CCA - Certified Crop Advisor Soil Fertility and Analysis Questions and Answers

Question 1

A soil test report for a field with a history of corn production indicates a Cation Exchange Capacity (CEC) of 8 meq/100g.
Which of the following management strategies is most appropriate for this field?

Accepted Answer

Utilizing split applications of nitrogen and potassium fertilizers.

Answer

Applying higher rates of nitrogen fertilizer less frequently.

Answer

Incorporating large amounts of sand to improve drainage.

Answer

Liming to significantly increase the soil pH above 7.5.

Question 2

A farmer observes interveinal chlorosis on the newest, upper leaves of his soybean plants. The field has a soil pH of 7.8. Which nutrient deficiency is the most likely cause of these symptoms?

Accepted Answer

Iron (Fe)

Answer

Nitrogen (N)

Answer

Potassium (K)

Answer

Magnesium (Mg)

Question 3

Which of the following soil sampling strategies is best suited for a large, non-uniform field with significant variations in soil type, topography, and past yield, where the producer has variable-rate application technology?

Accepted Answer

Grid sampling.

Answer

Composite sampling using a random zigzag pattern across the entire field.

Answer

Sampling only the historically high-yielding areas.

Answer

Taking a single composite sample from the center of the field.

Question 4

A routine soil analysis report indicates a soil pH of 5.2. At this pH, which essential macronutrient's availability is most likely to be significantly limited?

Accepted Answer

Phosphorus (P)

Answer

Iron (Fe)

Answer

Manganese (Mn)

Answer

Zinc (Zn)

Question 5

When interpreting a soil test report, what does the 'Buffer pH' value primarily help determine?

Accepted Answer

The amount of lime required to raise the soil pH to a desired level.

Answer

The amount of readily available nitrogen in the soil.

Answer

The soil's Cation Exchange Capacity (CEC).

Answer

The potential for phosphorus runoff from the field.

Question 6

Which of the following is considered a primary macronutrient essential for corn growth and is required in quantities similar to nitrogen?

Accepted Answer

Potassium (K)

Answer

Sulfur (S)

Answer

Calcium (Ca)

Answer

Zinc (Zn)

A soil test report for a field with a history of corn production indicates a Cation Exchange Capacity (CEC) of 8 meq/100g.Which of the following management strategies is most appropriate for this field?

A soil test report for a field with a history of corn production indicates a Cation Exchange Capacity (CEC) of 8 meq/100g.
Which of the following management strategies is most appropriate for this field?