Drying of harvested crops is necessary because it reduces the moisture content and allows for better storage. When crops are harvested, they contain a lot of moisture which can cause spoilage, mold growth, and insect infestation during storage. Drying the crops reduces the moisture content, which slows down these processes and allows the crops to be stored for longer periods without spoiling. Drying also helps to prevent the growth of microorganisms, which can cause diseases and spoilage of the crops. In addition, dried crops are easier to transport and can be sold to consumers when they are dry, making them more appealing and easier to handle. Therefore, drying harvested crops is an important step in ensuring food security and reducing post-harvest losses.