Table 2 Mortality (%) of last instar Phthorimaea operculella larvae caused by different infective juvenile concentrations of Heterorhabditis bacteriophora (Z-1)
Hours | Concentrations | F-test | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
250 | 500 | 1000 | Control | ||||||||
24 | 6.67 ± 3.33 | a* | A** | 23.33 ± 3.33 | a | B | 50.00 ± 5.77 | a | C | 0.00 ± 0.00 | F = 14.92, P = 0.00 |
48 | 30.00 ± 10.00 | ab | A | 53.33 ± 3.33 | b | B | 66.67 ± 3.33 | ab | B | 0.00 ± 0.00 | F = 8.26, P = 0.02 |
72 | 35.69 ± 6.19 | b | A | 60.70 ± 3.57 | b | B | 82.14 ± 7.14 | bc | C | 6.67 ± 3.33 | F = 14.24, P = 0.00 |
96 | 49.98 ± 7.14 | bc | A | 64.28 ± 3.57 | bc | AB | 82.14 ± 7.14 | bc | B | 6.67 ± 3.33 | F = 6.83, P = 0.03 |
120 | 53.56 ± 9.45 | bc | A | 64.28 ± 3.57 | bc | AB | 82.14 ± 7.14 | bc | B | 6.67 ± 3.33 | F = 4.41, P = 0.07 |
144 | 62.96 ± 9.80 | c | A | 74.08 ± 3.70 | c | AB | 92.59 ± 3.70 | c | B | 10.00 ± 5.77 | F = 5.70, P = 0.04 |
F-test | F = 7.28, P = 0.00 | F = 24.47, P = 0.00 | F = 5.3424, P = 0.01 | ||||||||