FREE CPH Soil Science and Fertility Questions and Answers

Question 1

What is the ideal pH range for most plants to grow?

Accepted Answer

5.5–7.0

Answer

3.5–4.5

Answer

7.5–9.0

Answer

9.5–11.0

Question 2

Which soil type has the best water-holding capacity?

Accepted Answer

Loam

Answer

Sand

Answer

Clay

Answer

Silt

Question 3

What is the primary function of organic matter in soil?

Accepted Answer

Improving soil structure and fertility

Answer

Increasing pH

Answer

Providing nitrogen

Answer

Preventing soil erosion

Question 4

Which macronutrient is primarily responsible for promoting root growth in plants?

Accepted Answer

Phosphorus

Answer

Nitrogen

Answer

Potassium

Answer

Calcium

Question 5

What term describes soil's ability to hold and exchange nutrients?

Accepted Answer

Cation Exchange Capacity (CEC)

Answer

Soil Porosity

Answer

Soil Texture

Answer

Bulk Density