CPP Irrigation & Water Management Flashcards
6 cards from real CPP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CPP Irrigation & Water Management flashcards as text
Which irrigation method delivers water directly to the root zone and is most efficient for landscape plants in arid US regions?
Answer: Drip irrigation
Drip irrigation delivers water directly to the root zone, minimizing evaporation and runoff in arid climates.
What is the term for the amount of water lost from soil and plant surfaces combined, used to calculate irrigation scheduling?
Answer: Evapotranspiration (ET)
Evapotranspiration (ET) combines soil evaporation and plant transpiration and is the primary metric for irrigation scheduling.
A plant's water requirement is best described by which coefficient when adjusting reference ET for landscape use?
Answer: Crop coefficient (Kc)
The crop coefficient (Kc) adjusts reference ET to reflect the actual water needs of a specific plant species or landscape.
Which soil property most directly determines how quickly irrigation water infiltrates and moves through the profile?
Answer: Soil texture and structure
Soil texture and structure determine pore size distribution, which controls infiltration rate and water movement through the soil profile.
What does 'distribution uniformity' (DU) measure in an irrigation system evaluation?
Answer: Consistency of water application across the irrigated area
Distribution uniformity measures how evenly water is applied across the irrigated area, with higher DU indicating more consistent coverage.
Which backflow prevention device is required by most US codes when an irrigation system is connected to a potable water supply?
Answer: Pressure vacuum breaker (PVB) or reduced-pressure zone (RPZ) device
A pressure vacuum breaker (PVB) or reduced-pressure zone (RPZ) assembly is required to prevent irrigation water from contaminating the potable water supply.