Soil and Water Conservation 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 Soil and Water Conservation Engineering flashcards as text
Which structure is used to measure flow rate in open channels on farms?
Answer: Weir or flume
Weirs and flumes measure open-channel flow by creating a controlled section where depth–discharge relationships are known.
Tile drainage systems are installed to:
Answer: Remove excess water from the root zone
Subsurface tile drains lower the water table to improve soil aeration and workability for crops.
The term 'wilting point' in soil-water management is the moisture level at which:
Answer: Plants can no longer extract water and wilt permanently
The permanent wilting point is the soil moisture content below which plants cannot recover turgor pressure.
Wind erosion is most severe in soils that are:
Answer: Dry, loose, fine-textured, and exposed
Dry, fine, loose soils without vegetation cover are most susceptible to wind erosion.
A diversion terrace differs from a retention terrace in that it:
Answer: Channels runoff away to a stable outlet
Diversion terraces safely redirect runoff to a vegetated outlet rather than impounding it.
In irrigation scheduling, 'allowable depletion' refers to:
Answer: The fraction of plant-available water that can be used before irrigation is needed
Allowable depletion sets the threshold of soil moisture extraction before irrigating to avoid crop stress.