Table 2.
Effect of Btk spray concentration and period of exposure on DBM larval mortality.
| PERIOD AFTER APPLICATION (HOURS) | CONTROL | 2 g/L | 4 g/L | 6 g/L | 8 g/L | 10 g/L | OVERALL PERIOD AVERAGES |
|---|---|---|---|---|---|---|---|
| 24 | 0.0j* | 13.3ij | 18.4hij | 23.3ghij | 25.8ghij | 26.7fghij | 17.9f** |
| 48 | 0.0j | 23.3ghij | 26.7fghij | 48.3defgh | 50.0defg | 56.8cdef | 34.2e |
| 72 | 2.2j | 40.0efghij | 51.7cdefg | 60.7bcde | 65.1abcde | 68.9abcde | 48.1d |
| 96 | 12.2ij | 60.0cde | 63.4abcde | 67.5abcde | 69.2abcde | 74.7abcd | 57.8c |
| 120 | 16.7ij | 65.6abcde | 70.3abcde | 76.7abcd | 80.8abc | 91.7a | 66.9b |
| 144 | 26.7fghij | 66.7abcde | 90.8ab | 92.3a | 93.0a | 93.3a | 77.1a |
| Overall treatment averages | 9.6d*** | 44.8c | 53.6bc | 61.5ab | 63.9a | 68.7a | 50.4 |
Notes:
*
Interaction averages in the body of the table followed by the same letters are not significantly different (Tukey’s Honestly significant difference test (P < 0.05).
**
Averages in the column followed by the same letters are not significantly different (Tukey’s Honestly significant difference test (P < 0.05).
***
Averages in the row followed by the same letter are not significantly different (Tukey’s Honestly significant difference test (P < 0.05).