Harvesters are machines used in agriculture to efficiently gather crops from fields. They can cut, thresh, and clean grains like wheat, corn, and rice, significantly speeding up the harvesting process compared to manual methods. Harvesters come in various types, including combine harvesters, which perform multiple functions in one operation. These machines are essential for modern farming, as they help increase productivity and reduce labor costs. By using harvesters, farmers can harvest larger areas in a shorter time, ensuring that crops are collected at their peak ripeness. This technology plays a crucial role in the global food supply chain.