1. Site‐specific farming: A perspective on information needs, benefits, and limitations;Atherton B.C.;J. Soil Water Conserv.,1999
2. Bulk Density
3. Carter L.M. J.D.Rhoades andJ.H.Chesson.1993.Mechanization of soil salinity assessment for mapping. Paper 931557. Proc. ASAE Winter Meet. Chicago IL. 12–17 Dec. 1993. ASAE St. Joseph MI.