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Exam (elaborations)

CRSS 3060 Exam 1 Study Guide with Complete Solutions(SCORED A+)

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What is soil? - ANSWER-1. The surface layer of Earth that supports plant life, any place for growth or development, ground or earth 2. Soil = Air + Water + Solids 3. Sand, Silt, Clay What are the five functions of soil? - ANSWER-1. Medium for plant growth 2. Water supply & purification 3. Nature's recycling system 4. Habitat for organisms 5. Engineering medium How many inches of rain per year do we get in Tiftarea? - ANSWER-Approximately 52in. What are the 5 soil forming factors? - ANSWER-1. Parent material 2. Climate 3. Biota 4. Topography 5. Time Draw, label and understand the volume compositions of soil graph - ANSWER-Lecture #1 Slide # 13 List and describe the 3 methods to measure soil texture as done in lab, from least complicate/least accurate to most complicated/most accurate - ANSWER-1. Feel Test: touched the soil to feel the different textures 2. Shifting Method: put the soil through multiple layers that got finer as the layers went down 3. Hydrometer: placed in a glass column to measure the density used to calculate sand, silt, clay Name a physical, chemical and biological property of soil we will study in this course - ANSWER-1. Physical: texture, density 2. Chemical: pH, CEC, nutrients 3. Biological: earthworms, microbial biomass What is the difference between soil texture and soil structure? What would be examples for each for both a topsoil and subsoil for south Geogria soil (we did in lab) - ANSWER-1. Texture: the separates (sand, silt, clay) 2. Structure: how the separates are held together (blocky, platy, granular, and prismatic) Examples in lab: A. Topsoil: the texture was loamy sand and the structure was granular B. Subsoil: the texture was sandy loam and the structure was blocky Explain "Liebig's Law of the Minimum" - ANSWER-'Weakest Link Theory'; plant growth is dictated by the lowest/scarcest factor How many essential plant nutrients are there according to Dr. Harris ? - ANSWER-16 (CB HOPKNS CaFe Cl Mn Mo Co Zn Mg) How many

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Uploaded on
April 17, 2024
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