Machinery Performance Assessment Based on Records of Geographic Positiona
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Logging the geographic coordinates of agricultural machinery measured using a Global
Positioning System (GPS) receiver is a common practice in site-specific crop management. Yield,
fertilizer application and seed placement maps are useful data to make agronomic decisions. In
addition, the travel path itself reveals valuable information about machinery performance. Odd field
shapes, obstacles, or contour farming frequently require operators to increase the complexity of
maneuvering during different field operations. This usually reduces field efficiency. In this work, a
methodology was developed to parameterize the spatially variable characteristics of traffic patterns
and to define field areas with significant reduction in field efficiency. Geographic positions recorded
during harvesting of a field with complex shape were used to illustrate the method developed. The
information obtained can be used either to optimize the traffic patterns, if possible, or to reevaluate
the potential profitability of field areas with different degrees of machinery maneuvering complexity.
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