4 alkyl group.
The present invention also provides herbicidal compositions comprising such mixtures together with one or more inert carriers, and a method for combating undesired plant growth which comprises applying such a composition to a locus containing or likely to contain such undesired plant growth.
The compounds of the formula 1 are described in
DE-OS 2,604,224, those of the formula 2 are described in DE-OS 2,311,638, DE-OS 2,632,581 and
DE-OS 2,850,902, and those of the formula 3 are described in DE-OS 2,732,531.
Preferred compounds A of the formula I are those in which Hal is chlorine and X is sulfur. Preferred compounds B of the formula 2 are those in which R4 is chlorine.
In the mixtures according to the present invention, the compounds A and B, and A and C, exhibit a synergistic effect upon each other, which makes these mixtures more effective than the individual compounds A, B and C, as herbicides.
The mixtures according to the present invention are effective against a large number of weeds without doing any harm to many crop plants, ratios of 1 part of Ato 0.1 to 10 parts of B orC being especially effective in this respect. Mixtures of A and B preferably contain those compounds in a ratio of from 1:1 to 1:4, more preferably from 1:1 to 1 :2, whereas mixtures of A and C preferably contain those compounds in a ratio of from 1:0.1 to 1:0.4, more preferably from 1:0.1 to 1 :0.2.
The mixtures and compositions according to the present invention can be used successfully to combat numerous weeds in crop plants, especially in rice, for example the following weeds: annual types perennial types
Echinochloa spp. Eleocharis acicularis
Fimbristylis llttoralis Eleocharis kuroguwai Cyperus difformis Scirpus maritimus
Cyperus iria Cyperus sero tin us Cyperus spp. Allsma canaliculatum
Monochoria vaginalis Sagiffaria trifolia
Rotala indica Sagittaria pygmaea
Dopatrium junceum
Lindernia pyridaria
Elatine triandra
Ludwigia spp.
The compositions according to the present invention can be used in the form of tank mixtures, in which the individual active substances are mixed directly prior to application, or can be in the form of compositions ready for use. Such compositions ready for use are, for example wettable powders, emulsifiable concentrates, dusts and granules, which contain the usual formulation auxiliaries, for example wetting agents, adhesives, dispersing agents, solid or liquid inert materials, grinding auxiliaries and solvents.
Wettable powders are formulations which are uniformly dispersible in water and which, in addition to the active compounds and diluents or inert materials, contain also wetting agents, for example, polyoxyethylated alkylphenols, polyoxyethylated oleylamines or stearylamines, alkyl sulfonates or alkyl phenylsulfonates, and dispersing agents, for example sodium ligninsulfonate, sodium 2, 2' dinaphthylmethane - 6, 6' - disulfonate, sodium dibutylnaphthalene sulfonate or the sodium salt of oleyl - methyltaurine.
Emulsifiable concentrates are obtained by dissolving the active compounds in an organic solvent, for example, butanol, cyclohexanone, dimethylformamide, xylene, isophorone or an even higherboiling aromatic compound, and by adding a nonionic wetting agent, for example a polyoxethylated alkylphenol or a polyoxethylated oleyl or stearyl amine.
Dusting agents are obtained by grinding the active compounds with a finely divided solid, for example talc, a natural clay, such as kaolin, bentonite, pyrophillite or diatomaceous earth.
Granules can be manufactured either by spraying the active compounds onto an absorbent, granular,
inert material or by applying a concentrate of the active compounds by means of an adhesive, for example polyvinyl alcohol, sodium polyacrylate or even a mineral oil, onto the surface of a carrier, such as sand, a kaolinite or a granular inert material. Suitable formulations can also be manufactured by the customary methods of manufacture of fertilizer granules, if desired in admixture with fertilizers.
In the herbicidal compositions of the present invention, the concentrations of the active compounds in the commercial formulations can vary within wide limits. In wettable powders, the total concentration of active compounds (A+B or C) may be for example, from about 10 to 80%, the remainder consisting of one or more of the formulation additives. In the case of emulsifiable concentrates, the active compound concentration may be from about 10% to 70%. Dust formulations may contain from 5 to 20% of active compounds, and sprayable solutions from about 2 to 20%. In the case of granules, the active compound content in part depends on whether the active compounds are in a liquid or solid form and what granulating auxiliaries, fillers and the like are used.
If necessary or desired, the commercial concentrates may be diluted prior to application in the usual manner, for example by means of water in the case of wettable powders and emulsifiable concentrates.
Dusts, granules and sprayable solutions are generally ready for use without further dilution. The amount of active ingredient necessary for obtaining the desired result naturally depends on external conditions such as temperature and humidity, but is generally from 0.05 to 10.0 kglha or more of active substance, preferably from 0.1 to 3kg/ha.
The following Example illustrates the invention.
EXAMPLE
Application to planted rice (postemergence process)
The herbicidal effect of the mixtures according to the present invention was tested under tropical conditions in the open field. The mixtures were applied in granular form in test plots having a size of 4 m2. At the time of application (6 days after planting the rice) the weeds had partly emerged, Echinochloa, for example, having developed 1 to 2 leaves. During the test, the water level in the plot was maintained constant at 1 to 3 cm so that the surface of the soil could not dry out.
27 days after planting and 21 days after application of the mixtures, the herbicidal effect was determined in the treated plots by counting the weeds and comparing their number with the number of weeds in untreated plots. Any damageto the rice plants was evaluated visually.
The results listed in the following Table show that the mixtures according to the present invention exhibit an unexpectedly good herbicidal effect against numerous weeds without damaging the rice.
The effect achieved is far above the effect to be expected in view of the activity of the individual compounds and, therefore, a synergistic effect is obtained.
The synergistic effect was determined according to the formula of S.R. Colby in "Calculating synergistic and antagonistic responses of herbicide combinations" (Weeds 15, pages 20to 22 (1967)), as follows:
X.Y E=X +Y- 100 in which
X denotes the damage caused by herbicide A applied in a concentration of x kg per hectare,
Y denotes the damage caused by herbicide B applied in a concentration of y kg per hectare, and
E is the damage to be expected bythe mixture of herbicides A and B applied in concentrations of x and y kg per hectare, respectively.
If the actual damage observed is greater than the calculated damage, the effect of the mixture is more than additive, and is said to be synergistic. This synergistic effect is demonstrated by the following examples in which the effect calculated according to the above formula is indicated in brackets besides the effect achieved.
The following compounds were tested
(DE-OS 2,604,224) (Type A)
(2) c1-o-- NO2 C1 O- sCHCO-NHC2H5o-cH-co-NHc H 25 (Type B) (DE-OS 2,632,sal)
(DE-OS 2,732,5313 (Type C)
Further compounds of the formulae 1,2 and 3 were tested and an analogous, favourable synergism was observed.
The results prove the synergistic effect of the mixtures according to the present invention in the control of weeds.
Table
Herbicidal effect and selectivity in a test in a rice field (damage in %)
dosage Echinochloa (a) compound IkgASlhaJ crus-galli Cyperus spp. dicotyledoneae Monochoria rice
(1) 0.4 81 64 30 17 0
0.5 94 74 43 26 0
(2) 0.5 0 68 44 38 0
1.0 10 78 64 52 0
(3) 0.04 0 45 56 28 0
0.06 20 65 62 44 0 (1)+(2) 0.4 + 0.5 98 (81) iso (89) 100(61) 92 (49) 0
0.5 + 1.0 iso (95) 100 (95) 100 (80) 95 (65) 0
(1) + (3) 0.4 + 0.04 90 (81) 98 (81) 96 (69) 96 (40) 0
0.5 + 0.06 100 (95) 100 (91) 100 (78) 99 (59) 0 AS = active substance (a) Cyperus sp.: mainly Cyperus difformis, but also some Fimbristylis and Scirpus Supinus (b) Dicotyledoneae of the types Ludwigia, Sphenoclea and Elatine
Claims (9)
1. A herbicidal mixture containing (A) a compound of the formula
in which the or each Hal is a halogen atom, each of R1, R2 and R3 is a C1-C3alkyl group, X is oxygen or sulfur, and n is 1 or2; together with either (B) a compound of the formula
in which the or each R4 is a halogen atom or a trifluoromethyl group, Rs is hydrogen or a C1-C4alkyl group, R6 is C1-C4alkyl, C3-C6alkenyl, C3-C6alkynyl, hydroxy, C1-C3alkoxy or C1-C3alkylthio-C1-C3alkyl group, and
n1 is 1 or 2; (C) a compound of the formula
in which R7 is a C1-C4alkyl group.
2. A mixture as claimed in claim 1, wherein the weight ratio of component Ato component B or component C is from 1: 0.1 to :10.
3. A mixture as claimed in claim 1 or claim 2, wherein the weight ratio of component Ato compo nent B isfrom 1: 1 to 1 :4.
4. A mixture as claimed in claim 1 or claim 2, wherein the weight ratio of component A to component C is from 1: 0.1 to 1: 0.4.
5. A herbicidal mixture as claimed in claim 1, substantially as hereinbefore described.
6. A herbicidal composition comprising a mixture as claimed in any one of claims 1 to 5 together with an inert carrier.
7. A method for combating undesired plant growth which comprises applying to a locus containing or likely to contain such undesired plant growth a composition as claimed in claim 5.
8. A method according to claim 7, wherein the locus contains a crop plant.
9. A method according to claim 8, wherein the crop plant is rice.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792926668 DE2926668A1 (en) | 1979-07-02 | 1979-07-02 | HERBICIDAL AGENTS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2053683A true GB2053683A (en) | 1981-02-11 |
Family
ID=6074708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8021372A Withdrawn GB2053683A (en) | 1979-07-02 | 1980-06-30 | Herbicidal mixtures and compositions |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5610106A (en) |
| AU (1) | AU6000380A (en) |
| BR (1) | BR8004099A (en) |
| DE (1) | DE2926668A1 (en) |
| GB (1) | GB2053683A (en) |
| IT (1) | IT1131552B (en) |
-
1979
- 1979-07-02 DE DE19792926668 patent/DE2926668A1/en not_active Withdrawn
-
1980
- 1980-06-30 IT IT23145/80A patent/IT1131552B/en active
- 1980-06-30 GB GB8021372A patent/GB2053683A/en not_active Withdrawn
- 1980-07-01 JP JP8857480A patent/JPS5610106A/en active Pending
- 1980-07-01 AU AU60003/80A patent/AU6000380A/en not_active Abandoned
- 1980-07-30 BR BR8004099A patent/BR8004099A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU6000380A (en) | 1981-01-15 |
| IT8023145A0 (en) | 1980-06-30 |
| JPS5610106A (en) | 1981-02-02 |
| IT1131552B (en) | 1986-06-25 |
| DE2926668A1 (en) | 1981-01-22 |
| BR8004099A (en) | 1981-01-21 |
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