An Experiment was conducted on a farmer field at Torikhet Chitwan, Nepal, during 2011/2012 in order to know      the soil properties and wheat productivity influenced by nitrogen levels and sowing dates under zero tillage. The experiment consisted four nitrogen levels (60, 100, 140 and 180 N kg ha-1) and three sowing dates (Nov. 25, Dec. 10 and Dec. 25) and laid out in split plot design. The plant characters, soil physical and chemical properties, yield attributes and yields were significantly influenced by different treatments. The result showed that the highest grain yields (4.84 t ha-1 and 4.97 t ha-1, respectively) were obtained from the crop sown on Nov. 25 and from the application of 140 N kg ha-1. The highest chlorophyll value was recorded on the crop sown on the same Nov.25 and from the application of 140 N kg ha-1. Nitrogen dynamics including total nitrogen uptake, total soil N, residual N and unaccountable N were found highest on the crop sown on Nov. 25 and from the application of 180 N kg ha-1 but was the lowest (30.59 N kg ha-1). The highest total phosphorus uptake, total soil phosphorus, residual phosphorus and unaccountable phosphorus were observed on the crop sown on Nov. 25. The net income were highest (NRs. 49,640 ha-1 and NRs. 52,510 ha-1, respectively) on the crop sown on Nov. 25 and from 140 N kg ha-1.

An Experiment was conducted on a farmer field at Torikhet Chitwan, Nepal, during 2011/2012 in order to know      the soil properties and wheat productivity influenced by nitrogen levels and sowing dates under zero tillage. The experiment consisted four nitrogen levels (60, 100, 140 and 180 N kg ha-1) and three sowing dates (Nov. 25, Dec. 10 and Dec. 25) and laid out in split plot design. The plant characters, soil physical and chemical properties, yield attributes and yields were significantly influenced by different treatments. The result showed that the highest grain yields (4.84 t ha-1 and 4.97 t ha-1, respectively) were obtained from the crop sown on Nov. 25 and from the application of 140 N kg ha-1. The highest chlorophyll value was recorded on the crop sown on the same Nov.25 and from the application of 140 N kg ha-1. Nitrogen dynamics including total nitrogen uptake, total soil N, residual N and unaccountable N were found highest on the crop sown on Nov. 25 and from the application of 180 N kg ha-1 but was the lowest (30.59 N kg ha-1). The highest total phosphorus uptake, total soil phosphorus, residual phosphorus and unaccountable phosphorus were observed on the crop sown on Nov. 25. The net income were highest (NRs. 49,640 ha-1 and NRs. 52,510 ha-1, respectively) on the crop sown on Nov. 25 and from 140 N kg ha-1.