BRAE 340 Midterm 2 correctly answered
A+ rated to pass
Surface irrigation types - correct answer ✔✔furrows, border strip, level basin
Surface Irrigation Infiltration - correct answer ✔✔infiltration rate decreases with opportunity
time
infiltration rate changes during season
Surface Irrigation Difficulties - correct answer ✔✔-difficult to apply small amounts uniformly
-treat as fixed amount
Surface Irrigation Affecting IE and DU - correct answer ✔✔-good timing=good DU
-soil variability
-opportunity times
-watering time
-flow rate
-uniform slopes
Surface Irrigation Management Keys - correct answer ✔✔-quick advance (furrows AR <0.5,
others OT > 0.5)
-short runs
-torpedos
-high flow rates
-tail water return
, -surge flow
-land grading
-comapction
Sprinkler Irrigation Types - correct answer ✔✔fixed grid (hand move, side rolls, wheel lines,
solid set)
moving systems (center pivot, linear move, big gun)
Sprinkler Advantages - correct answer ✔✔1. Irrigation scheduling is relatively simple
2. Management emphasis maintenance and scheduling
3. Labor requirements with some of the sprinkler systems is small
Sprinkler Irrigation Difficulties - correct answer ✔✔-application rate must be below soil
infiltration rate to avoid runoff
-different flow rates at each sprinkler
-edges
-labor intensive
Sprinkler Irrigation Affecting IE and DU - correct answer ✔✔good timing = good DU
-adequate spacing
-wind (major with traveling gun)
-pressure variations (pipe sizing, pressure regulators, flow control major for hand move, side
roll, solid set)
Sprinkler Irrigation Management Keys - correct answer ✔✔-application rate less than infiltration
rate
-proper timing
A+ rated to pass
Surface irrigation types - correct answer ✔✔furrows, border strip, level basin
Surface Irrigation Infiltration - correct answer ✔✔infiltration rate decreases with opportunity
time
infiltration rate changes during season
Surface Irrigation Difficulties - correct answer ✔✔-difficult to apply small amounts uniformly
-treat as fixed amount
Surface Irrigation Affecting IE and DU - correct answer ✔✔-good timing=good DU
-soil variability
-opportunity times
-watering time
-flow rate
-uniform slopes
Surface Irrigation Management Keys - correct answer ✔✔-quick advance (furrows AR <0.5,
others OT > 0.5)
-short runs
-torpedos
-high flow rates
-tail water return
, -surge flow
-land grading
-comapction
Sprinkler Irrigation Types - correct answer ✔✔fixed grid (hand move, side rolls, wheel lines,
solid set)
moving systems (center pivot, linear move, big gun)
Sprinkler Advantages - correct answer ✔✔1. Irrigation scheduling is relatively simple
2. Management emphasis maintenance and scheduling
3. Labor requirements with some of the sprinkler systems is small
Sprinkler Irrigation Difficulties - correct answer ✔✔-application rate must be below soil
infiltration rate to avoid runoff
-different flow rates at each sprinkler
-edges
-labor intensive
Sprinkler Irrigation Affecting IE and DU - correct answer ✔✔good timing = good DU
-adequate spacing
-wind (major with traveling gun)
-pressure variations (pipe sizing, pressure regulators, flow control major for hand move, side
roll, solid set)
Sprinkler Irrigation Management Keys - correct answer ✔✔-application rate less than infiltration
rate
-proper timing
