BRAE 340 exam 2 Questions with Complete
Solutions
Choose the best match between the limitations and the irrigation systems affected: Must be
picked up and trailered to the other end of the field Correct Answ_hand move
It is difficult to apply small application amounts with surface irrigation systems (T/F) Correct
Answ_true
Lower water and power costs help to offset higher costs for systems which an achieve high DUs
(T/F) Correct Answ_true
Center pivots, with their high application rates, are best suited to course textured soils (T/F)
Correct Answ_true
It is usually unsatisfactory to level severely undulating soils for surface irrigation (T/F)
Correct Answ_true
Double line hose Correct Answ_drip
,Contour furrow Correct Answ_surface
Certa-Set Correct Answ_fixed grid
LEPA Correct Answ_moving
In order to obtain good distribution uniformity from sloping furrows, what is required?
Correct Answ_runoff
It is easy to apply small application amounts with surface irrigation systems (T/F) Correct
Answ_false
Drip irrigation is always the best irrigation system to use (T/F) Correct Answ_false
A "torpedo" is a special drill for installing underground pipe (T/F) Correct Answ_false
Side roll Correct Answ_fixed grid
, Tape Correct Answ_drip
What are the basic causes of unwanted, non-beneficial deep percolation? Correct Answ_poor
DU and poor timing
What is required to get a good irrigation efficiency with a pressurized irrigation system?
Correct Answ_good DU and good timing
Subirrigation is not a type of irrigation system (T/F) Correct Answ_true
A "torpedo" is a weight pulled behind a tractor to compact furrows (T/F) Correct Answ_true
Distribution uniformity is a measure of what? Correct Answ_how evenly water is made
available to plants throughout a field
What needs to happen before any pressure measurements are taken? Correct Answ_turn off
the backflush
Solutions
Choose the best match between the limitations and the irrigation systems affected: Must be
picked up and trailered to the other end of the field Correct Answ_hand move
It is difficult to apply small application amounts with surface irrigation systems (T/F) Correct
Answ_true
Lower water and power costs help to offset higher costs for systems which an achieve high DUs
(T/F) Correct Answ_true
Center pivots, with their high application rates, are best suited to course textured soils (T/F)
Correct Answ_true
It is usually unsatisfactory to level severely undulating soils for surface irrigation (T/F)
Correct Answ_true
Double line hose Correct Answ_drip
,Contour furrow Correct Answ_surface
Certa-Set Correct Answ_fixed grid
LEPA Correct Answ_moving
In order to obtain good distribution uniformity from sloping furrows, what is required?
Correct Answ_runoff
It is easy to apply small application amounts with surface irrigation systems (T/F) Correct
Answ_false
Drip irrigation is always the best irrigation system to use (T/F) Correct Answ_false
A "torpedo" is a special drill for installing underground pipe (T/F) Correct Answ_false
Side roll Correct Answ_fixed grid
, Tape Correct Answ_drip
What are the basic causes of unwanted, non-beneficial deep percolation? Correct Answ_poor
DU and poor timing
What is required to get a good irrigation efficiency with a pressurized irrigation system?
Correct Answ_good DU and good timing
Subirrigation is not a type of irrigation system (T/F) Correct Answ_true
A "torpedo" is a weight pulled behind a tractor to compact furrows (T/F) Correct Answ_true
Distribution uniformity is a measure of what? Correct Answ_how evenly water is made
available to plants throughout a field
What needs to happen before any pressure measurements are taken? Correct Answ_turn off
the backflush
