CHT Irrigation & Water Management

Question 1

What is the primary advantage of drip irrigation over overhead sprinklers?

Accepted Answer

Delivers water directly to root zone with less evaporation

Answer

Lower installation cost

Answer

Covers larger areas faster

Answer

Requires no filtration

Question 2

Evapotranspiration (ET) data is used in irrigation scheduling to:

Accepted Answer

Estimate how much water plants use and need to replace

Answer

Identify plant diseases

Answer

Determine fertilizer rates

Answer

Calculate soil pH

Question 3

Which type of sprinkler head is best suited for large turf areas?

Accepted Answer

Rotary/rotor head

Answer

Fixed spray head

Answer

Drip emitter

Answer

Misting nozzle

Question 4

Backflow prevention devices are required in irrigation systems to:

Accepted Answer

Prevent contaminated water from entering the potable supply

Answer

Increase water pressure

Answer

Reduce clogging in drip lines

Answer

Filter sediment from sprinkler heads

Question 5

What is 'hydraulic zoning' in irrigation design?

Accepted Answer

Dividing areas by plant water need and pressure requirements

Answer

Installing water meters per zone

Answer

Using one zone for the entire property

Answer

Grouping zones by plant color

Question 6

The term 'distribution uniformity' (DU) measures:

Accepted Answer

How evenly water is applied across an irrigated area

Answer

Fertilizer spread pattern

Answer

Soil compaction level

Answer

Root growth uniformity