Water Conservation and Scheduling Flashcards
6 cards from real CIT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Water Conservation and Scheduling flashcards as text
If reference ET = 0.25 inches and the zone precipitation rate = 1.5 in/hr, what run time is needed?
Answer: 10 minutes
Run time = (ET ÷ precipitation rate) × 60 = (0.25 ÷ 1.5) × 60 = 10 minutes.
What does the crop coefficient (Kc) represent in irrigation scheduling?
Answer: The ratio of a specific plant's water use to reference ET (ETo)
The crop coefficient (Kc) is the ratio of a specific plant's actual ET to the reference ET, used to adjust irrigation amounts for different species.
Which EPA program labels water-efficient irrigation products and encourages conservation through utility rebates?
Answer: WaterSense
EPA's WaterSense program certifies water-efficient products and partners with utilities to offer rebates, promoting irrigation water conservation.
What is 'deficit irrigation'?
Answer: Intentionally applying less water than full crop ET to conserve water
Deficit irrigation intentionally applies less water than full ET requirements to conserve water, accepting minor plant stress or yield reduction.
A zone has high clay soil with a 0.3 in/hr infiltration rate and a precipitation rate of 1.2 in/hr. The best scheduling strategy is:
Answer: Cycle and soak with multiple short cycles
Cycle and soak is ideal for clay soils because it breaks irrigation into short bursts, allowing slow-infiltrating soil to absorb water between cycles.
What is the maximum allowable soil moisture depletion generally recommended before irrigating cool-season turfgrass?
Answer: 50% of plant-available water
Irrigating before soil moisture depletion exceeds 50% of plant-available water prevents turf stress while allowing efficient deep watering.