  The process of baryon number transfer due to string junction propagation in
rapidity is considered. It has a significant effect in the net baryon
production in $pp$ collisions at mid-rapidities and an even larger effect in
the forward hemisphere in the cases of $\pi p$ and $\gamma p$ interactions. The
results of numerical calculations in the framework of the Quark-Gluon String
Model are in reasonable agreement with the data with the same parameter values
for different energies.
