Title: Complete Test #2
Course: MC_AGRI1370_RWildhirt_NM06082017 > Section: Explain chemigation and fertigation for pivot applications

Q: A saturated underground formation that will yield usable amounts of water to a well or spring is called?
- Aquifer
- Anion
- Reservoir
- Water Source
A: Aquifer

Q: Cost of pivot system depends on.
- Pivot system length
- Type of power units
- Groundwater well construction
- All are correct
A: All are correct

Q: How do you measure soil composition?
- Lab tests
- Ribboning tests
- Taste tests
- Both lab tests & ribboning tests
A: Both lab tests & ribboning tests

Q: Incentives to use variable rate irrigation include?
- Nutrient/pest management improvement
- More flexibility/control of application amounts over varying soil types and topography.
- Both nutrient/pest management improvement & more flexibility/control of application amounts over varying soil types and topography
A: Both nutrient/pest management improvement & more flexibility/control of application amounts over varying soil types and topography

Q: No-till farming, maintaining crop residue, deep chiseling of clay sub-soils, cover crops and adding organic matter are examples of this?
- Runoff control
- Organic farming
- Fertigation
- Soil texturing
A: Runoff control

Q: The application of a commercial fertilizer, soil amendment, or reclaimed water from food processing and wastewater treatment facilities is called this.
- Chemigation
- Fertigation
- Irrigation
- Application
A: Fertigation

Q: The collection and testing of physical samples to help verify or calibrate data that has been collected remotely or automatically across the whole field is called?
- Ground Truthing
- Ground Testing
- Ground Sensing
- Ground Management
A: Ground Truthing

Q: These are all barriers to variable rate irrigation EXCEPT
- Economic investment
- Farmers reluctance
- Lack of information about such systems
- Reduction of water and energy use
A: Reduction of water and energy use

Q: These are all things purchasers of center pivots must take into consideration.
- Drive mechanisms
- Type of water applicators
- Number of towers
- All are correct
A: All are correct

Q: This types of water applicator drag socks or hoses that release water on the ground.
- LESA
- MEPA
- LEPA
- MESA
A: LEPA

Q: What are the correct steps in implementing VRI for a given field?
- Measure, Build, Schedule, Monitor
- Schedule, Build, Measure, Monitor
- Monitor, Schedule, Build, Measure
- Build, Monitor, Measure, Schedule
A: Measure, Build, Schedule, Monitor

Q: What does VRI stand for?
- Variable Rate Irrigation
- Variable Runoff Irrigation
- Variable Rounds Irrigation
- Variable Rate Implements
A: Variable Rate Irrigation

Q: What is a LESA water applicator?
- Low Energy Specific Application
- Low Elevation Spray Application
- Low Elevation Specific Application
- Low Energy Spray Application
A: Low Elevation Spray Application

Q: What is the correct way to chemigate?
- Chemigating with wind speeds over 10mph.
- Setting your endgun to spray on a maintained road
- Operating your system so that there is no runoff
- Operate your system so it sprays into an open water system.
A: Operating your system so that there is no runoff

Q: When properly designed, equipped and operated, what resources does the center pivot system conserve?
- Energy
- Money
- Water
- All are correct
A: All are correct

Q: Change in land elevation throughout a field will result in variation of pivot operation pressure?
- True
- False
A: True

Q: Chemigation is any process whereby chemicals are applied to land or crops in or with water through an on-farm irrigation distribution system.
- True
- False
A: True

Q: MESA, LESA, LEPA, Impact Sprinklers, and low-pressure applicators are all types of water applicators.
- True
- False
A: True

Q: Total cost of a pivot system depends on factors such as system length, coverage area, power units, types of water applicator, as well as water supply system costs.
- True
- False
A: True

Q: Variable rate sectors and variable rate zones are parts of variable rate irrigation?
- True
- False
A: True

Q: What are 5 advantages that can offset the relatively high cost of a center pivot system?

Q: What are 5 benefits to a producer that uses variable rate irrigation?