Question:
Which one of the following is a physical method of nematode control?
Which one of the following is a physical method of nematode control?
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Nematode control methods:
- Physical: Heat, irradiation, osmotic pressure.
- Chemical: Nematicides.
- Biological: Predators, parasites.
- Cultural: Crop rotation, sanitation.
- Physical: Heat, irradiation, osmotic pressure.
- Chemical: Nematicides.
- Biological: Predators, parasites.
- Cultural: Crop rotation, sanitation.
Updated On: Aug 27, 2026
- Heat only
- Irradiation only
- Osmotic pressure only
- All the above
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of physical methods for nematode control.
Step 2: Detailed Explanation:
Physical methods of nematode control include:
- Heat: Soil solarization, steam sterilization, hot water treatment.
- Irradiation: Gamma rays, UV radiation to kill nematodes.
- Osmotic pressure: High salt concentrations can kill nematodes.
All three are physical methods.
Thus, all the above options are correct.
Step 3: Final Answer:
Thus, all the above are physical methods of nematode control, which corresponds to option (D).
[0.5cm]
This question tests knowledge of physical methods for nematode control.
Step 2: Detailed Explanation:
Physical methods of nematode control include:
- Heat: Soil solarization, steam sterilization, hot water treatment.
- Irradiation: Gamma rays, UV radiation to kill nematodes.
- Osmotic pressure: High salt concentrations can kill nematodes.
All three are physical methods.
Thus, all the above options are correct.
Step 3: Final Answer:
Thus, all the above are physical methods of nematode control, which corresponds to option (D).
[0.5cm]
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