Cross sections for the reaction12C(p,&pgr;0)13Ng.s.have been measured at 153.5, 166.1, 186.0 and 204.0 MeV bombarding energy by detection of the13N recoil ions. The shapes of the differential cross section angular distributions agree well with those for the12C(p,&pgr;+)13Cg.s.reaction obtained by pion detection. The ratio of the (p,&pgr;+) to (p,&pgr;0) total cross section is close to two, as expected from isospin invariance, at 153.5, 186.0 and 204.0 MeV, but deviates significantly from this at 166.1 MeV bombarding energy. The (p,&pgr;+) and (p,&pgr;0) cross sections at the lower energies are both larger than expected from an extrapolation of the higher energy data.