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Abstract

A selectively herbicidal composition for controlling grasses and weeds in crops of useful plants, comprising a) a herbicidally effective amount of a compound of formula I 1 wherein R.sub.1 and R.sub.3 are, each independently of the other, ethyl, haloethyl, ethynyl, C.sub.1- or C.sub.2-alkoxy, C.sub.1- or C.sub.2-haloalkoxy, C.sub.1- or C.sub.2-alkylcarbonyl or C.sub.1- or C.sub.2-hydroxyalkyl; R.sub.4 and R.sub.5 together are a group Z.sub.2 --CR.sub.14(R.sub.15)--CR-.sub.16(R.sub.17)--O--CR.sub.18(R.sub.19)--CR.sub.20(R.sub.21)--(Z.sub.2); R.sub.14, R.sub.15, R.sub.16, R.sub.17, R.sub.18, R.sub.19, R.sub.20 and R.sub.21 are, each independently of the others, hydrogen, halogen, C.sub.1-C.sub.4alkyl or C.sub.1-C.sub.4haloalkyl, wherein an alkylene ring may be fused or spiro-bound to the carbon atoms of the group Z.sub.2, which alkylene ring, together with the carbon atoms of the group Z.sub.2, to which it is bonded, contains from 2 to 6 carbon atoms and may be interrupted by oxygen, or the alkylene ring bridges at least one ring atom of the group Z.sub.2; G is hydrogen, --C(X.sub.1)--R.sub.30, --C(X.sub.2)--X.sub.3--R.sub.31, --C(X.sub.4)--NR.sub.32(R.sub.33), --S(O).sub.2--R.sub.34, --P(X.sub.5)R.sub.35R.sub.36, --CH.sub.2--X.sub.6--R.sub.37 or an alkali metal, alkaline earth metal, sulfonium or ammonium cation; X.sub.1, X.sub.2, X.sub.3, X.sub.4, X.sub.5 and X.sub.6 are, each independently of the others, oxygen or sulfur; R.sub.30, R.sub.31, R.sub.32, R.sub.33, R.sub.34, R.sub.35, R.sub.36 and R.sub.37 are, each independently of the others, hydrogen, C.sub.1-C.sub.10alkyl, C.sub.1-C.sub.10haloalkyl, C.sub.1-C.sub.10cyanoal-kyl, C.sub.1-C.sub.10nitroalkyl, C.sub.1-C.sub.10aminoalkyl, C.sub.2-C.sub.5-alkenyl, C.sub.2-C.sub.5haloalkenyl, C.sub.3-C.sub.8cycloalkyl, C.sub.1-C.sub.5alkylamino-C.sub.1-C.sub.5alkyl-, di(C.sub.1-C.sub.5alkyl)amino-C.sub.1-C.sub.5alkyl, C.sub.3-C.sub.7Cycloalkyl-C.sub.1-C.sub.5alkyl, C.sub.1-C.sub.5alkoxy-C.s-ub.1-C.sub.5alkyl, C.sub.3-C.sub.5alkenyloxy-C.sub.1-C.sub.5alkyl, C.sub.3-C.sub.5alkynyloxy-C.sub.1-C.sub.5alkyl, C.sub.1-C.sub.5alkylthio--C.sub.1-C.sub.5alkyl, C.sub.1-C.sub.5alkylsulfoxy-C.sub.1-C.sub.5alkyl, C.sub.1-C.sub.5-alkylsulfonyl-C.sub.1-C.sub.5alkyl, C.sub.2-C.sub.8alkylideneaminooxy-C.sub.1-C.sub.5alkyl, C.sub.1-C.sub.5alkylcarbonyl-C.sub.1-C.sub.5alkyl, C.sub.1-C.sub.5alkoxycarbonyl-C.sub.1-C.sub.5alkyl, C.sub.1-C.sub.5alkylaminocarbonyl-C.sub.1-C.sub.5alkyl, di(C.sub.1-C.sub.5alkyl)-aminocarbonyl-C.sub.1-C.sub.5alkyl, C.sub.1-C.sub.5alkylcarbonylamino-C.sub.1-C.sub.5alkyl, C.sub.1-C.sub.5alkylcarbonyl-(C.sub.1-C.sub.5-alkyl)-amino-C.sub.1-C.sub.-5alkyl, tri(C.sub.1- or C.sub.2-alkyl)silyl-C.sub.1-C.sub.5alkyl, phenyl, heteroaryl, phenyl-C.sub.1-C.sub.5alkyl, heteroaryl-C.sub.1-C.sub.5alkyl, phenoxy-C.sub.1-C.sub.5alkyl or heteroaryloxy-C.sub.1-C.sub.5alkyl, wherein the afore-mentioned aromatic rings may be substituted by halogen, nitro, cyano, amino, di-(C.sub.1-C.sub.4alkyl)amino, hydroxy, methoxy, ethoxy, methylthio, ethylthio, formyl, acetyl, propionyl, carboxyl, C.sub.1-C.sub.5alkoxycarbonyl or by C.sub.1- or C.sub.2-haloalkyl; R.sub.34, R.sub.35 and R.sub.36 are, in addition, C.sub.1-C.sub.10alkoxy, C.sub.1-C.sub.10haloalkoxy, C.sub.1-C.sub.5alkylamino, di(C.sub.1-C.sub.5-alkyl)amino, benzyloxy or phenoxy, wherein the aromatic rings of the last two substituents may be substituted by halogen, nitro, cyano, amino, dimethylamino, hydroxy, methoxy, ethoxy, methylthio, ethylthio, formyl, acetyl, propionyl, carboxyl, C.sub.1-C.sub.5alkoxycarbonyl or by C.sub.1- or C.sub.2-haloalkyl; and R.sub.37 is, in addition, C.sub.1-C.sub.10alkylcarbonyl, or a salt or diastereoisomer of a compound of formula I, and b) an amount, which is effective for antagonism of the herbicide, of a compound of formula IIa 2 or of formula IIb 3 or of formula IIc 4 or of formula IId 5 or of formula IIe 6 wherein the substituents R.sub.22, R.sub.23, R.sub.24, R.sub.25, R.sub.26, R.sub.27, n, m, R.sub.28, R.sub.29, R.sub.30, R.sub.31, R.sub.32, o, p, G.sub.2, R.sub.33, R.sub.34, R.sub.35, R.sub.36, R.sub.37 and are as defined in claim 1.

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First Claim