Pesticide losses . A measure of acidity or alkalinity of a soil, expressed in pH values. Reconstruction materials . Change in oxidation state of iron and manganese that changes the color of their compounds and how soluble the compounds are. Runoff class .
Higher classes have more chance of causing erosion.
S Salinity . A measure of soluble salts in soil based on electrical conductivity. Only salt tolerant plants can grow in soil with high salinity levels. Individual rock or mineral fragments from 0.05 millimeter to 2.0 millimeters in diameter. Most sand grains consist of quartz.