CERTIFIED CROP ADVISOR EXAM SCRIPT
2026 COMPLETE QUESTIONS AND
CORRECT ANSWERS
◉ How does fixation/saturation affect the fate of P in soil?.
Answer: Phosphorus can become fixed and less available for plant
uptake.
◉ How does pH affect the fate of P in soil?.
Answer: pH affects phosphorus availability and solubility in soil.
◉ What is mineralization?.
Answer: Conversion of organic phosphorus into inorganic forms.
◉ How does soil erosion affect the fate of P in soil?.
Answer: Erosion can lead to loss of phosphorus from the soil.
◉ How does soluble P transport affect the fate of P in soil?.
Answer: Soluble phosphorus can be lost through leaching or runoff.
◉ How can a yield map be used to develop a soil sampling plan?.
,Answer: Identify areas of high and low yield for targeted sampling.
◉ How can a soil survey map be used to develop a soil sampling
plan?.
Answer: Identify soil types and their distribution for targeted
sampling.
◉ How can aerial imagery be used to develop a soil sampling plan?.
Answer: Identify areas of variability in vegetation for targeted
sampling.
◉ How can landscape position be used to develop a soil sampling
plan?.
Answer: Consider topography and drainage patterns for targeted
sampling.
◉ How can land use history be used to develop a soil sampling plan?.
Answer: Consider past management practices for targeted sampling.
◉ What are the differences between grid, zone, and whole field
sampling approaches?.
Answer: Grid: systematic sampling across the field. Zone: sampling
based on field variability. Whole field: single composite sample.
, ◉ How can soil analysis be used for problem solving/diagnosis?.
Answer: Identify nutrient deficiencies or imbalances.
◉ How can soil analysis be used for nutrient program monitoring?.
Answer: Evaluate the effectiveness of nutrient management
practices.
◉ How can soil analysis be used for in-season nutrient
management?.
Answer: Adjust nutrient applications based on current crop needs.
◉ How can soil analysis be used for pre-season nutrient planning?.
Answer: Determine nutrient requirements before planting.
◉ How does time of sampling affect soil test analysis?.
Answer: Seasonal variations in nutrient levels.
◉ How does depth of sampling affect soil test analysis?.
Answer: Different nutrient levels at different soil depths.
◉ How does extraction chemistry and detection method affect soil
test analysis?.
2026 COMPLETE QUESTIONS AND
CORRECT ANSWERS
◉ How does fixation/saturation affect the fate of P in soil?.
Answer: Phosphorus can become fixed and less available for plant
uptake.
◉ How does pH affect the fate of P in soil?.
Answer: pH affects phosphorus availability and solubility in soil.
◉ What is mineralization?.
Answer: Conversion of organic phosphorus into inorganic forms.
◉ How does soil erosion affect the fate of P in soil?.
Answer: Erosion can lead to loss of phosphorus from the soil.
◉ How does soluble P transport affect the fate of P in soil?.
Answer: Soluble phosphorus can be lost through leaching or runoff.
◉ How can a yield map be used to develop a soil sampling plan?.
,Answer: Identify areas of high and low yield for targeted sampling.
◉ How can a soil survey map be used to develop a soil sampling
plan?.
Answer: Identify soil types and their distribution for targeted
sampling.
◉ How can aerial imagery be used to develop a soil sampling plan?.
Answer: Identify areas of variability in vegetation for targeted
sampling.
◉ How can landscape position be used to develop a soil sampling
plan?.
Answer: Consider topography and drainage patterns for targeted
sampling.
◉ How can land use history be used to develop a soil sampling plan?.
Answer: Consider past management practices for targeted sampling.
◉ What are the differences between grid, zone, and whole field
sampling approaches?.
Answer: Grid: systematic sampling across the field. Zone: sampling
based on field variability. Whole field: single composite sample.
, ◉ How can soil analysis be used for problem solving/diagnosis?.
Answer: Identify nutrient deficiencies or imbalances.
◉ How can soil analysis be used for nutrient program monitoring?.
Answer: Evaluate the effectiveness of nutrient management
practices.
◉ How can soil analysis be used for in-season nutrient
management?.
Answer: Adjust nutrient applications based on current crop needs.
◉ How can soil analysis be used for pre-season nutrient planning?.
Answer: Determine nutrient requirements before planting.
◉ How does time of sampling affect soil test analysis?.
Answer: Seasonal variations in nutrient levels.
◉ How does depth of sampling affect soil test analysis?.
Answer: Different nutrient levels at different soil depths.
◉ How does extraction chemistry and detection method affect soil
test analysis?.
