Table 2.
Effect of hot water on mortality percentage of three nematode species (Aphelenchoides besseyi, Pratylenchus penetrans, and Meloidogyne hapla; n = 20) 24 hr post heat treatment at 40, 44, 48, and 52°C for 1, 5, 10, 30, 60, 120, and 240 min.
| Factor | Treatment level | 40°C | 44°C | 48°C | 52°C |
|---|---|---|---|---|---|
| Nematode (N) | A. besseyi | 45.4a | 68.9b | 99.5ab | 100.0a |
| P. penetrans | 23.5c | 62.4c | 98.8b | 99.9a | |
| M. hapla | 31.1b | 86.9a | 100.0a | 100.0a | |
| Exposure time (T) | 1 min | 1.7e | 4.7d | 96.7b | 99.7a |
| 5 min | 4.2e | 40.6c | 99.4a | 100.0a | |
| 10 min | 6.1de | 75.3b | 100.0a | 100.0a | |
| 30 min | 17.8cd | 89.7a | 100.0a | 100.0a | |
| 60 min | 28.9c | 98.9a | 100.0a | 100.0a | |
| 120 min | 79.4b | 100.0a | 100.0a | 100.0a | |
| 240 min | 95.0a | 100.0a | 100.0a | 100.0a | |
| P value | N | < 0.0001 | < 0.0001 | 0.0007 | 0.3714 |
| T | < 0.0001 | < 0.0001 | < 0.0001 | 0.4294 | |
| N × T | < 0.0001 | < 0.0001 | < 0.0001 | 0.4543 |
Notes: Data were combined over two experiments and are means of six replications. Data were analyzed with ANOVA and Tukey’s HSD (P ≤ 0.05). Within columns, means followed by a common letter are not significantly different.