CERTIFIED CROP ADVISOR (CCA) EXAMINATION
COMPLETE QUESTIONS AND DETAILED SOLUTIONS
LATEST UPDATE THIS YEAR JUST RELEASED
Tested Coverage Areas (Short Summary)
1. Soil Fertility and Nutrient Management
o Essential nutrients, fertilizer recommendations, nutrient cycles, deficiencies, and soil testing
interpretation.
2. Soil and Water Management
o Soil physical properties, erosion control, drainage, irrigation scheduling, water conservation, and
salinity management.
3. Integrated Pest Management (IPM)
o Identification and management of weeds, insects, diseases, economic thresholds, and pesticide
stewardship.
4. Crop Production Systems
o Crop establishment, planting practices, crop rotation, tillage systems, harvest management, and
yield optimization.
5. Crop Nutrient Deficiencies and Toxicities
o Visual symptom recognition, tissue testing, corrective nutrient applications, and interactions
among nutrients.
6. Environmental Stewardship
o Nutrient loss prevention, water quality protection, conservation practices, sustainability, and
regulatory compliance.
7. Precision Agriculture
o GPS technology, GIS mapping, variable-rate applications, yield monitoring, remote sensing, and
data interpretation.
8. Soil Biology and Soil Health
o Organic matter management, microbial activity, cover crops, residue management, and
biological indicators.
9. Crop Diagnostics
o Diagnosing nutrient deficiencies, pest damage, diseases, herbicide injury, environmental stress,
and laboratory interpretation.
10. Agronomy Ethics and Professional Responsibilities
Ethical recommendations, client communication, recordkeeping, safety, regulations, and continuing
professional education.
Certified Crop Advisor (CCA) Examination
Question 1
,A Certified Crop Advisor receives soil test results indicating low phosphorus
availability despite adequate total soil phosphorus levels. Which explanation best
describes why crop phosphorus deficiency may still occur under these conditions?
A. Total phosphorus is always immediately available to plants.
B. Soil phosphorus availability depends upon chemical reactions, soil pH, and
fixation processes.
C. Nitrogen applications automatically increase phosphorus availability.
D. Potassium deficiency prevents phosphorus uptake completely.
Answer: B
Rationale: Much soil phosphorus becomes chemically fixed by calcium, iron, or
aluminum compounds depending on soil pH, reducing plant availability despite
substantial total phosphorus reserves.
Question 2
Which primary benefit does rotating corn with soybean generally provide
compared with continuous corn production under similar environmental and
management conditions?
A. Complete elimination of fertilizer requirements
B. Improved pest management, better nutrient cycling, and potential yield
advantages
C. Permanent elimination of weed competition
D. Removal of all soilborne pathogens
Answer: B
Rationale: Crop rotation interrupts pest cycles, improves nutrient utilization,
enhances soil structure, and often increases yields while reducing production risks
compared with monoculture systems.
Question 3
,A soil test indicates a pH of 5.2 for a field intended for alfalfa production. What
should a Certified Crop Advisor most likely recommend before establishment?
A. Apply elemental sulfur immediately.
B. Increase irrigation frequency only.
C. Apply agricultural lime according to soil test recommendations.
D. Avoid phosphorus fertilizer permanently.
Answer: C
Rationale: Alfalfa performs best in near-neutral soils. Liming acidic soils improves
nutrient availability, microbial activity, and root development while enhancing
nitrogen fixation.
Question 4
Which nitrogen fertilizer management practice most effectively reduces nitrate
leaching losses on coarse-textured soils receiving supplemental irrigation?
A. Applying the entire nitrogen requirement before planting
B. Splitting nitrogen applications according to crop demand
C. Increasing application rates beyond recommendations
D. Eliminating irrigation throughout the growing season
Answer: B
Rationale: Split applications synchronize nitrogen availability with crop uptake,
minimizing excess soil nitrate susceptible to leaching following rainfall or
irrigation.
Question 5
When scouting soybean fields for insects, why are economic thresholds preferred
instead of automatically applying insecticides after detecting the first insects?
, A. Every insect population causes economic loss immediately.
B. Thresholds help maximize beneficial insect activity while preventing
unnecessary pesticide applications.
C. Thresholds eliminate all crop scouting requirements.
D. Thresholds guarantee complete pest eradication.
Answer: B
Rationale: Economic thresholds reduce unnecessary pesticide use, preserve
beneficial organisms, lower costs, and delay pesticide resistance while protecting
profitability.
Question 6
Which soil property most directly influences water-holding capacity available for
crop root uptake?
A. Soil texture and organic matter content
B. Atmospheric humidity only
C. Plant height exclusively
D. Seed size
Answer: A
Rationale: Soil texture determines pore distribution, while organic matter
improves aggregation and water retention, directly influencing plant-available
water.
Question 7
Why should fertilizer recommendations be based on representative soil sampling
procedures rather than random convenience samples?
A. Random samples always overestimate fertility.
B. Representative sampling improves the accuracy of fertilizer recommendations
COMPLETE QUESTIONS AND DETAILED SOLUTIONS
LATEST UPDATE THIS YEAR JUST RELEASED
Tested Coverage Areas (Short Summary)
1. Soil Fertility and Nutrient Management
o Essential nutrients, fertilizer recommendations, nutrient cycles, deficiencies, and soil testing
interpretation.
2. Soil and Water Management
o Soil physical properties, erosion control, drainage, irrigation scheduling, water conservation, and
salinity management.
3. Integrated Pest Management (IPM)
o Identification and management of weeds, insects, diseases, economic thresholds, and pesticide
stewardship.
4. Crop Production Systems
o Crop establishment, planting practices, crop rotation, tillage systems, harvest management, and
yield optimization.
5. Crop Nutrient Deficiencies and Toxicities
o Visual symptom recognition, tissue testing, corrective nutrient applications, and interactions
among nutrients.
6. Environmental Stewardship
o Nutrient loss prevention, water quality protection, conservation practices, sustainability, and
regulatory compliance.
7. Precision Agriculture
o GPS technology, GIS mapping, variable-rate applications, yield monitoring, remote sensing, and
data interpretation.
8. Soil Biology and Soil Health
o Organic matter management, microbial activity, cover crops, residue management, and
biological indicators.
9. Crop Diagnostics
o Diagnosing nutrient deficiencies, pest damage, diseases, herbicide injury, environmental stress,
and laboratory interpretation.
10. Agronomy Ethics and Professional Responsibilities
Ethical recommendations, client communication, recordkeeping, safety, regulations, and continuing
professional education.
Certified Crop Advisor (CCA) Examination
Question 1
,A Certified Crop Advisor receives soil test results indicating low phosphorus
availability despite adequate total soil phosphorus levels. Which explanation best
describes why crop phosphorus deficiency may still occur under these conditions?
A. Total phosphorus is always immediately available to plants.
B. Soil phosphorus availability depends upon chemical reactions, soil pH, and
fixation processes.
C. Nitrogen applications automatically increase phosphorus availability.
D. Potassium deficiency prevents phosphorus uptake completely.
Answer: B
Rationale: Much soil phosphorus becomes chemically fixed by calcium, iron, or
aluminum compounds depending on soil pH, reducing plant availability despite
substantial total phosphorus reserves.
Question 2
Which primary benefit does rotating corn with soybean generally provide
compared with continuous corn production under similar environmental and
management conditions?
A. Complete elimination of fertilizer requirements
B. Improved pest management, better nutrient cycling, and potential yield
advantages
C. Permanent elimination of weed competition
D. Removal of all soilborne pathogens
Answer: B
Rationale: Crop rotation interrupts pest cycles, improves nutrient utilization,
enhances soil structure, and often increases yields while reducing production risks
compared with monoculture systems.
Question 3
,A soil test indicates a pH of 5.2 for a field intended for alfalfa production. What
should a Certified Crop Advisor most likely recommend before establishment?
A. Apply elemental sulfur immediately.
B. Increase irrigation frequency only.
C. Apply agricultural lime according to soil test recommendations.
D. Avoid phosphorus fertilizer permanently.
Answer: C
Rationale: Alfalfa performs best in near-neutral soils. Liming acidic soils improves
nutrient availability, microbial activity, and root development while enhancing
nitrogen fixation.
Question 4
Which nitrogen fertilizer management practice most effectively reduces nitrate
leaching losses on coarse-textured soils receiving supplemental irrigation?
A. Applying the entire nitrogen requirement before planting
B. Splitting nitrogen applications according to crop demand
C. Increasing application rates beyond recommendations
D. Eliminating irrigation throughout the growing season
Answer: B
Rationale: Split applications synchronize nitrogen availability with crop uptake,
minimizing excess soil nitrate susceptible to leaching following rainfall or
irrigation.
Question 5
When scouting soybean fields for insects, why are economic thresholds preferred
instead of automatically applying insecticides after detecting the first insects?
, A. Every insect population causes economic loss immediately.
B. Thresholds help maximize beneficial insect activity while preventing
unnecessary pesticide applications.
C. Thresholds eliminate all crop scouting requirements.
D. Thresholds guarantee complete pest eradication.
Answer: B
Rationale: Economic thresholds reduce unnecessary pesticide use, preserve
beneficial organisms, lower costs, and delay pesticide resistance while protecting
profitability.
Question 6
Which soil property most directly influences water-holding capacity available for
crop root uptake?
A. Soil texture and organic matter content
B. Atmospheric humidity only
C. Plant height exclusively
D. Seed size
Answer: A
Rationale: Soil texture determines pore distribution, while organic matter
improves aggregation and water retention, directly influencing plant-available
water.
Question 7
Why should fertilizer recommendations be based on representative soil sampling
procedures rather than random convenience samples?
A. Random samples always overestimate fertility.
B. Representative sampling improves the accuracy of fertilizer recommendations
