Effect of sowing date and urea fertilizer on some morphological traits, yield and yield components of wheat in Hashtroud, Iran climate condition

Among the agronomic practices, planting date and nitrogen fertilization are the prime factors that remarkably limit crop production. To evaluate the effect of sowing date and nitrogen fertilizer on some morphological traits and yield of wheat, a field experiment was conducted at a Farm of Hashtroud, Iran in 2015 growing season. The experiment was conducted based on randomized complete block design in split-plot experiment with three replications. Experimental treatments included Four sowing date of Sept. 27, Oct. 4, Oct. 11, and Oct. 18 as main plot and three nitrogen fertilizer rates of 0, 50 and 100 kg/ha as sub plots. Plant height, spike length, peduncle length and extrusion peduncle length increased with nitrogen fertilizer rates but, delay in sowing date decreased these traits. Also, delaying in sowing date decreased 1000 grains weight and grain yield per hectare. Nitrogen application significantly increased seeds per spike, 1000 grains weight, grain yield and harvest index. In general, wheat cultivation on Sept. 27th and using 100 kg/ha nitrogen fertilizer is recommended in Hashtroud region.