The second factor in good storage is humidity. A moist atmosphere prevents water-loss from stored vegetables and helps root and leafy crops stay fresh longer. You may need to make sure that humidity remains fairly high in the storage area. Moist sand, wet burlap bags or a layer of wet sphagnum moss helps increase the humidity if the storage area is relatively dry. However, do not let excess moisture collect on stored produce.
Ventilation is also important.
Avoid excessive ventilation but keep sufficient air movement in the storage area to keep the temperature down, the humidity correct and foul odors out. Another hint to successful storage of garden products is to keep the storage area clean and sanitary at all times. The type of storage structure may be as varied as your imagination just as long as it fits the requirements of space, convenience, temperature, humidity and ventilation.