CGM Sustainable Practices & Conservation 2

Question 1

Which irrigation scheduling method uses evapotranspiration (ET) data to determine watering frequency?

Accepted Answer

ET-based irrigation scheduling

Answer

ET-based irrigation scheduling uses actual evapotranspiration data to replace only the water lost by plants and soil, minimizing waste.

Question 2

What is the primary environmental benefit of using recycled water (reclaimed water) for landscape irrigation?

Accepted Answer

It reduces demand on freshwater supplies

Answer

Reclaimed water reduces demand on potable freshwater supplies, conserving a critical resource while still meeting irrigation needs.

Question 3

A grounds manager wants to reduce chemical inputs. Which integrated approach best combines biological, cultural, and chemical controls?

Accepted Answer

Integrated Pest Management (IPM)

Answer

IPM combines biological, cultural, mechanical, and chemical controls to manage pests with minimal environmental impact.

Question 4

Which practice best reduces stormwater runoff and improves groundwater recharge on turf areas?

Accepted Answer

Core aeration and topdressing

Answer

Core aeration reduces compaction and improves soil infiltration, allowing water to percolate into the ground rather than run off.

Question 5

What does a soil health assessment that measures biological activity (e.g., microbial biomass) help a grounds manager determine?

Accepted Answer

The soil's capacity to support plant life and cycle nutrients naturally

Answer

Measuring microbial biomass indicates the soil's biological health and its natural capacity to break down organic matter and supply nutrients.

(CGM) Certified Grounds Manager Practice Test