%0 Journal Article %T Quarkonium Decays and Production in NRQCD %A Fabio Maltoni %J Physics %D 2000 %I arXiv %X Some examples of the most recent applications of the NRQCD factorization approach to quarkonium phenomenology are presented. In the first part of the talk the NLO calculations for $\chicj$ and $\Upsilon$ decays rates are compared to the data and the results critically analyzed. In the second part, I show how information on the non-perturbative matrix elements can be extracted from the hadronic fixed-target experiments and eventually used to test their universality. %U http://arxiv.org/abs/hep-ph/0007003v1