Abstract: The novel compounds of formula I: wherein R, A, X1, X2, X3, Z and m have the meaning given in claim 1, and the agronomically acceptable salts or N-oxides thereof, and herbicidal compositions containing such compounds as active ingredients.

Abstract: A method of combating undesired plant growth in cereals, in particular winter cereals such as wheat and barley, which comprises treating the locus of the cereals with an effective amount of one or more compounds of formula I: 1

Abstract: The invention relates to novel 3-heterocycl-1-yluracils of formula I: wherein R1 and R2 together with the interjacent nitrogen atom form an optionally substituted, optionally benzo-condensed 5-membered heterocyclic ring and R3 through R5 have the meaning given in claim 1. The invention also relates to a method of the production of these substances and to herbicidal compositions containing such compounds as active ingredients.

Abstract: The invention relates to novel compounds of formula I: wherein R, A, B and X have the meaning given in claim 1; and the agronomically acceptable salts or N-oxides thereof, and to herbicidal compositions containing such compounds as active ingredients.

Abstract: The invention relates to novel compounds of formula I: 1

Abstract: The novel compounds of formula I: ##STR1## wherein R, A, X.sup.1, X.sup.2, X.sup.3, Z and m have the meaning given in claim 1, and the agronomically acceptable salts or N-oxides thereof, and herbicidal compositions containing such compounds as active ingredients.

Abstract: The novel cyanopyridines of the general formula (I) ##STR1## (A, B, R.sup.1, R.sup.2, X, m and n are defined in the specification) show selective herbicidal activity.The new compounds can be prepared according to known methods and can be used as herbicides in agriculture and related fields.

Abstract: Herbicidal 2-(hetero)aryloxy-6-arylpyridines and 2-Aryl-4-(hetero)aryloxypyrimidinesNew herbicidal pyridine and pyrimidine derivatives of general formula (1), ##STR1## wherein Z represents a nitrogen atom or a C--H group; A represents an optionally substituted aryl group or an optionally substituted 5- or 6-membered nitrogen-containing heteroaromatic group; n represents an integer from 0 to 2 and R.sup.1 or each R.sup.1 independently represents a hydrogen atom or an optionally substituted alkyl, alkoxy, alkylthio or dialkylamino group; m represents an integer from 0 to 5 and R.sup.1 or each R.sup.1 independently represents a hydrogen or a halogen atom or an optionally substituted alkyl, haloalkyl, haloalkoxy, alkoxy, alkylthio group or a nitro, cyano or a halosulphonyl group; and X represents an oxygen or sulphur atom.

Abstract: The novel compounds of formula I: ##STR1## wherein A represents an optionally substituted 5- or 6-membered heteroaromatic group or an optionally substituted aryl group or a difluorobenzodioxolyl group;B represents an optionally substituted cyclic hydrocarbon or thienyl, an alkyl, alkenyl or alkynyl group or independently has one of the meanings of A;n represents an integer from 0 to 2;R represents a hydrogen atom, a halogen atom, an optionally substituted alkyl, alkenyl, alkynyl, alkoxy, alkoxyalkyl, dialkoxyalkyl, alkoxyalkoxy, alkylthio, amino, alkylamino, dialkylamino or alkoxyamino group or a formamidino or cyano group;X.sub.1 and X.sub.2 independently represent an oxygen or sulphur atom, and the herbicidal use of these compounds.

Abstract: The novel cyanopyridines of the general formula (I) ##STR1## (A, B, R.sup.1, R.sup.2, X, m and n are defined in the specification) show selective herbicidal activity. The new compounds can be prepared according to known methods and can be used as herbicides in agriculture and related fields.

Abstract: The novel heteroaryloxypyridines of formula I: ##STR1## (A, B, R.sub.1 and R.sub.2 are defined in the specification) show excellent selective herbicidal activity.The new compounds can be prepared according to known methods and can be used as herbicides in agriculture and related fields.

Abstract: The novel 6-thienyl pyridines and 4-thienyl pyrimidines of formula I: ##STR1## (A, R.sub.1 to R.sub.5 and Z are defined in the specification) show selective herbicidal activity.The new compounds can be prepared according to known methods and can be used as herbicides in agriculture and related fields.

Abstract: A compound is disclosed having the formula: ##STR1## The compound is useful as an active ingredient in a herbicidal composition.

Abstract: New herbicidal pyrimidine derivatives of general formula (I), ##STR1## wherein Z represents a nitrogen atom; A represents a substituted aryl group or an optionally substituted pyridyl or pyrazolyl group; n represents an integer from 0 to 2 and R.sup.1 or each R.sup.1 independently represents a hydrogen atom or an optionally substituted alkyl, alkoxy, alkylthio or dialkylamino group; m represents an integer from 0 to 5 and R.sup.2 or each R.sup.2 independently represents a hydrogen or a halogen atom or an optionally substituted alkyl, haloalkyl, haloalkoxy, alkoxy, alkylthio group or a nitro, cyano or a halosulphonyl group; and X represents an oxygen or sulphur atom.

Abstract: The novel 6-thienyl pyridines and 4-thienyl pyrimidines of formula I: ##STR1## (A, R.sub.1 to R.sub.5 and Z are defined in the specification) show selective herbicidal activity.The new compounds can be prepared according to known methods and can be used as herbicides in agriculture and related fields.