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
What does ET stand for in irrigation scheduling?
Answer: Evapotranspiration
ET stands for evapotranspiration, the combined water loss from soil evaporation and plant transpiration.
Which controller type uses local weather data to automatically adjust irrigation run times?
Answer: ET-based (SMART) controller
ET-based SMART controllers use real-time weather data to calculate evapotranspiration and automatically adjust schedules.
What is a 'water budget' in irrigation controller programming?
Answer: A seasonal percentage adjustment to run times based on ET
A water budget is a percentage adjustment applied to controller run times to match seasonal evapotranspiration needs.
What is 'cycle and soak' programming designed to prevent?
Answer: Runoff on slopes or clay soils with slow infiltration
Cycle and soak applies multiple short irrigation cycles with rest periods to prevent runoff where soil infiltration is slow.
Which metric measures how uniformly an irrigation system applies water across a zone?
Answer: Distribution uniformity (DU)
Distribution uniformity (DU) measures how evenly water is applied across an irrigation zone, calculated from catch-can data.
What is the purpose of a rain sensor on an irrigation system?
Answer: Automatically suspend irrigation during or after rain
A rain sensor automatically overrides and suspends scheduled irrigation during or after sufficient rainfall to prevent overwatering.