CCA Exam Soil And Water Management Exam
With 100% Correct Answers 2024.
Benefits of Manure Application
Addition of OM, water holding capacity, and soil nutrients
What happens to nitrogen applied through manuring?
It can volatilize about 35% in a week if not incorporated
Roughly how much available water in/ft is in fine sand to loam respectivly
1in to 2in
Definition of field capacity
amount of moisture soil can hold against pull of gravity
Definition of permanent wilting point
soil moisture is held so tight that plants can't obsorb it
Definition of plant available water
soil water difference between field capacity and permanent wilting point
Difference in porosity between tillage systems and no-till systems?
Tillage increases porosity temporarily and no-till increases permanently
Wetting and drying and freezing and thawing does what to soil?
Increases water stable soil aggregates
What is surface crusting?
When raindrops fall, it breaks up the soil and finer clay particles accumulate at the top and reduce water
infiltration
How far can windbreaks protect soil?
10x height of the tree
Definition of sheet erosion?
Film of water forms and moves down the soil taking particles with it
Definition of rill erosion?
Higher volume than sheet erosion
Definition of gully erosion?
With 100% Correct Answers 2024.
Benefits of Manure Application
Addition of OM, water holding capacity, and soil nutrients
What happens to nitrogen applied through manuring?
It can volatilize about 35% in a week if not incorporated
Roughly how much available water in/ft is in fine sand to loam respectivly
1in to 2in
Definition of field capacity
amount of moisture soil can hold against pull of gravity
Definition of permanent wilting point
soil moisture is held so tight that plants can't obsorb it
Definition of plant available water
soil water difference between field capacity and permanent wilting point
Difference in porosity between tillage systems and no-till systems?
Tillage increases porosity temporarily and no-till increases permanently
Wetting and drying and freezing and thawing does what to soil?
Increases water stable soil aggregates
What is surface crusting?
When raindrops fall, it breaks up the soil and finer clay particles accumulate at the top and reduce water
infiltration
How far can windbreaks protect soil?
10x height of the tree
Definition of sheet erosion?
Film of water forms and moves down the soil taking particles with it
Definition of rill erosion?
Higher volume than sheet erosion
Definition of gully erosion?
