This invention relates to the control and/or eradication of Eumycotina type fungi is phanerogamia plants with one or more of the substituted carboxylic amides having the formula: ##STR1## wherein A is an organic radical of from 2 to 14 carbon atoms and is selected from the group consisting of hydroxyalkyl, hydroxyalkoxy, haloalkyl radicals and substituted alkylether radicals having the structure --R.sub.1 --O--R.sub.2 --, where R.sub.1 is alkylene of from 1 to 6 carbon atoms and R.sub.2 is alkyl of from 1 to 6 carbon atoms substituted with a hydroxy, carboxylate or halocarboxylate group; and wherein R is an acyclic alkyl radical, an alkenyl radical having one or more doubly bonded carbon atoms, a mono- or di- fluorinated benzyl radical or a mono- or di- chlorinated benzyl radical, said R radical containing from 4 to 20 carbon atoms. The invention also relates to a method of using a fungicidal amount of said carboxylic acid amide or carboxylic amide mixtures on phanerogamia plants for control or eradication of Eumycotina infection.