  The cross sections for the formation of scalar resonances, leptoquarks or
squarks, in electron/positron-proton collisions at HERA are presented including
next-to-leading order QCD corrections. Depending mildly on the mass of the
resonances, the K-factors increase the production cross sections by up to 30%
if the target quarks are valence quarks. The QCD corrections to the partial
decay widths of leptoquarks/squarks to leptons and quarks are small. The
electron spectrum in the decays is softened nevertheless by perturbative gluon
radiation at a level of 3.4 GeV for a leptoquark/squark mass of 200 GeV.
