The STAR experiment has unique capability for simultaneous measurement of photons and charged particles multiplicity at forward rapidity. We have studied limiting fragmentation (LF) in Au+Au collisions at 62.4 GeV, baryon stopping & nuclear modification factor in d+Au collisions at 200 GeV. The photons and charged hadrons have different centrality dependence of LF. This is because the primary source of photons are mesons while charged hadrons have significant baryons. This is established by studying LF for various collision systems, pions & measurement of baryon stopping. In d+Au collisions the net $\lambda$ yield (d-side) is found to increase with centrality and the rapidity loss is higher than for Au+Au collisions. We also observe a large suppression of charged hadrons in forward rapidity (d-side) compared to p+p collisions and small nuclear effect in the backward rapidity. Empirical scaling relations,comparison to nuclear shadowing and saturation models will be discussed.