Pot experiment was conducted at University of Agricultural Sciences, Bangalore, Karnataka, which received five treatments i.e., 0, 5, 10, 15, 20 kg ZnSO4/ha. Among all the Recommended NPK + ZnSO4 @ kg/ha recorded highest mean dry matter yields tomato. The amount zinc extracted by different extractants were in following order as Mehlich-3 - Zn > 0.1 N HCl AB-DTPA 0.01 EDTA DTPA M 1 NH4OAc (pH...