Renormalisation of lattice currents and the calculation of decay constants for dynamical staggered fermions

A numerical calculation of the lattice staggered renormalisation constants at $\beta =5.35$, $m=0.01$ is presented. It is seen that there are considerable non-perturbative effects present. As an application the vector decay constant $f_{\rho }$ is estimated. (LAT92 contribution, one LATEX file with 3 postscript figures appended.)