Fig. 1. Distribution of (a) 224 yield plots, (b) elevation, (c) 0 to 255 gray-scale soil color, and (d) apparent electrical conductivity within a 32-ha field.
Fig. 1. Distribution of (a) 224 yield plots, (b) elevation, (c) 0 to 255 gray-scale soil color, and (d) apparent electrical conductivity within a 32-ha field.