SCSC 301 Study Guide - Midterm Guide: Bulk Density, Clay Minerals, Vermiculite
Document Summary
6. 9: calcium carbonate is probably present in the subsoil of this soil. C ph greater than 7. 6: this soil is the most highly weathered and can supply the fewest nutrients from mineral sources to plants. A highly weathered fe, al oxides/hydroxides: this surface soil would require the largest addition of an acid or acid-forming compound to reduce the ph significantly. D cec ph below 7. 6 (don"t lower in calcium carbonate soils: this surface soil has the highest potassium supplying power. E mica/illite: workability (ease of manipulation, tillage, etc. ) will be a limiting factor in the utilization of this soil. Low bulk density: this surface soil has the best balance between physical and chemical properties for supporting plant growth. E ph (6-7), organic matter (high), texture (high in clay), structure (granular: this non-calcareous surface soil will require the smallest amount of limestone to effect a 20% change in base saturation.