Wheat [Triticum aestivum(L.)] is the major cereal crop of the Chaouia (dryland) region of Morocco. Efforts for self‐sufficiency in wheat will require improved fertility management on the calcareous soils of this region. This research was undertaken to evaluate the suitability of five soil P extractors for predicting the need for P fertilization on 15 important soils in this region. The Olsen (0.5MNaHCO3), the Soltanpour (1.0MNH4HCO3+ 0.005MDTPA) and their dilution modifications, and CaCl2solution P method were evaluated in laboratory and greenhouse experiments.