125+ Free CCA Practice Questions

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CPAg Certified Professional Agronomist

Practice Questions100 questions

2026 Statistics

Key Facts: CCA Exam

150

Exam Questions

ASA

Competency Areas

ICCA Performance Objectives

CEUs per 2 Years

2026 ICCA Policy Manual

$78,770

Median Ag Scientist Salary

BLS 2024

Job Growth 2024-2034

BLS

13,000+

Active CCAs

ASA

The full International CCA exam has 150 questions across four competency areas and a 2.5-hour time limit. ICCA does not publish section weights, a universal percentage passing score, or an official overall pass rate; cut scores are established through a Modified Angoff process. Certification requirements depend on the applicant's Local Board or international route and include applicable exams, documented experience, references, and ethics requirements.

Sample CCA Practice Questions

Try these sample questions to test your CCA exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 125+ question experience with AI tutoring.

1Which of the following represents the 4Rs of nutrient stewardship?

A.Right source, right rate, right time, right place

B.Right rotation, right residue, right rainfall, right return

C.Right root, right row, right rainfall, right rate

D.Right rate, right ratio, right region, right rainfall

Explanation: The 4R Nutrient Stewardship framework, developed by the fertilizer industry and widely adopted by CCAs, stands for Right Source, Right Rate, Right Time, and Right Place. It is the foundation for site-specific nutrient recommendations that balance productivity, profitability, and environmental protection.

2Which form of nitrogen is most susceptible to leaching losses in well-drained soils?

A.Ammonium (NH4+) (incorrect for this management context)

B.Nitrate (NO3-)

C.Urea (incorrect for this management context)

D.Organic N (incorrect for this management context)

Explanation: Nitrate (NO3-) carries a negative charge and is not retained by the predominantly negatively-charged soil cation exchange sites. It moves freely with soil water and is the primary form of N lost via leaching, especially below the root zone in coarse-textured, well-drained soils.

3A soil test reports 30 ppm P (Bray P1). Approximately how many pounds of P per acre does this represent in the top 6 inches (assuming a bulk density of 1.3 g/cm3)?

A.30 lb P/acre (incorrect for this management context)

B.60 lb P/acre

C.78 lb P/acre (incorrect for this management context)

D.150 lb P/acre (incorrect for this management context)

Explanation: For a 6-inch soil sample, ppm × 2 ≈ lb nutrient/acre is the standard conversion (USDA/UF-IFAS), assuming ~2 million lb soil in an acre-furrow slice. With bulk density 1.3 g/cm³ (slightly below the 1.33 reference), 30 ppm × 2 × (1.3/1.33) ≈ 59 lb P/acre, rounded to 60.

4What is the primary purpose of a urease inhibitor such as NBPT?

A.Prevent nitrification of ammonium to nitrate

B.Slow urea hydrolysis; reduce NH3 volatilization

C.Increase phosphorus solubility (incorrect for this management context)

D.Inhibit denitrification in saturated soils

Explanation: NBPT (N-(n-butyl) thiophosphoric triamide) is a urease inhibitor that temporarily blocks the urease enzyme responsible for converting urea to ammonium. By slowing hydrolysis, it keeps urea intact longer and gives rainfall or incorporation time to move the fertilizer into the soil, reducing NH3 volatilization losses from surface-applied urea.

5Which soil test extraction method is most appropriate for acidic soils (pH < 7.0) to measure available phosphorus?

A.Olsen (sodium bicarbonate) (incorrect for this management context)

B.Bray P1 (dilute HCl + NH4F)

C.Morgan (incorrect for this management context)

D.Mehlich-3 only at pH > 7.5 (incorrect for this management context)

Explanation: Bray P1 uses a dilute acid (0.025 M HCl) with ammonium fluoride and works well for acidic to neutral soils (pH below ~7.2). In calcareous soils, the acid is neutralized by free carbonates and underestimates available P. Olsen (NaHCO3) is the preferred method for calcareous soils.

6What is the approximate N content (by weight) of urea fertilizer (46-0-0)?

A.34% (incorrect for this management context)

B.46%

C.28% (incorrect for this management context)

D.21% (incorrect for this management context)

Explanation: Urea (CO(NH2)2) contains 46% nitrogen by weight and is the highest-analysis solid N fertilizer commonly used. The '46-0-0' grade explicitly states 46% N, 0% P2O5, 0% K2O.

7The law of the minimum, articulated by Justus von Liebig, states that:

A.Yield limited by the scarcest essential nutrient

B.Nutrient uptake is proportional to concentration in solution

C.Adding more of a sufficient nutrient will still increase yield

D.All nutrients must be balanced in equal ratios

Explanation: Liebig's Law of the Minimum states that crop yield is limited by the most deficient essential nutrient, regardless of how much of the other nutrients are available. Increasing the supply of other nutrients will not raise yield until the limiting nutrient is addressed. This is the foundation of balanced fertilization programs.

8Which micronutrient deficiency is most commonly associated with high-pH (alkaline) soils?

A.Boron (incorrect for this management context)

B.Iron

C.Molybdenum (incorrect for this management context)

D.Chloride (incorrect for this management context)

Explanation: Iron (Fe) availability decreases sharply as soil pH rises above 7.0 because Fe precipitates as insoluble oxides and hydroxides. Iron chlorosis (interveinal yellowing on young leaves) is a classic symptom in soybeans, sorghum, and ornamentals grown on calcareous soils. Chelated Fe (Fe-EDDHA) is the most effective remediation.

9What is the primary reason for banding phosphorus fertilizer rather than broadcasting in cool, wet soils?

A.Banding reduces ammonia volatilization (a urea/N concern, not P)

B.Concentrated band reduces fixation; improves early P uptake

C.Banding increases P leaching to tile drainage lines

D.Banding allows P to move deeper with irrigation water

Explanation: Phosphorus reacts rapidly with Ca, Fe, and Al in the soil to form less-available compounds (fixation). Banding concentrates P in a localized zone, saturating the fixation sites and leaving more P available to young roots. This is especially important in cool, wet springs when root uptake and P mineralization are slow.

10Which tissue test result indicates potassium deficiency in corn at V6?

A.K below 1.88% in whole plant at V5-V6

B.K below 2.0% in the ear leaf (incorrect for this management context)

C.K below 0.5% in any leaf (incorrect for this management context)

D.K above 3.0% in the whole plant

Explanation: At V5-V6, sample the whole plant above ground (~8-12 inches). Pioneer research gives a critical K range of 1.88-2.53% for young plants; Penn State lists sufficiency at 2.50-4.00%. K below ~1.88% indicates deficiency. At silking (R1), sample the ear leaf (sufficiency 1.70-2.50%).

About the CCA Exam

The International Certified Crop Adviser exam covers four agronomic competency areas: Nutrient Management, Soil and Water Management, Pest Management, and Crop Management. In the U.S./Canadian Local Board pathway, candidates also pass the applicable Local Board exam; applicants outside the United States, Canada, and Mexico use a separate ICCA preapproval route.

Questions

150 scored questions

Time Limit

2 hours 30 minutes

Passing Score

No universal public percentage; pass/fail cut scores are set using the Modified Angoff process

Exam Fee

Varies by applicable route or Local Board; confirm current registration information (American Society of Agronomy (ASA))

CCA Exam Content Outline

Not published

Nutrient Management

Soil fertility principles, NPK cycling, secondary/micronutrients, soil and tissue testing, fertilizer materials, 4R stewardship

Not published

Soil and Water Management

Soil physical and chemical properties, water movement, erosion control (RUSLE), irrigation, drainage, salinity and sodicity

Not published

Integrated Pest Management

Weed/insect/disease identification, economic thresholds, cultural/biological/chemical control, HRAC/IRAC/FRAC modes of action

Not published

Crop Management

Crop growth staging, tillage, rotations, cover crops, variety selection, planting/harvest, precision agriculture

How to Pass the CCA Exam

What You Need to Know

Passing score: No universal public percentage; pass/fail cut scores are set using the Modified Angoff process
Exam length: 150 questions
Time limit: 2 hours 30 minutes
Exam fee: Varies by applicable route or Local Board; confirm current registration information

Keys to Passing

Work through all 125 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

CCA Study Tips from Top Performers

1Master the 4R framework and nutrient cycling, while keeping study time balanced because ICCA does not publish section weights

2Memorize HRAC (herbicide), IRAC (insecticide), and FRAC (fungicide) mode-of-action groups for resistance management questions in IPM

3Learn corn V/R stages, soybean V/R stages, and wheat Feekes/Zadoks scales cold — crop staging questions appear in Crop Management

4Practice CEC, base saturation, and soil test interpretation calculations until they are second nature

5Use our AI tutor on every wrong answer — understanding WHY matters more than memorizing the right option

Frequently Asked Questions

What is the CCA exam pass rate?

The ICCA Program does not publish an official overall or first-time pass rate. Do not treat third-party percentage estimates as program statistics. Certification requirements also depend on the applicant's Local Board or separate international route.

How many questions are on the International CCA exam?

The full International CCA exam contains 150 questions drawn from the published Performance Objectives and allows 2 hours 30 minutes. ICCA publishes four competency areas but does not publish their weights or section-level item counts. Delivery mode depends on the current route and exam window.

What is the passing score for the CCA exam?

ICCA reports pass or fail and establishes cut scores through a Modified Angoff standard-setting process; it does not publish a universal 70% rule. Where section testing applies, each section is judged against its established standard and all sections must be passed within five years of the first passed section.

What are the prerequisites to become a CCA?

For the U.S./Canadian Local Board pathway, standard options are a qualifying agriculture-related bachelor's degree plus 2 years of crop-advising experience, a qualifying associate degree plus 3 years, or 4 years without a qualifying degree. Applicants document experience, references, and ethics compliance and pass the applicable exams. The separate international route requires ICCA committee preapproval.

How long should I study for the CCA exam?

ICCA does not prescribe study hours. An 80-120 hour plan over 8-16 weeks is a preparation estimate, not a program requirement; adjust it after diagnosing your knowledge across all four published competency areas.

What is the career outlook for CCAs?

BLS reports the median annual wage for agricultural and food scientists was $78,770 in May 2024, with the top 10% earning more than $140,080. Employment is projected to grow 6% from 2024-2034, faster than the average. CCAs work as independent consultants, retail agronomists, precision-ag specialists, and technical representatives for input manufacturers. Many earn commission or bonus on top of base salary.

Can I take the CCA exam one section at a time?

Where section testing is offered, the four areas may be taken separately, with a one-hour appointment per section and five years from the first passed section to complete all four. The ICCA section-testing notice excludes the separate international route outside the United States, Canada, and Mexico, as well as Mexico CCA, Brazil CPAE, and specialty exams.

How do I maintain CCA certification?

The 2026 Policy Manual requires 40 CEUs every two years, including at least 5 in each core competency area, at least 20 Board-approved CEUs, and at least 1 professional-ethics CEU, plus the annual renewal requirements. The separate international route says at least 20 of its 40 CEUs must come through the program's online classroom.