Electronic prescription map
A digital file containing site-specific instructions that guide automated agricultural equipment to vary application rates of inputs across a field based on localized data.
Также говорят: variable rate application map, VRA map, prescription file
Prescription maps are generated by agronomic software using soil maps, yield historical data, or vegetation indices. They serve as the brain for variable rate technology (VRT), instructing sprayers, spreaders, or planters to adjust rates automatically according to the specific needs of each zone.
The primary advantage of this approach is the efficient allocation of inputs, which reduces waste, minimizes environmental impact, and improves crop uniformity. By matching resource application to the varying yield potential of soil, farmers can optimize their total input costs while maximizing production efficiency.
Common pitfalls include relying on inaccurate or outdated historical data, which can lead to suboptimal fertilization strategies. Furthermore, technical failures often occur if the equipment is not properly calibrated or if there is a communication mismatch between the farm management software and the controller.