Organic fertilizer air drying equipment typically includes drying sheds, greenhouses or other structures designed to facilitate the drying of organic materials using air flow. These structures often have ventilation systems that allow for the control of temperature and humidity levels to optimize the drying process. Some organic materials, such as compost, can also be air-dried in open fields or in piles, but this method may be less controlled and may be affected by weather conditions. Overall, air drying is a relatively low-cost and energy-efficient method of drying organic materials for use as fertilizer.