CH Irrigation and Water Management 2

Question 1

Irrigation run times should generally be split into shorter 'cycle and soak' cycles for slopes and clay soils to:

Accepted Answer

Allow water to infiltrate before runoff occurs

Answer

Increase water penetration speed

Answer

Reduce pump wear

Answer

Prevent head pop-up failures

Question 2

Which factor most directly affects irrigation precipitation rate (how fast water is applied)?

Accepted Answer

Nozzle flow rate and spacing

Answer

Pipe material

Answer

Controller brand

Answer

Soil organic matter content

Question 3

A smart irrigation controller adjusts run times automatically based on:

Accepted Answer

Local weather data such as temperature, wind, and ET

Answer

Manual input from the homeowner daily

Answer

The age of the irrigation system

Answer

Number of plants in each zone

Question 4

Over-irrigation of landscape plants most commonly leads to which root problem?

Accepted Answer

Anaerobic conditions promoting root rot pathogens

Answer

Nutrient toxicity

Answer

Salt burn

Answer

Excessive root hair growth

Question 5

What is the primary advantage of using reclaimed (recycled) water for landscape irrigation in the US?

Accepted Answer

Conservation of potable drinking water supplies

Answer

Higher pathogen load benefits soil biology

Answer

Eliminates need for fertilization

Answer

Provides higher water pressure

Question 6

Hydraulic zoning in irrigation design groups plants together based on:

Accepted Answer

Similar water requirements (hydrozones)

Answer

Plant color and texture

Answer

Root depth only

Answer

Bloom season