Patent ID: 6017852
Filing Date: 2000-01-25
Classification: A01N,C07D

Abstract:
A method of controlling harmful plants in rice crops, which comprises applying one or more compounds of the formula (I) or salts thereof ##STR4## where R.sup.1 is an acyl radical from the group CO--R.sup.2, CS--R.sup.2, CO--OR.sup.3, CS--OR.sup.3, CO--SR.sup.4, CS--SR.sup.4, CO--NR.sup.5 R.sup.6 and CS--NR.sup.5 R.sup.6,R.sup.2 is H, (C.sub.1 -C.sub.6)alkyl, (C.sub.3 -C.sub.6)cycloalkyl, (C.sub.3 -C.sub.6)cycloalkyl-(C.sub.1 -C.sub.4)alkyl, (C.sub.2 -C.sub.6)alkenyl or (C.sub.2 -C.sub.6)alkynyl, where each of the 5 last-mentioned radicals is unsubstituted or substituted by one or more radicals from the group halogen, (C.sub.1 -C.sub.4)alkoxy, (C.sub.1 -C.sub.4)haloalkoxy, (C.sub.1 -C.sub.4)alkylthio, (C.sub.1 -C.sub.4)haloalkylthio, CN, NH.sub.2, mono- and di((C.sub.1 -C.sub.4)alkylamino and, in the case of cyclic radicals, also (C.sub.1 -C.sub.4)alkyl and (C.sub.1 -C.sub.4)haloalkyl,R.sup.3 is a radical from the group of the radicals which are possible R.sup.2, except for H,R.sup.4 is a radical from the group of the radicals which are possible for R.sup.3,R.sup.5,R.sup.6 independently of one another are each a radical from the group of the radicals which are possible for R.sup.2, or the groupNR.sup.5 R.sup.6 together is a substituted or unsubstituted 4-, 5-or 6-membered saturated or unsaturated heterocyclic radical which is bonded at the nitrogen atom, which, in addition to the nitrogen atom, contains no further hetero ring atom or further hetero ring atoms and which is unsubstituted or substituted by one or more radicals from the group (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)haloalkyl, halogen, (C.sub.1 -C.sub.4)alkoxy and (C.sub.1 -C.sub.4)haloalkoxy,X,Y independently of one another are halogen, (C.sub.1 -C.sub.6)alkyl, (C.sub.1 -C.sub.6)alkoxy, (C.sub.1 -C.sub.6)alkylthio, where each of the three last-mentioned radicals is unsubstituted or substituted by one or more radicals from the group halogen, (C.sub.1 -C.sub.4)alkoxy and (C.sub.1 -C.sub.4)alkylthio, or is (C.sub.3 -C.sub.6)cycloalkyl, (C.sub.3 -C.sub.6)alkenyl, (C.sub.3 -C.sub.6)alkynyl, (C.sub.3 -C.sub.6)alkenyloxy or (C.sub.3 -C.sub.6)alkynyloxy andz is CH or N,to the area under cultivation, which contains the harmful plants and rice plants or their seeds, in an effective amount of from 0.0001 to 0.5 kg of a.i./ha.