Precision Agriculture Loan Program Act of 2021 This bill establishes a loan program within the Farm Service Agency to assist agricultural producers in purchasing precision agriculture equipment, such as geospatial mapping, data management and analytics software, and network connectivity products and solutions. Precision agriculture refers to managing, tracking, or reducing crop or livestock production inputs, including seed, feed, fertilizer, chemicals, water, and time, at a heightened level of spatial and temporal granularity to improve efficiencies, reduce waste, and maintain environmental quality.