Distribution of the star formation rate in number of galaxies Mpc^-3 for the whole HRS late-type galaxies (black dots) and for the subsample of HI-normal (HI - def ≤ 0.4; blue dots) and HI-deficient (HI - def > 0.4; red dots) galaxies. The distribution is compared to several star formation rate luminosity function derived from Hα measurements for the general field. Star formation rates have been determined using the calibration used in this work for a Salpeter IMF.