Irrigation and Drainage Engineering Flashcards
6 cards from real Agricultural/Bioengineering practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Irrigation and Drainage Engineering flashcards as text
Which irrigation method delivers water directly to the root zone of individual plants through emitters?
Answer: Drip or trickle irrigation
Drip irrigation delivers water slowly and directly to the root zone via emitters, minimizing evaporation and runoff for high efficiency.
Irrigation efficiency is defined as the ratio of:
Answer: Water beneficially used by crops to water delivered to the field
Irrigation efficiency is the percentage of water delivered to a field that is actually used beneficially by crops, excluding losses to deep percolation and runoff.
The concept of 'consumptive use' or evapotranspiration (ET) refers to:
Answer: Total water used by plants through transpiration plus soil evaporation
Evapotranspiration (ET) is the combined water loss from plant transpiration and soil surface evaporation, representing the crop's consumptive water use.
Which drainage system uses perforated pipes buried below the soil surface to remove excess water?
Answer: Subsurface tile drainage
Subsurface tile drainage uses perforated plastic or clay pipes buried in the soil to collect and remove excess groundwater, lowering the water table.
In furrow irrigation, water is applied by:
Answer: Flowing through small channels between crop rows
Furrow irrigation delivers water through small parallel channels (furrows) cut between crop rows, allowing it to infiltrate laterally into the root zone.
Field capacity is defined as the soil water content after:
Answer: Rapid drainage following saturation has essentially ceased
Field capacity is the soil moisture level retained after excess water has drained away following saturation, typically 2-3 days after a heavy rain or irrigation.