Nutrient utilization of late sown wheat (Triticum aestivum) on acid soil (Haplustalf) of Bihar plateau

A field experiment was conducted during winter season of 1994-96 to study t he nutrient utilization of late sown wheat (Triticum aestivum L. emend.Fior i.&Paol.) in split-plot design on acid soil (Haplustalf) of Bihar plateau. Main-plot included 4 seeding time, viz moderately late(1 December), late (1 6 December), very late(1 January) and extremely late (16 January) and sub-p lot consisted of 4 nutrient levels, viz N0P0K0, N40P8.7K16.6, N80P17.5K24.9 and N120P26.2K33.2 Moderately late planted wheat responded to N120P26.2K33 .2 yielding 4 661 kg/ha grain and removed 173.44, 16.67 and 148.00 kg/ha N, P and K respectively with 60.28 % nutrient uptake efficiency. Similarly, la te planted crop responded to N80P17.5K24.9 yielding 3 061 kg/ha grain and a bsorbed 123.33, 9.67 and 95.21 kg/ha N, P and K respectively with 45.28 % n utrient uptake efficiency. Likewise very late planted wheat exhibited respo nse only up to N40P8.7K16.6 gave 2 035 kg/ha grain and removed 76.90, 6.51 and 70.28 kg/ha N, P and K respectively with uptake efficiency of 34.39 %. However, extremely late planted wheat did not respond to fertilizer applica tion. Nutrient-use efficiency gradually decreased either with subsequent de lay in seeding or increasing nutrient level.