1. Department of Soil Science; College of Agriculture; Isfahan University of Technology; Isfahan 84156-83111 Iran
2. CREA-Research Unit for Cropping Systems in Dry Environments (SCA); 70125 Bari Italy
3. Dipartimento di Scienze della Terra e Geoambientali; University of Bari Aldo Moro; 70121 Bari Italy
4. Signal and Image Centre; Royal Military Academy; 30 Avenue de la Renaissance 1000 Brussels Belgium