Question: asking about the onion varieties , spacing and fertilisers doses
Answer: suggestion=
onion varieties- pusa red, pusa ratnar, pusa white,  punjab red round, pusa madhuri, arka niketan etc.
spacing- 20cm * 10 cm  ( row to row and plant to plant ). 
fertiliser doses- 12 kg urea / bigha , 15 kg dap / bigha, 11 kg mop / bigha.