CRSS 3060 Exam 1 Study Guide with Complete Solutions(SCORED A)
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 feet are in an acre? - ANSWER-43,560 feet
How many pounds does an "acre furrow slice" weigh? - ANSWER-2,000,000 lbs
From Northwest to Southeast, name the 5 soil regions of Georgia - ANSWER-1. Mountain Valley
2. Piedmont
3. Sand Ridge
4. Coastal Plains
5.Flatwoods
Name a state in the US where you are likely to find an alfisol, a mollisol, and ulttisol - ANSWER-Ohio, Kansas, GA
What is histosol? - ANSWER-Organic 'muk' soils
Describe south Georgia soil in terms of texture, pH, fertility, organic matter? It is considered a good soil? Why or why not? - ANSWER-In general the state of GA is/has:
1. Ultisols
2. Highly weathered
3. Poorly buffered
4. Acidic 5. Low fertility
6. Low OM
It isn't considered a 'good' soil
Name 5 physical properties of soil(listed in lecture) - ANSWER-1. Color
2. Texture
3. Structure
4. Pore space
5. Strength
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 feet are in an acre? - ANSWER-43,560 feet
How many pounds does an "acre furrow slice" weigh? - ANSWER-2,000,000 lbs
From Northwest to Southeast, name the 5 soil regions of Georgia - ANSWER-1. Mountain Valley
2. Piedmont
3. Sand Ridge
4. Coastal Plains
5.Flatwoods
Name a state in the US where you are likely to find an alfisol, a mollisol, and ulttisol - ANSWER-Ohio, Kansas, GA
What is histosol? - ANSWER-Organic 'muk' soils
Describe south Georgia soil in terms of texture, pH, fertility, organic matter? It is considered a good soil? Why or why not? - ANSWER-In general the state of GA is/has:
1. Ultisols
2. Highly weathered
3. Poorly buffered
4. Acidic 5. Low fertility
6. Low OM
It isn't considered a 'good' soil
Name 5 physical properties of soil(listed in lecture) - ANSWER-1. Color
2. Texture
3. Structure
4. Pore space
5. Strength
