Evaluation of fertilizer and seed rate in wheat (Triticum aestivum) under different tillage conditions after transplanted rice (Oryza sativa).

Two experiments were conducted during winter. seasons of 1993-94 and 1994-95 at Kamal to optimize the fertilizer and seed requirements under different tillage conditions in wheat (Triticum aestivum L. emend. Fiori and Paol.) sown after transplanted rice (Oryza sativa L.). From mean of 2 years, zero tillage recorded maximum wheat yield (4.70 tonnes/ha in first and 4.86 tonnes/ha in second experiment) compared with the yield obtained under conventional tillage (4.12 tannes/ ha in first and 4.59 tonnes/ha in second experiment). Application of fertilizers @ 150:75:50 (N :P 2 O 5 :K 2 O kg/ha) gave maximum grain yield (4.62 tonnes/ha), which was significantly higher in both the years, compared with the yield (3.98 tonnes/ha) obtained by recommended level of N : P 2 P 5 :K 2 O (120:60:40). Application of 150 kg seed ha recorded maximum seed yield (4.95 tonnes/ha) over the recommended rate of 125 kg/ha (4.75 tonnes/ha) and was found to be an appropriate seed rate for wheat grown after transplanted rice.