Herbicidal mixtures having a synergistic effect

Details Herbicidal mixtures having a synergistic effect Herbicidal mixtures having a synergistic effect

2000-12-12

2003-03-18

Clardy, S. Mark (Department: 1616)

Plant protecting and regulating compositions

Plant growth regulating compositions

Plural active ingredients

C504S132000, C504S134000, C504S136000, C504S137000, C504S139000

Reexamination Certificate

active

06534444

ABSTRACT:

This application has been filed under 35 USC 371 as the national stage of international application PCT/EP99/04055, filed Jun. 12, 1999.
The present invention relates to a synergistic herbicidal mixture comprising
A) at least one 3-heterocyclyl-substituted benzoyl derivative of the formula I
 in which the variables have the following meanings:
R
1
, R
3
are hydrogen, halogen, C
1
-C
6
-alkyl, C
1
-C
6
-haloalkyl, C
1
-C
6
-alkoxy, C
1
-C
6
-haloalkoxy, C
1
-C
6
-alkylthio, C
1
-C
6
-alkylsulfinyl or C
1
-C
6
-alkylsulfonyl;
R
2
is a heterocyclic radical selected from the group: thiazol-2-yl, thiazol-4-yl, thiazol-5-yl, isoxazol-3-yl, isoxazol-4-yl, isoxazol-5-yl, 4,5-dihydroisoxazol-3-yl, 4,5-dihydroisoxazol-4-yl and 4,5-dihydroisoxazol-5-yl, it being possible for the nine radicals mentioned to be unsubstituted or mono- or polysubstituted by halogen, C
1
-C
4
-alkyl, C
1
-C
4
-alkoxy, C
1
-C
4
-haloalkyl, C
1
-C
4
-haloalkoxy or C
1
-C
4
-alkylthio;
R
4
is hydrogen, halogen or C
1
-C
6
-alkyl;
R
5
is C
1
-C
6
-alkyl;
R
6
is hydrogen or C
1
-C
6
-alkyl;
or one of its environmentally compatible salts; and
B) a synergistically effective amount of at least one herbicidal compound from the group of the acetyl-CoA carboxylase inhibitors (ACC), acetolactate synthase inhibitors (ALS), amides, auxin herbicides, auxin transport inhibitors, carotenoid biosynthesis inhibitors, enolpyruvylshikimate 3-phosphate synthase inhibitors (ESPS), glutamine synthetase inhibitors, lipid biosynthesis inhibitors, mitosis inhibitors, protoporphyrinogen IX oxidase inhibitors, photosynthesis inhibitors, synergists, growth substances, cell wall biosynthesis inhibitors and a variety of other herbicides.
The invention furthermore relates to herbicidal compositions comprising a herbicidally active amount of a synergistic herbicidal mixture as defined above and at least one liquid and/or solid carrier and, if desired, at least one surfactant.
Moreover, the invention relates to processes for the preparation of these compositions and to a method of controlling undesirable vegetation.
In crop protection products, it is always desirable to increase the specific activity of an active ingredient and the reliability of action. It is an object of the present invention to increase the activity of known, herbicidally active 3-heterocyclyl-substituted benzoyl derivatives of the formula I.
It is an object of the present invention to increase the selective herbicidal activity of the 3-heterocyclyl substituted benzoyl derivatives of the formula I against undesirable harmful plants.
We have found that this object is achieved by the mixtures defined at the outset. We have furthermore found herbicidal compositions which comprise these mixtures, processes for their preparation, and methods of controlling undesirable vegetation. In the last-mentioned cases, it is irrelevant whether the herbicidally active compounds of the components A) and B) are formulated and applied jointly or separately and in which sequence they are applied in the case of separate application.
The mixtures according to the invention show a synergistic effect; the compatibility of the herbicidally active compounds of components A) and B) for certain crop plants is generally retained.
Suitable components B are, as acetyl-CoA carboxylase inhibitors (ACC), for example, cyclohexenone oxime ethers, phenoxyphenoxypropionic esters or arylaminopropionic acids. The acetolactate synthase inhibitors (ALS) include, inter alia, imidazolinones, pyrimidyl ethers, sulfonamides or sulfonyl ureas. Relevant auxin herbicides are, inter alia, pyridine carboxylic acids, 2,4-D or benazolin. Lipid biosynthesis inhibitors which are used are, inter alia, anilides, chloroacetanilides, thioureas, benfuresate or perfluidone. Suitable mitosis inhibitors are, inter alia, carbamates, dinitroanilines, pyridines, butamifos, chlorthal-dimethyl (DCPA) or maleic hydrazide. Examples of protoporphyrinogen IX oxidase inhibitors are, inter alia, diphenyl ethers, oxadiazoles, cyclic imides or pyrazoles. Suitable photosynthesis inhibitors are, inter alia, propanil, pyridate, pyridafol, benzothiadiazinones, dinitrophenols, dipyridylenes, ureas, phenols, chloridazon, triazine, triazinone, uracils or biscarbamates. The synergists are, inter alia, oxiranes. Examples of suitable growth substances are aryloxyalkanoic acids, benzoic acids or quinolinecarboxylic acids. The group “various other herbicides” is to be understood as meaning, inter alia, the classes of the active ingredients dicloropropionic acids, dihydrobenzofurans, phenylacetic acids and individual herbicides mentioned below whose mechanism of action is not (fully) understood.
Other suitable components B are active compounds selected from the group of the amides, auxin transport inhibitors, carotenoic biosynthesis inhibitors, enolpyruvylshikimate 3-phosphate synthase inhibitors (EPSPS), glutamine synthetase inhibitors and cell wall synthesis inhibitors.
Examples of herbicides which can be used in combination with the 3-heterocyclyl-substituted benzoyl derivatives of formula I according to the present invention are, inter alia:
B1 acetyl-CoA carboxylase inhibitors (ACC), for example
cyclohexenone oxime ethers, such as alloxydim, clethodim, cloproxydim, cycloxydim, sethoxydim, tralkoxydim, butroxydim, clefoxydim or tepraloxydim;
phenoxyphenoxypropionic esters, such as clodinafop-propargyl (and, if appropriate, cloquintocet), cyhalofop-butyl, diclofop-methyl, fenoxaprop-ethyl, fenoxaprop-P-ethyl, fenthiapropethyl, fluazifop-butyl, fluazifop-P-butyl, haloxyfop-ethoxyethyl, haloxyfop-methyl, haloxyfop-P-methyl, isoxapyrifop, propaquizafop, quizalofop-ethyl, quizalofop-P-ethyl or quizalofop-tefuryl; or
arylaminopropionic acids, such as flamprop-methyl or flamprop-isopropyl;
B2 acetolactate synthase inhibitors (ALS), for example
imidazolinones, such as imazapyr, imazanuin, imazamethabenz-methyl (imazame), imazamoc, imazapic, imazethapyr or imazamethapyr;
pyrimidyl ethers, such as pyrithiobac-acid, pyrithiobac-sodium, bispyribac-sodium, KIH-6127 or pyribenzoxym;
sulfonamides, such as florasulam, flumetsulam or metosulam; or
sulfonylureas,.such as amidosulfuron, azimsulfuron, bensulfurons-methyl, chiorimuron-ethyl, chorsulfuron, cinosulfuron, cyclosulfamuron, ethametsulfuron-methyl, ethoxysulfuron, flazasulfuron, halosulfuron-methyl, imazosulfuron, metsulfuron-methyl, nicosulfuron, primisulfuron-methyl, prosulfuron, pyrazosulfuron-ethyl, rimsulfuron, sulfometuron-methyl, thifensulfuron-methyl, triasulfuron, tribenuron-methyl, triflusulfuron-methyl, N-[[[4-methoxy-6-(trifluoromethyl)-1,3,5-triazin-2-yl]amino]carbonyl]-2-(trifluoromethyl)-benzenesulfonamide, sulfosulfuron or idosulfuron;
B3 amidems, for example
allidochlor (CDAA), benzoylprop-ethyl, bromobutide, chlorthiamid, diphenamid, etobenzanid (benzchlomet), fluthiamidec fosamin or monalide;
B4 auxin herbicides, for example
pyridinecarboxylic acids, such as clopyralid or picloram; or
2,4-D or benazolin;
B5 auxin transport inhibitors, for example
naptalame or diflufenzopyr;
B6 carotenoid biosynthesis inhibitors, for example
benzofenap, clomazone (dimethazone), diflufenican, fluorochloridone, fluridone, pyrazolynate, pyrazoxyfen, isoxaflutole, isoxachlortole, mesotrione, sulcotrione (chlormesulone), ketospiradox, flurtamone, norflurazon or amitrol;
B7 enolpyruvylshikimate-3-phosphate synthase inhibitors (ESPS), for example
glyphosate or sulfosate;
B8 glutamine synthetase inhibitors, for example
bilanafos (bialaphos) or glufosinate-ammonium;
B9 lipid biosynthesis inhibitors, for example
anilides, such as anilofos or mefenacet;
chloroacetanilides, such as dimethenamid, S-dimethenamid, acetochlor, alachlor, butachlor, butenachlor, diethatyl-ethyl, dimethachlor, metazachlor, metolachlor, S-metolachlor, pretilachlor, propachlor, prynachlor, terbuchlor, thenylchlor or xylachlor;
thioureas, such as butylate, cycloate, di-allate, dimepiperate, EPTC, esprocarb, molinate, pebulate, prosulfocarb, thiobencarb (benthiocarb), tri-allate or vernolate; or
benfuresate or perfl

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