Abstract: This invention covers thiophenesulfonylureas of Formula I, agriculturally suitable compositions containing them, and their method-of-use as general and/or selective preemergent and/or postemergent herbicides or plant growth regulants.

Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides in which the aryl radical is substituted in the 2-position by a carboxy radical, ester, thioester, or amide thereof; e.g. N-[(4,6-dimethylpyrimidin-2-yl)aminocarbonyl]-2-methoxycarbonylbenzenesulf onamide or N-[(4,6-dimethoxy-1,3,5-triazin-2-yl)aminocarbonyl]-2-methoxycarbonylbenze nesulfonamide; are useful for the regulation of plant growth and as pre-emergence and post-emergence herbicides.

Abstract: Novel N-(heterocyclicaminocarbonyl)carbonyl-substituted benzothiophene- and benzofuransulfonamides are useful as herbicides. The invention also includes novel sulfonamides and sulfonyl isocyanates useful in preparing such compounds.

Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides in which the aryl radical is substituted in the 2-position by a carboxy radical, ester, thioester, or amide thereof; e.g. N-[(4,6-dimethylpyrimidin-2-yl)aminocarbonyl]-2-methoxycarbonylbenzenesulf onamide or N-[(4,6-dimethoxy-1,3,5-triazin-2-yl)aminocarbonyl]-2-methoxycarbonylbenze nesulfonamide; are useful for the regulation of plant growth and as pre-emergence and post-emergence herbicides.

Abstract: An improved process for preparing arylsulfonyl isocyanates by phosgenation of arylsulfonamides in the presence of a catalytic quantity of a hydrocarbyl isocyanate and a catalytic quantity of a tertiary amine base. The sulfonyl isocyanates are useful intermediates.

Abstract: The application of certain sulfonylurea compounds to stands of conifer plants such as loblolly pine controls undesired vegetation without adverse effects on the conifers. These compounds have the formula: ##STR1## wherein R is Cl or CO.sub.2 R.sub.2 where R.sub.2 is C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.4 alkenyl, CH.sub.2 CH.sub.2 OCH.sub.3 or CH.sub.2 CH.sub.2 Cl;R.sub.1 is H or CH.sub.3 ;X is CH.sub.3, OCH.sub.3, OC.sub.2 H.sub.5 or CH.sub.2 OCH.sub.3 ;Y is CH.sub.3 or OCH.sub.3 ; andZ is CH or N; oran agriculturally acceptable salt thereof.

Abstract: N-(heterocyclicaminocarbonyl)-o-(aryl or alkaryl)benzenesulfonamides, such as N-[(4,6-dimethoxy-1,3,5-triazin-2-yl)aminocarbonyl]-[1,1'-biphenyl]-2-sulf onamide are useful as preemergent or postemergent herbicides or as plant growth regulants.

Abstract: N-(Pyridinylaminocarbonyl)benzenesulfonamides are useful for the regulation of plant growth and as pre-emergence and post-emergence herbicides.

Abstract: N-(heterocyclicaminocarbonyl) arylsulfonamides in which at least one of the acyclic nitrogens thereof is substituted by lower alkyl, are useful for the regulation of plant growth and as general and selective herbicides.

Abstract: This invention relates to novel urea and isourea compounds, agricultural compositions containing them and to their method of use as pre- and post-emergence herbicides and to plant growth regulants.

Abstract: Condensed ring aromatic ureas and isoureas are useful as plant growth regulants and as pre- and/or post-emergence herbicides.

Abstract: N-[Heterocyclicaminocarbonyl]-8-quinolinesulfonamides such as N-[(4,6-dimethoxy-1,3,5-triazin-2-yl)amino-carbonyl]-8-quinolinesulfonamid e or N-[(4,6-dimethoxy-pyrimidin-2-yl)aminocarbonyl]-8-quinolinesulfonamide are useful for plant growth retardation, brush control and weed control in crops.

Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides, such as 3-isocyanato-N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)aminocarbonyl]benze nesulfonamide or methyl [3-[[(4- methoxy-6-methylpyrimidin-2-yl)aminocarbonyl]aminosulfonyl]phenyl]carbamat e, are useful for the regulation of plant growth and as herbicides.

Abstract: Pyrrole sulfonamides are useful as agricultural chemicals.

Abstract: The application of certain sulfonylurea compounds to sugarcane and sorghum increases their sugar content. These compounds have the formula: ##STR1## wherein R is C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.4 alkenyl, CH.sub.2 CH.sub.2 OCH.sub.3 or CH.sub.2 CH.sub.2 Cl;R.sub.1 is H or CH.sub.3 ;X is CH.sub.3, OCH.sub.3, OC.sub.2 H.sub.5 or CH.sub.2 OCH.sub.3 ;Y is CH.sub.3 or OCH.sub.3 ; andZ is CH or N; oran agriculturally acceptable salt thereof.

Abstract: Novel 2-[[(heterocyclic)-aminocarbonyl]aminosulfonyl]benzeneacetic acid derivatives, such as 2-[[(4,6-dimethoxypyrimidin-2-yl)-aminocarbonyl]aminosulfonyl]benzeneaceti c acid, methyl ester, are useful as plant growth regulants and herbicides.

Abstract: N-[(5-Substituted pyrimidin-2-yl)aminocarbonyl]-2-haalopyridine-3-sulfonamides are useful as herbicides.

Abstract: N-(heterocyclicaminocarbonyl)aryl and pyridylsulfonamides, useful for the regulation of plant growth and as pre-emergence and post-emergence herbicides.

Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides in which at least one of the acyclic nitrogens thereof is substituted by lower alkyl, or sometimes in the case of aminocarbonyl nitrogen, by methoxy; e.g. N-[N-(4,6-dimethoxy-1,3,5-triazin-2-yl)-N-methylaminocarbonyl]-2-chloroben zenesulfonamide or N-[N-(4,6-dimethoxy-1,3,5-triazin-2-yl)-N-methylaminocarbonyl]-2-nitrobenz enesulfonamide; are useful for the regulation of plant growth and as general and selective herbicides.

Abstract: This invention relates to N(Substituted Phenylsulfonyl) N'(Substituted Pyrimidinyl) urea compounds having the formulae I and IA ##STR1## to agricultural compositions containing them and to their methods of use as general as well as selective pre- and post-emergence herbicides and as plant growth regulants.