  We examine the effect of an anomalous flavor changing chromomagnetic moment
which allows direct top quark production (two partons combining into an
unaccompanied single top quark in the s-channel) at hadron colliders. We
consider both t-c-g and t-u-g couplings. We find that the anomalous charm quark
coupling parameter $\kappa_c / \Lambda$ can be measured down to $.06
TeV^{-1}(.009 TeV^{-1}$) at the Tevatron with the Main Injector upgrade(LHC).
The anomalous up quark coupling parameter $\kappa_u / \Lambda$ can be measured
to $.02 TeV^{-1}(.003 TeV^{-1}$) at the Tevatron(LHC).
