Abstract: 2-Chloro-N-(4,6-dimethoxy-5-pyrimidinyl)-N-[1-(1-pyrazolyl)ethyl]acetamide of the following formula: ##STR1## a herbicidal composition comprising a herbicidally effective amount of the compound of formula (I); and a method of controlling weeds which comprises applying a herbicidally effective amount of the formula (I) to the locus where the weeds are growing or will grow.

Abstract: This invention relates to the use of certain diphenyl ether oxime derivatives as pre-harvest crop defoliants.

Abstract: A plant growth regulator comprising, as its active component, one or more compounds selected from the group consisting of [+]-hexylitaconic acid, and the dihydro derivative and lower alkyl monoesters thereof is effective for growth regulation of plants.

Abstract: Novel compounds are disclosed having the formula ##STR1## in which R is selected from the group consisting of alkoxy having from 1 to 6 carbon atoms, cycloalkyl having from 3 to 6 carbon atoms, alkyl having from 1 to 6 carbon atoms, thioalkyl having from 1 to 6 carbon atoms, chloroalkyl having from 1 to 6 carbon atoms, alkynyl having from 2 to 6 carbon atoms and ##STR2## wherein R.sub.2 is alkyl having from 1 to 6 carbon atoms or alkoxy having from 1 to 6 carbon atoms, and R.sub.3 is hydrogen or alkyl having from 1 to 6 carbon atoms.

Abstract: A method of increasing the yield of plants utilizing a compound of the formula ##STR1## wherein R is C.sub.3 -C.sub.14 alkyl or C.sub.3 -C.sub.6 alkenyl and R.sub.1 is hydrogen, C.sub.1 -C.sub.3 alkyl or phenyl.

Abstract: A benzyl-pyrimidinylalkyl-ether of the formula ##STR1## in which R is alkyl, optionally substituted cycloalkyl or optionally substituted phenyl, andX.sup.1, X.sup.2 and X.sup.3 each independently is hydrogen, halogen, alkyl, cycloalkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogenoalkylthio, cyano, optionally substituted phenoxy, optionally substituted phenylalkyl or optionally substituted phenylalkoxy,or an acid addition salt or metal salt complex thereof, which possesses fungicidal and plant growth-regulating properties. The corresponding pyrimidinyl-carbinols are also new.