C27 License Water Conservation and Drought-Tolerant Landscaping 2

Question 1

Which irrigation method provides the greatest water conservation in a drought-tolerant landscape?

Accepted Answer

Drip irrigation

Answer

Drip irrigation delivers water directly to the root zone with minimal evaporation or runoff, making it the most water-efficient delivery method.

Question 2

What is the purpose of a rain sensor or weather-based controller in an irrigation system?

Accepted Answer

To automatically shut off irrigation during or after rainfall

Answer

Rain sensors and weather-based controllers prevent irrigation from running during or after rainfall, reducing unnecessary water use.

Question 3

Which type of turf grass requires the least supplemental water in California landscapes?

Accepted Answer

Buffalo grass or Bermuda grass

Answer

Buffalo grass and Bermuda grass are warm-season grasses with deep root systems that require significantly less irrigation than cool-season varieties.

Question 4

What does 'water budget' mean in the context of California landscape water regulations?

Accepted Answer

The maximum annual water allowance for a landscape based on local ET data

Answer

A water budget is the Maximum Applied Water Allowance (MAWA) — the calculated annual water limit for a landscape based on local ET rates and total area.

Question 5

Which plants are most appropriate for drought-tolerant landscaping in California's climate?

Accepted Answer

Native and Mediterranean-climate plants

Answer

Native and Mediterranean-climate plants are adapted to California's dry summers and require minimal supplemental irrigation once established.

C27 License - C-27 Landscaping Contractor License Practice Test

C27 License - C-27 Landscaping Contractor License Practice Test

C27 License Water Conservation and Drought-Tolerant Landscaping 2