Precision farming, also known as precision agriculture, is a systematic approach to crop management that generally uses information technology (IT) and satellite-based technology to identify, assess, and manage spatial and temporal variability of agronomic parameters (e.g., soil, pest or disease, fertigation etc.) within a field by applying the appropriate amount of input at the appropriate time to achieve optimum productivity and profitability while reducing environmental impact. Inputs (such as fertilizers, irrigation, and pesticides) are decided to be applied in the right amount, at the right time, and in the right place. This is generally referred to as "Site-specific management strategies" (SSMS).