The inclusive distributions of gluons and pions for high-energy NN collisions are calculated. The results for several unintegrated gluon distributions (UGDs) from the literature are compared. We find huge differences in both rapidity and p_t of gluons and \pi s in NN collisions for different models of UGDs. The Karzeev-Levin UGD gives good description of momentum distribution of charged hadrons at midrapidities. We find, however, that the gluonic mechanism discussed does not describe the inclusive spectra of charged particles in the fragmentation region. Some of the missing mechanisms are calculated with the help of unintegrated parton distributions from the solution of the CCFM equation.

PACS numbers: 12.38.Bx, 13.85.Hd, 13.85.Ni