Improper plant density and N management particularly with continued soil nutrient mining are major factors contributing to low crop yield which is not economical to farmers in the maize based system in Himalayan country Nepal. To feed ever burgeoning population, there is a need to increase production and productivity of the crop. Hybrid maize may lead to substantial increase in total maize production at the same time small farmers had constrained to get seed. At this situation the ultimate option for increasing the productivity through population and nitrogen level management. Winter maize...