Soil Properties and Profiles Activities for TodayTexture: Determine texutral classes by feel, and identify textures of unknown samples;
Soil Color: Understand terminology of the Munsell color system (hue, value, chroma) and use it to determine soil color;
Learn the nomenclature for master horizon suffixes, and transition horizons, and use them in labeling horizons on a monolith or soil profile description. Soil TextureTextural classes of soils are named on their predominant feel and correspond to percentages of sand, silt, and clay.
Soil TextureSandy textures- feel gritty
Silty textures- feel smooth, soft, and floury
Clay textures- stiff, waxy, and plastic How to TextureGolf-ball-sized amount of soil in your hand
Soil needs to be moist but not wet(add water slowly)
Knead the soil in your hand, between your thumb and fingers.
Ribbon (?)/ Gritty, waxy, smooth How To Texture Soil ColorDark brown to black- ( A horizon) top soils, humus- decomposed organic material. A few percent of humus gives a brownish color and up to 5% the soil becomes black. Soil ColorReds and Yellows- (B horizons) iron oxide formed during weathering,
Fe+3 is well oxidized (well-drained)