  We study charm particle production in hadron-hadron collisions. After
calculating perturbatively the charm quark differential cross section, we study
the hadronization mechanisms. It is shown that recombination is the key to
understand the so called Leading Particle Effect in charm meson production. For
charm baryon production, however, leading particle effects are due to a
combination of contributions coming from both, the recombination and the
fragmentation mechanisms. We compare our calculations to experimental data on
charm hadron production in $\pi^- N$ and $p N$ interactions from several
experiments and show that a consistent description of them can be reached
without the aid of other mechanims than recombination and fragmentation.
