Abstract: The pre-emergence or post-emergence treatment for weed control in dicotyledonous crops with N-(4-isopropylphenyl)-N',N' dimethylurea and method for crop treatment.

Abstract: Compounds having herbicidal properties having the formula: ##STR1## in which: R.sub.1 is a phenyl radical of the formula: ##STR2## WHERE A is a hydrogen atom, a halogen atom, a lower alkyl of 1-5 carbons, a halogenated lower alkyl of 1-5 carbons, or an alkoxy radical, an alkylthio radical, an alkylcarbamoyloxy radical, the alkyl portion of all these radicals containing from 1 to 5 carbon atoms;B is a phenyl radical, a phenoxy radical or a phenylthio radical which can contain from 1 to 5 halogen atoms on the nucleus, an alkyl radical containing from 1 to 5 carbon atoms or the trifulormethyl radical;m is an integer from 1 to 5; andn is 0 or 1, m + n being at most equal to 5; orR.sub.1 is an alicyclic radical, the ring containing from 3 to 10 carbon atoms;R.sub.2 is a hydrogen atom, an alkyl radical containing 1 to 5 carbon atoms, an optionally substituted phenyl radical;R.sub.3 and R.sub.4 are optionally substituted alkyl radicals containing from 1 to 5 carbon atoms, optionally substituted phenyl radicals;R.

Abstract: A composition for selective weed control in vineyards and orchards containing as active material at least one of the following compounds: ##STR1##

Abstract: Compositions for controlling weeds growing among cereal crops, cotton and soya containing a mixture of isopropylphenyl dimethylurea and dinitro tert.-butylphenol as active material.