How to store onion (pyaaz) for 5 to 6 months without rotting in Nashik?

Good storage starts in the field, not the godown. Harvest rabi onion at proper maturity when about half the necks fall over, stop irrigation 10 to 15 days before, and cure the bulbs by field drying with tops on for a few days, then shade cure for 2 to 3 weeks. Store only well cured, dry necked, single centred, dark or light red bulbs; remove doubles, thick necks and any cut or bruised ones. Use a naturally ventilated kandha chawl with bottom and side ventilation, low height stacks, and good airflow to keep humidity around 65 to 70 percent. Inspect monthly and remove rotting bulbs. Even good chawls can lose a fair share over months, so grade strictly and do not overfill.