Agricultural production and productivity are influence by several factors. Seed is one of the vital input factors which significantly help in enhancing the productivity of crops. The seed production of onion is very difficult phenomena as it is produced in two phases. In first phase, the bulb production is required, while under second phase the seed production takes place from the bulbs.). Bulb size and plant spacing are the key factors in producing quality onion seeds, also Lack of use optimum fertilizer dose may be a major constraint of maximum onion yield