Abstract: Phenoxy malonic acids and derivatives thereof represented by the general formula (I): ##STR1## wherein X is a 4-trifluoromethylphenoxy group or a 3,5-dichloropyridyl-2-oxy group; and R is a hydroxy group, an --O-- cation group or a (C.sub.1 - C.sub.4)alkoxy group, useful as a herbicide; a herbicidal composition containing the compound; and methods of controlling weeds using such materials.

Abstract: Phenoxy valeric acids and derivatives thereof represented by the general formula (I): ##STR1## wherein X is a hydrogen atom or a chlorine atom; and R is a hydroxy group, an --O-cation group, a (C.sub.1 - C.sub.4)alkoxy group, a (C.sub.1 - C.sub.4)alkylthio group, a benzyloxy group, or an amino group which may be substituted with a (C.sub.1 - C.sub.4)alkyl group(s), a phenyl group or a pyridine-2-yl group, useful as a herbicide; a herbicidal composition containing the compound; and methods of controlling weeds using such materials.

Abstract: .alpha.-[4-(5-Mono-substituted or 3,5-di-substituted-pyridyl-2-oxy)phenoxy]alkanecarboxylic acids and derivatives thereof useful as a herbicide; a herbicidal composition containing the compound; methods of controlling weeds using such materials and production of such materials.

Abstract: Phenoxypropane compounds represented by the general formula (I): ##STR1## wherein X is a 4-halophenoxy group, a 2,4-dihalophenoxy group, a 4-trifluoromethylphenoxy group, a 2-halo-4-trifluoromethylphenoxy group, a 5-halopyridyl-2-oxy group or a 3,5-dihalopyridyl-2-oxy group; and Y is a halogen atom, a hydroxy group, a (C.sub.1 -C.sub.4)alkoxy group in which the alkyl moiety thereof may be substituted with a hydroxy group(s), a (C.sub.1 -C.sub.4)alkylcarbonyloxy group or a phenylcarbonyloxy group in which the phenyl moiety thereof may be substituted with a halogen atom(s), useful as a herbicide; a herbicidal composition containing the compound; and methods of controlling weeds using such materials.

Abstract: .alpha.-[4-(5-Mono-substituted or 3,5-di-substituted-pyridyl-2-oxy)phenoxy]alkanecarboxylic acids and derivatives thereof useful as a herbicide; a herbicidal composition containing the compound; methods of controlling weeds using such materials and production of such materials.

Abstract: .alpha.-[4-(5-Mono-substituted or 3,5-di-substituted-pyridyl-2-oxy)phenoxy]alkanecarboxylic acids and derivatives thereof useful as a herbicide; a herbicidal composition containing the compound; methods of controlling weeds using such materials and production of such materials.

Abstract: A herbicide which comprises a compound as an active ingredient having the formula ##STR1## wherein X represents --H or --Cl; Y represents halogen atom or cyano group; Z.sub.1 represents --H or methyl group; Z.sub.2 represents --H, methyl or ethyl group; Z.sub.3 represents cyano group or ##STR2## group; R represents hydroxy group, --O-- cation group, C.sub.1 - C.sub.4 alkylthio group, C.sub.2 - C.sub.4 alkenylthio group, C.sub.2 - C.sub.4 alkynylthio group, C.sub.1 - C.sub.4 alkoxy group, C.sub.1 - C.sub.4 alkoxy- C.sub.1 - C.sub.4 alkoxy group, C.sub.2 - C.sub.4 alkenyloxy group, C.sub.2 - C.sub.4 alkynyloxy group, amino group, C.sub.1 - C.sub.4 alkylamino group, di-C.sub.1 - C.sub.4 alkylamino group or anilino group which can be substituted with halogen atom or C.sub.1 - C.sub.4 alkyl group.

Abstract: .alpha.-[4-(5-Mono-substituted or 3,5-di-substituted-pyridyl-2-oxy)phenoxy]alkanecarboxylic acids and derivatives thereof useful as a herbicide; a herbicidal composition containing the compound; methods of controlling weeds using such materials and production of such materials.

Abstract: The inhibition of the growth of tobacco plant suckers by the application to the tobacco plant of benzylthiolcarbamate having the formula, ##STR1## wherein R.sub.1 and R.sub.2 are selected from the group consisting of acetyl, cyclohexyl, and C.sub.1.sub.-6 alkyl group;X and Y are selected from the group consisting of nitro, acetyl, amino,C.sub.1.sub.-3 alkylC.sub.1.sub.-3 alkoxyl, and halogen; andm and n are 0 or 1.

Abstract: Tobacco suckers can very effectively be controlled by applying a composition comprising as the active ingredient at least one phosphorothionoamidate represented by the formula: ##SPC1##Wherein R.sup.1 and R.sup.2 are independently alkyl groups having 1 to 4 carbon atoms; X is hydrogen, a halogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms; and n is an integer of 1 to 3, around portions of tobacco at which suckers are to be developed or have slightly been developed.

Abstract: A diphenyl ether compound, such as 2,4'-dichloro-4-trifluoromethyl-3'-carbomethoxydiphenyl ether, which has herbicidal properties and is effective for controlling weeds using soil and/or foliage application and herbicidal compositions containing the same.