internal frictioninternal soil drainageinterrill erosionintersticesinterstratificationinterstratified mineralintertextic fabricintolerantintoxicationintracellular enzymeintrazonal soilsintrinsic permeabilityinversionion activityion selective electrodeion selectivityionic activity coefficientionic strengthionizing radiationiriron oxidesiron panironstoneirrigationirrigation efficiencyirrigation induced erosionisoelectric pointisomorphous substitutionisothermicisotic plasmic fabricisotopically exchangeable ionisotropic shrinkageiunctic fabric
