CHT Soil Science & Fertilization

Question 1

What soil pH range is generally considered optimal for most horticultural crops?

Accepted Answer

5.5–7.0

Answer

4.0–5.0

Answer

7.5–8.5

Answer

8.5–9.5

Question 2

Which macronutrient is primarily responsible for promoting leafy, vegetative growth?

Accepted Answer

Nitrogen (N)

Answer

Phosphorus (P)

Answer

Potassium (K)

Answer

Calcium (Ca)

Question 3

A soil test result shows a CEC of 25 meq/100g. What does this indicate?

Accepted Answer

High clay or organic matter content

Answer

Very low nutrient-holding capacity

Answer

Highly acidic soil

Answer

Excessive drainage

Question 4

Which fertilizer analysis number represents phosphorus content?

Accepted Answer

Second number

Answer

First number

Answer

Third number

Answer

Fourth number

Question 5

Slow-release fertilizers are preferred in professional horticulture primarily because they:

Accepted Answer

Reduce leaching and provide sustained nutrition

Answer

Are cheaper per application

Answer

Work only in acidic soils

Answer

Eliminate the need for irrigation

Question 6

Which soil texture allows the best balance of drainage and water retention?

Accepted Answer

Loam

Answer

Clay

Answer

Sand

Answer

Silt