Table 3. The proportion of total P for Olsen, Bray-1 and Mehlich-3 P as influenced by cropping systems.

Cropping Systems	Olsen P	Bray-1 P	Mehlich-3 P	Proportion of total P
				Olsen P	Bray-1 P	Mehlich-3 P
	mg kg-1			%
Vegetable-based	28.39	69.16	74.34	1.23	3.00	3.23
Fruit-based	19.80	47.81	49.59	0.88	2.14	2.15
Rice-based	16.21	34.84	29.07	0.78	1.67	1.26
Maize-based	14.10	28.69	28.28	0.65	1.33	1.23

Min., Minimum; Max., Maximum