Agronomy Basic 4

Question 1

What does the 'dormancy' period of a seed mean?

Accepted Answer

The seed is alive but will not germinate under current conditions

Answer

Seed dormancy is a survival mechanism where a viable seed will not germinate even under otherwise favorable conditions until specific requirements are met.

Question 2

In a standard NPK fertilizer labeled 10-20-10, what does the middle number represent?

Accepted Answer

Phosphorus (P₂O₅) percentage

Answer

The middle number in an NPK label represents the percentage of available phosphate (P₂O₅) in the fertilizer.

Question 3

Which type of irrigation delivers water directly to the root zone with minimal evaporation loss?

Accepted Answer

Drip irrigation

Answer

Drip irrigation delivers water slowly and directly to the root zone through emitters, greatly reducing evaporation and water waste.

Question 4

What is the term for plants that complete their life cycle in one growing season?

Accepted Answer

Annual

Answer

Annual plants germinate, grow, flower, set seed, and die all within a single growing season.

Question 5

Which soil horizon is typically referred to as the 'topsoil'?

Accepted Answer

A horizon

Answer

The A horizon is the topsoil layer, rich in organic matter and biological activity, and most important for crop production.

Agronomy Practice Test

Agronomy Practice Test

Agronomy Basic 4