Q104: Aphelenchoides bessey/ infected rice seeds can be treated using - Nematode Management - Nematology- ICAR JRF/SRF 2024 | Agrigyan

• Hot Water Treatment for White Tip Nematode (Aphelenchoides besseyi):
• Seed Sanitation in Rice: Aphelenchoides besseyi survives in anhydrobiotic dormancy beneath the hull (lemma and palea) of infested rice seeds.
• Temperature-Time Protocol: Soaking pre-conditioned paddy seeds in hot water at $50^\circ\text{C}$ to $52^\circ\text{C}$ for 10 minutes (or $52-53^\circ\text{C}$ for 15 min without prior soaking) achieves $100\%$ mortality of dormant nematodes without impairing seed germination percentage.
• Conclusion: Hot water at $50^\circ\text{C}$ for 10 min is the recommended treatment (Option 4).

Correct option: (4) Hot water at 50°C for 10 min