Amoyen, Julius Caeasar M.2026-07-302026-07-302026Amoyen, J. C. M. (2026). Principles of Soil Science. [Instructional Materials, Don Mariano Marcos Memorial State University - North La Union Campus, Sapilang, Bacnotan, La Union]. Lakasa ti Sirib, DMMMSU Institutional Repository.https://lakasa.dmmmsu.edu.ph/handle/123456789/2281The Soil Profile -- Soil Forming Rocks and Minerals -- Soil Texture Determination -- Soil Structure and Related Properties -- Soil Moisture -- Soil Colloids and Ion Exchange -- Soil pH and Liming -- Soil Organisms and Organic Matter -- Soil Taxonomy: Soils of La Unionen-USSoil Science / Land and SoilSoil chemistry (including soil pH, nutrients, and chemical properties)Soil fertility, testing, and fertilizersSoil physics (including soil texture, structure, moisture, and temperature)Soil physics (including soil texture, structure, moisture, and temperature)Soil conservation and erosion controlSoil biology and microbiology (including soil organisms and organic matter)Soil surveys, mapping, and land classificationSoil profileSolumRegolithParent materialOther