An experiment was conducted at research farm of Rajendra Agricultural University, Pusa (Samastipur), Bihar during rabi season of 2003-04 with four sowing dates ., 27th November, 11th December, 25th December and 8th January along with four test varieties ., K 9107, PBW 343, HP 1744 and NW 1014 under split plot design to find out suitable sowing time for newly released wheat varieties under irrigated condition of Bihar and their economics of production. | Effect of sowing dates and wheat genotypes on growth, yield and production economics