This study was carried out at National Cattle Research Program Rampur Chitwan farm in 2019-20. There was four different seed rate 4, 5, 6 and 7 kg rate of maize in hydroponic fodder production. The green matter yield per m2 was high (28.09±0.55) in 7kg/per meter square seed rate followed by 6,5,4 kg (23.97±0.13, 20.68±0.27 and 16.46±0.25) respectively . There were no significant differences in root and seed weight (% of total yield) in different seed rate7, 6, 4 and 5 were 69.00±0.38, 68.56±0.57, 68.45±0.76 and 68.22±0.45 respectively There was significant differences in the green matter yield per kg seed in this study was (4.11, 4.13, 3.99 and 4.01 kg) and dry matter yield per kg seed (0.83, 0.84, 0.86 and 0.90 kg) with seed rates 4, 5, 6, 7 kg m2 respectively. There was no significant difference in composition (root with germinated seed, leaves and plants) Moisture, CP, EE, CF, NFE and TA of hydroponic fodder in different seed rate production. It can be concluded from this study that maize with 7 kg per meter square can be considered the best choice for production of hydroponic green fodder with less water consumption.