Fig. 11. Relationship between Bray-1 P and the ratio of P extracted by the Bray-1 extractant and 6 M HCl for the Mexico soil sampled Spring 1997.
Fig. 11. Relationship between Bray-1 P and the ratio of P extracted by the Bray-1 extractant and 6 M HCl for the Mexico soil sampled Spring 1997.