Irrigation Test Study Guide chapters 1-
4 Questions with Verified Answers
Sandy soils - ANSWERS0.083
Loamy soils - ANSWERS0.125
Clayey Soils - ANSWERS0.167
Irrigation for Clay - ANSWERSClay requires half as much watering as sandy soils
Goal of Irrigation - ANSWERSTo no let plants die and to maintain a balance. Plants
must be taken down to the wilting point as much a they can and then be watered.
Keys to schedule for optimum - ANSWERSKnowing soil type, knowing plant type,
High Pressure is a problem because: - ANSWERSReduced radius of coverage
Floating fine mist
Dry areas between head patterns
Fast rotor rotation speed
Rotor rotation failure
Leakage at the head
Low Pressure is a problem because: - ANSWERSReduced radius of coverage
Large water droplets
Doughnut shaped dry area
Slow rotor rotation speed
Rotor rotation failure
Head failure to set and seal
Spray heads - ANSWERSUsed for small/ medium or irregular shaped lawns
Rotor heads - ANSWERSUsed for larger areas and sloping gardens
Does sprinkler head spacing affect irrigation system uniformity? - ANSWERSYes
What is an acceptable efficiency level for a pop-up spray head system? - ANSWERS60-
80%
Can soil moisture sensors improve irrigation system uniformity? - ANSWERSNo, they
relay information to automatic irrigation controllers
4 Questions with Verified Answers
Sandy soils - ANSWERS0.083
Loamy soils - ANSWERS0.125
Clayey Soils - ANSWERS0.167
Irrigation for Clay - ANSWERSClay requires half as much watering as sandy soils
Goal of Irrigation - ANSWERSTo no let plants die and to maintain a balance. Plants
must be taken down to the wilting point as much a they can and then be watered.
Keys to schedule for optimum - ANSWERSKnowing soil type, knowing plant type,
High Pressure is a problem because: - ANSWERSReduced radius of coverage
Floating fine mist
Dry areas between head patterns
Fast rotor rotation speed
Rotor rotation failure
Leakage at the head
Low Pressure is a problem because: - ANSWERSReduced radius of coverage
Large water droplets
Doughnut shaped dry area
Slow rotor rotation speed
Rotor rotation failure
Head failure to set and seal
Spray heads - ANSWERSUsed for small/ medium or irregular shaped lawns
Rotor heads - ANSWERSUsed for larger areas and sloping gardens
Does sprinkler head spacing affect irrigation system uniformity? - ANSWERSYes
What is an acceptable efficiency level for a pop-up spray head system? - ANSWERS60-
80%
Can soil moisture sensors improve irrigation system uniformity? - ANSWERSNo, they
relay information to automatic irrigation controllers
