Texas Chemigation Pest Control Exam Review
with Answers and Rationales | 100% Pass
Guaranteed | Graded A+
1. Chemigation is defined as:
A. Applying pesticides by aircraft
B. Applying pesticides through irrigation water
C. Mixing pesticides in soil before planting
D. Applying pesticides with handheld sprayers
Answer: B
Chemigation specifically refers to pesticide application through
irrigation systems.
2. The primary purpose of a backflow prevention device is to:
A. Increase water pressure
B. Improve pesticide mixing
C. Prevent contamination of the water source
D. Reduce pesticide use
Backflow devices protect groundwater and public water supplies
from pesticide contamination.
3. Which irrigation system is commonly used for chemigation?
A. Flood irrigation only
B. Hand watering systems
C. Center pivot systems
D. Drip bottles
Center pivot and lateral move systems are widely used for
chemigation.
,4. A reduced pressure principle (RP) assembly is used to:
A. Increase pesticide flow
B. Prevent back-siphoning and backpressure
C. Filter pesticides
D. Regulate droplet size
RP assemblies provide high-level protection against contamination.
5. When must a chemigation system be shut down immediately?
A. When wind speed is low
B. If the injection pump stops working
C. When pressure increases slightly
D. At the end of irrigation
Loss of injection control can result in uneven or excessive pesticide
application.
6. The function of a check valve is to:
A. Measure pesticide flow
B. Prevent reverse flow of water or pesticide
C. Increase system pressure
D. Filter debris
Check valves stop contaminated water from flowing backward into
the source.
7. Which document provides legal instructions for chemigation?
A. Equipment manual
B. Irrigation schedule
C. Pesticide label
D. Weather report
The pesticide label is the law and includes chemigation requirements.
, 8. Air gaps are used to:
A. Increase mixing speed
B. Provide physical separation to prevent backflow
C. Measure tank volume
D. Reduce evaporation
An air gap is one of the safest backflow prevention methods.
9. Which is a common chemigation hazard?
A. Soil compaction
B. Water source contamination
C. Plant overgrowth
D. Equipment overheating
Improper systems can contaminate wells, streams, or public water.
10. Calibration ensures:
A. Faster irrigation
B. Correct pesticide application rate
C. Lower water pressure
D. Less equipment wear
Calibration prevents under- or over-application.
11. Which component stops pesticide injection if water flow stops?
A. Pressure gauge
B. Interlock system
C. Agitator
D. Filter
Interlocks automatically shut down injection when water flow ceases.
with Answers and Rationales | 100% Pass
Guaranteed | Graded A+
1. Chemigation is defined as:
A. Applying pesticides by aircraft
B. Applying pesticides through irrigation water
C. Mixing pesticides in soil before planting
D. Applying pesticides with handheld sprayers
Answer: B
Chemigation specifically refers to pesticide application through
irrigation systems.
2. The primary purpose of a backflow prevention device is to:
A. Increase water pressure
B. Improve pesticide mixing
C. Prevent contamination of the water source
D. Reduce pesticide use
Backflow devices protect groundwater and public water supplies
from pesticide contamination.
3. Which irrigation system is commonly used for chemigation?
A. Flood irrigation only
B. Hand watering systems
C. Center pivot systems
D. Drip bottles
Center pivot and lateral move systems are widely used for
chemigation.
,4. A reduced pressure principle (RP) assembly is used to:
A. Increase pesticide flow
B. Prevent back-siphoning and backpressure
C. Filter pesticides
D. Regulate droplet size
RP assemblies provide high-level protection against contamination.
5. When must a chemigation system be shut down immediately?
A. When wind speed is low
B. If the injection pump stops working
C. When pressure increases slightly
D. At the end of irrigation
Loss of injection control can result in uneven or excessive pesticide
application.
6. The function of a check valve is to:
A. Measure pesticide flow
B. Prevent reverse flow of water or pesticide
C. Increase system pressure
D. Filter debris
Check valves stop contaminated water from flowing backward into
the source.
7. Which document provides legal instructions for chemigation?
A. Equipment manual
B. Irrigation schedule
C. Pesticide label
D. Weather report
The pesticide label is the law and includes chemigation requirements.
, 8. Air gaps are used to:
A. Increase mixing speed
B. Provide physical separation to prevent backflow
C. Measure tank volume
D. Reduce evaporation
An air gap is one of the safest backflow prevention methods.
9. Which is a common chemigation hazard?
A. Soil compaction
B. Water source contamination
C. Plant overgrowth
D. Equipment overheating
Improper systems can contaminate wells, streams, or public water.
10. Calibration ensures:
A. Faster irrigation
B. Correct pesticide application rate
C. Lower water pressure
D. Less equipment wear
Calibration prevents under- or over-application.
11. Which component stops pesticide injection if water flow stops?
A. Pressure gauge
B. Interlock system
C. Agitator
D. Filter
Interlocks automatically shut down injection when water flow ceases.
