Herbicidal compositions containing a tetrazole compound and methods of combating plant growth

A herbicidal composition comprises a tetrazole compound of the general formula I:- where R represents a phenyl group which is unsubstituted or substituted by a halogen atom, or by a amino group, or by an alkyl, alkoxy or haloalky group having up to 4 carbon atoms, or R represents a phenyl group optionally substituted by a halogen atom, or by a nitro group, or by an alkyl or haloalkyl group having up to 4 carbon atoms, (hereinafter referred to as compound A), together with at least one compound selected from (i) 2-chloro-4-(1-cyano-1-methylethylamino-)-6-ethylamino 1,3,5-triazine. (ii) 1-(benzothiazol-2-yl)-1,3-dimethyl urea (iii) a compound which has the general formula II wherein R3 represents a chlorine atom or a methyl, isopropyl or methoxy group, R4 represents a hydrogen or chlorine atom and R5 represents a methyl or methoxy group (iv) 2,6-dinitro-N,N-dipropyl-4-(trifluoromethyl)benzenamine (v) methyl- or isopropyl-N-benzoyl-N-(3-chloro-4-fluorophenyl)-alaninate. (vi) Compound of the general formula I:- where R6 represents a chlorine atom or a methoxycarbonyl group.