Agricultural production has experienced dramatic changes during
the past few decades. Traditionally, farming practices have
assumed that fields are homogeneous in nature, and management
practices seek to determine input application rates based on what
is best for the field as a whole (Isik and Khanna, 2003). Under traditional
farming (TF), the physical and chemical properties of the soil
determined from manual soil sampling are often used as a base to
recommend fertilizer for crops. Normally a large number of samples,
and hence large expense in cost and time, is needed to achieve
statistical significanceamongsamples in determiningmanagement