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Delineation of homogeneous field zones based on soil fertility indices in a durum wheat - chickpea rotation, Diacono, M., Abdelrahman H. M., Cocozza C., Benedetto De D., Troccoli A., Rubino P., and Castrignanò A. , Proceedings of The 8th European Conference on Precision Agriculture "Precision Agriculture 2011", ISBN 978-80-904830-5-7, Czech Centre for Science and Society, Prague, Czech Republic, (2011) Abstract

One of the most cost-effective approaches in precision farming is the managing of relatively contiguous homogeneous zones in the field. Soil samples were collected in a 3 ha field of the CRA-Cereal Research Centre’s experimental farm located in Foggia (southern Italy). Soil carbon mineralization indices and physical-chemical properties were interpolated by using the geostatistical techniques of kriging and co-kriging. The application of a clustering algorithm, based on a non-parametric density estimate, to the (co)kriged surface variables produced the subdivision of the field into four distinct classes. This information can be useful for the site-specific supply of nutrient inputs, in order to match crop requirements with intrinsic patterns of soil fertility.