Soil Test-Based Fertilizer Requirement for Specific Yield Targets of Wheat Invertic ustocrepts

Based on field experiment conducted on a Vertic ustocrepts with wheat (GW 496) ,by dividing each of the four fertility strip into 12 subplots which received 9 selected combinations out of 5 levels of N (0, 60, 90, 120, 150 kg ha^-1) five levels of P₂O₅(0, 30, 60, 90,120 kg ha^-1) and four levels of K₂O (0, 30, 60, 90 kg ha-1),with three control treatments, fertilizer prescription equations were calculated .The results of field verifications trials, conducted at different locations showed that yield targets were achieved below ± 10 per cent variation, but adjusted fertilizer prescription equations were fitted only at yields targets of 50 and 55 qha^-1 grain yield of wheat. The highest return was obtained in yield targets of 50 and 55 qha^-1.