Herbicidal active substance combinations

Details Herbicidal active substance combinations Herbicidal active substance combinations

1992-03-25

1995-09-05

Raymond, Richard L.

Plant protecting and regulating compositions

Plant growth regulating compositions

Plural active ingredients

504270, 504348, 504350, A01N 4338, A01N 4376, A01N 3108, A01N 3506

Patent

active

054479037

DESCRIPTION:

BRIEF SUMMARY
The invention is in the area of the plant protection agents which can be used against monocotyledon and dicotyledon weeds.
EP-A 0,137,963, EP-A 0,186,118, EP-A 0,274,634, EP-A 0,298,680 and U.S. Pat. No. 4,780,127 disclose 2-benzoylcyclohexanedione derivatives with which a broad range of monocotyledon and dicotyledon weeds can be controlled. They can be employed as soil-acting herbicide and also via the shoot or leaf and show, in particular, also a high selectivity in monocotyledon crop plants such as cereals, maize and rice.
There exist, however, various economically highly important monocotyledon weeds in cereals and also in maize and rice, such as, for example, Alopecurus myosuroides, Avena fatua, Echinochloa crus galli or Setaria viridis, which cannot be controlled in an ideal manner if only the abovementioned compounds are used.
Surprisingly, some herbicidal active substances have now been found in biological trials which, when used together with the abovementioned compounds, have pronounced synergistic actions as regards the effectiveness against weeds.
The present invention therefore relates to herbicidal agents which contain an effective amount of one or more compounds of the formula (I) or of salts thereof (type A compounds) ##STR2## where R.sup.1 is halogen, (C.sub.1 -C.sub.4)alkoxy, (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)haloalkyl, --NO.sub.2, --CN or S(O).sub.n R.sup.10 ; (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkoxy, (C.sub.1 -C.sub.4)haloalkoxy, (C.sub.1 -C.sub.4)haloalkyl, --CN, --NO.sub.2, --S(O).sub.m --R.sup.11, --NR.sup.12 R.sup.13, --NR.sup.14 --CO--R.sup.15 ; are hydrogen, (C.sub.1 -C.sub.4) alkyl or --CO--R.sup.16 ; -C.sub.4)alkyl; (C.sub.1 -C.sub.4)alkoxy; benzyl or --NR.sup.17 R.sup.18 ; -C.sub.4)alkyl; or (C.sub.1 -C.sub.4)alkoxy; -C.sub.4)alkyl and or more of the following compounds II-XX (type B compounds): ##STR3## 3,7-Dichloroquinoline-8-carboxylic acid (IV) and salts thereof, ##STR4## N-(ethylthiocarbonyl)azepane (V), ##STR5## S-4-chlorobenzyl N,N-diethylthiocarbamate (VI), ##STR6## N-(butoxymethyl)-2-chloro-N-(2,6-diethylphenyl)acetamide (VII), ##STR7## N-(2-propoxyethyl)-2-chloro-N-(2,6-diethylphenyl)acetamide (VIII), ##STR8## 3,5-Bis(methylthiocarbonyl)-2-difluoromethyl-4-(2-methylpropyl)-6-trifluor o methylpyridine (IX), ##STR9## 2-(1,3-benzothiazol-2-yloxy)-N-methylacetanilide (X), ##STR10## S-benzyl N-ethyl-(1,2-dimethylpropyl)thiocarbamate (XI), ##STR11## N-(2-phenylprop-2-ylthiocarbonyl)piperidine (XII), ##STR12## HW-52, i.e. 4-ethoxymethoxy-N-(2,3-dichlorophenyl)benzamide (XIII), ##STR13## cinmethylin, chemical name exo-1-methyl-4-(1-methylethyl)-2-(2-methylphenylmethoxy)-7-oxabicyclo-[2.2 .1]-heptane (XIV), ##STR14## anilofos, S-[2-[(4-chlorophenyl)(1-methylethyl)amino]-2-oxoethyl]O,O-dimethyl phosphorodithioate (XV) ##STR15## benfuresate, 2,3-dihydro-3,3-dimethyl-5-benzofuranylethanesulfonate (XVI) ##STR16## KNW-242, triazofenamide, 1-(3-methylphenyl)-5-phenyl-1H-1,2,4-triazol-3-carboxamide (XVII) ##STR17## benzofenap, 2-[4-(2,4-dichloro-m-toluoyl)-1,3-dimethylpyrazol-5-yloxy]-4-methylacetoph enone (XVIII) ##STR18## pyrazoxyfen, 2-[4-(2,4-dichlorobenzoyl)-1,3-dimethylpyrazol-5-yloxy]-acetophenone (XIX) ##STR19## TFH-450, 3-(2,6-diethylphenylsulfonyl)-1-(N-ethyl-N-methylaminocarbonyl)-1,2,4-tria zole (XX) ##STR20## The compounds of the formula (I) are disclosed in the publications mentioned at the outset. Compound (IV) is known from British Crop Protection Conference-Weeds, 1985, p. 77-83, as BAS 514 H (quinchlorac). Compounds (II) and (III), (V)-(VIII), (XV) and (XVI) are all described in "The Pesticide Manual", British Crop Protection Council, 8th Ed., 1987; see (III) ("fenoxaprop-ethyl") p. 379; (V) ("molinate") p. 578; (VI) ("thiobencarb") p. 796; (VII) ("butachlor") p. 106; (VIII) ("pretilachlor") p.689; (X) ("mefenacet") p. 526; (XV) ("anilofos") p. 30; (XVI) ("benfuresate") p. 857. Compound (IX) is known as "MON 7200" and described in "Proceedings of the 11th Asian-Pacific Weed Science Society Conference 1987, page 455-460". Compounds (XI) and (XII) ar

REFERENCES:
patent: 4130413 (1978-12-01), Handte et al.
patent: 4531969 (1985-07-01), Nestler et al.
patent: 4780127 (1988-10-01), Michaely et al.
patent: 4954529 (1990-09-01), Koch et al.
Gray's Manual of Botany, p. Ixi, Ixii (1970).
Chemical Abstracts, vol. 111, No. 25, Dec. 18, 1989, pp. 260-261, American Chemical Society.
Chemical Abstracts, vol. 107, No. 13, Sep. 28, 1987; pp. 221-222, American Chemical Society.

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