Certified Crop Advisor (CCA) Practice
Exam Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
Silt loam
Using the above soil textural triangle, what is the soil type name of a soil that contains
20% clay and 20% sand?
Loam
Silt loam
Clay
Silty clay loam
water & air movement, root growth, nutrient retention
Soil texture can affect:
Water and air movement
Root growth
Nutrient retention
All of the above
None of the above
granular
,Which type of soil structure is usually present in a field that has been in grass for 10
years?
Granular
Plate-like or platy
Angular blocky or cube-like
Columnar
excessive tillage
The most likely way a farmer can decrease or destroy good soil structure is by:
Growing continuous corn
Using no-tillage planting
Excessive tillage
Over-irrigating
bulk density
________ can provide an indication of soil compaction.
Clay content
CEC
Bulk Density
Sand content
potassium
Soil organic matter contributes all of the following for good plant nutrition except:
N
P
,K
S
Most micronutrients
stem weevil, sunflower head moth, head clipper-weevil, seed weevil
Which of the following sunflower insects overwinter in the larvae stage?
Stem weevil
Sunflower head moth
head clipper-weevil
Seed weevil
All of the above
2,000,000 pounds
An acre-furrow slice of soil (6-7 inch depth) weighs approximately:
100,00lbs
500,000lbs
1,000,000lbs
2,000,000lbs
2
A silt loam soil can typically provide plants about ______" of available water per foot of
soil.
soil fertility levels
Which of the following factors is least important in soil erosion by water?
Length of slope
Crop residue cover
, Soil fertility levels
Steepness of slope
have a net negative charge
Soil clay particles:
Have a net negative charge
Have a net positive charge
have no electrical charge
Attract anions
cations
Plant nutrient ions having a positive charge are called:
low water-holding capacity
Soils with a relatively low cation exchange capacity (for example, 1 to 10 meq/100g) can
generally be expected to have a:
Low water holding capacity
high clay content
High organic matter content
High lime requirement
calcium sulfate
Which of the following materials is NOT a limiting material?
Calcium carbonate
Magnesium carbonate
Calcium sulfate
Calcium oxide
Exam Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
Silt loam
Using the above soil textural triangle, what is the soil type name of a soil that contains
20% clay and 20% sand?
Loam
Silt loam
Clay
Silty clay loam
water & air movement, root growth, nutrient retention
Soil texture can affect:
Water and air movement
Root growth
Nutrient retention
All of the above
None of the above
granular
,Which type of soil structure is usually present in a field that has been in grass for 10
years?
Granular
Plate-like or platy
Angular blocky or cube-like
Columnar
excessive tillage
The most likely way a farmer can decrease or destroy good soil structure is by:
Growing continuous corn
Using no-tillage planting
Excessive tillage
Over-irrigating
bulk density
________ can provide an indication of soil compaction.
Clay content
CEC
Bulk Density
Sand content
potassium
Soil organic matter contributes all of the following for good plant nutrition except:
N
P
,K
S
Most micronutrients
stem weevil, sunflower head moth, head clipper-weevil, seed weevil
Which of the following sunflower insects overwinter in the larvae stage?
Stem weevil
Sunflower head moth
head clipper-weevil
Seed weevil
All of the above
2,000,000 pounds
An acre-furrow slice of soil (6-7 inch depth) weighs approximately:
100,00lbs
500,000lbs
1,000,000lbs
2,000,000lbs
2
A silt loam soil can typically provide plants about ______" of available water per foot of
soil.
soil fertility levels
Which of the following factors is least important in soil erosion by water?
Length of slope
Crop residue cover
, Soil fertility levels
Steepness of slope
have a net negative charge
Soil clay particles:
Have a net negative charge
Have a net positive charge
have no electrical charge
Attract anions
cations
Plant nutrient ions having a positive charge are called:
low water-holding capacity
Soils with a relatively low cation exchange capacity (for example, 1 to 10 meq/100g) can
generally be expected to have a:
Low water holding capacity
high clay content
High organic matter content
High lime requirement
calcium sulfate
Which of the following materials is NOT a limiting material?
Calcium carbonate
Magnesium carbonate
Calcium sulfate
Calcium oxide
