Abstract: Compounds defined by the generic formula ##STR1## wherein R is selected from the group consisting of C.sub.1 -C.sub.6 alkyl including methyl, ethyl, propyl, butyl, pentyl and hexyl, preferably C.sub.2 -C.sub.4 alkyl including ethyl, propyl and butyl, C.sub.1 -C.sub.3 alkylthio including methylthio, ethylthio and propylthio, preferably methylthio and pentafluoroethyl; R.sub.1 is selected from the group consisting of hydrogen, methyl and ethyl, preferably methyl; m is 0 or 1; and n is 1 or 2, exhibit herbicidal activity.
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.