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SCSC 301 TAMU EXAM 2 STUDY GUIDE: Soil Science Concepts and Definitions, Exams of Social Sciences

This study guide provides a comprehensive overview of key concepts and definitions related to soil science, focusing on soil horizons, epipedons, soil orders, and water potential. It includes a list of soil orders, their characteristics, and diagnostic horizons, along with definitions of important soil properties like water potential and its components. The guide is particularly useful for students preparing for scsc 301 tamu exam 2.

Typology: Exams

2023/2024

Available from 11/07/2024

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Download SCSC 301 TAMU EXAM 2 STUDY GUIDE: Soil Science Concepts and Definitions and more Exams Social Sciences in PDF only on Docsity! SCSC 301 TAMU EXAM 2 STUDY GUIDE p - Answers-plow t - Answers-clay g - Answers-glade colors o - Answers-oxides k - Answers-calcium carbonate o_ - Answers-indicates organic horizon y - Answers-gypsum (calcium sulfate) z - Answers-salts h - Answers-humis s - Answers-sesquioxides (A) epipedon - Answers-Mollic, Umbric, Melanic, Ochric (O) epipedon - Answers-Histic (E) epipedon - Answers-Albic (Bk) epipedon - Answers-Calcic (Bkm) epipedon - Answers-petrocalcic (By) epipedon - Answers-Gypsic (Bym) epipedon - Answers-Petrogypsic (Bz) epipedon - Answers-Salic (Btn) epipedon - Answers-Natric (Bw) epipedon - Answers-Cambric (Bt) epipedon - Answers-Argillic (Bo) epipedon - Answers-Oxic (Bhs) epipedon - Answers-Spodic (Bqm) epipedon - Answers-Duripan (Bx or Btx) - Answers-Fragipan how many soil orders are there? - Answers-12 -ent - Answers-Entisols has ochric epipedon, no diagnostic subsurface horizons, no B horizon, least weathered -ept - Answers-Inseptisols Ochric or umbric epipedon Will have cambric horizon semi arid or humid climate A, Bw, C with no texture change -oll - Answers-Mollisols Mollic epipedon, best soil, no specifically required endopedons -alf - Answers-Alfisols Umbric or ochric epipedon Argillic horizon with high bases (>35%) -ult - Answers-Ultisols Highly weathered, ochric or umbric epipedon, Argillic horizon with low base status (<35%), SE United States, accumulation of clay must be present in B horizon -ert - Answers-Vertisol must have clayey texture in all horizons maximum retentive capacity - Answers-gravimetric water content when soil is saturated 0 bar field capacity - Answers-1/3 bar permanent wilting point - Answers-15 bar hydroscopic point - Answers-31 bar hygroscopic coefficient - Answers- which comes first, humic or sesquioxides? - Answers-Bh then Bs potential is always ___ (positive or negative) - Answers-Negative