Table 3 The mortality rate (in %) of P. argentipes evaluated through cone bioassays on different wall surface types at 2, 4 and 12 weeks DDT- and SP-post-IRS in Lawapur Mahnar village, Vaishali district (Bihar)
Insecticide sprayed | Surface/data type | Time interval post-IRS | ||
|---|---|---|---|---|
2 weeks Mean (95% CI) | 4 weeks Mean (95% CI) | 12 weeks Mean (95% CI) | ||
DDT (WP 50%) at 1 g/m | Brick unplastered and unpainted (BUU) | 55 (50.0–60.0) | 35 (30.0–40.0) | 26.4 (22.2–33.3) |
Cement plastered and lime-coated (CPLC) | 58.3 (55.6–66.7) | 36.9 (30.0–44.4) | 28.9 (22.2–30.3) | |
Plain mud plastered (PMP) | 66.1 (55.6–66.7) | 32.5 (20.0–40.0) | 20 (10.0–30.0) | |
Overall (average test mortality) | 58.1 (50.0–66.7) | 34.8 (20.0–40.4) | 25.1 (10.0–33.3) | |
SP (WP 5%) at 25 mg/m | Brick unplastered and unpainted (BUU) | 94.4 (88.9–100) | 77.5 (70.0–80.0) | 63.9 (44.4–77.8) |
Cement plastered and lime-coated (CPLC) | 97.2 (88.9–100) | 82.5 (70.0–90.0) | 67.5 (60.0–80.0) | |
Plain mud plastered (PMP) | 95 (90.0–100) | 75 (66.7–88.9) | 58.3 (44.4–66.7) | |
Overall (average test mortality) | 95.6 (88.9–100) | 78.3 (66.7–90.0) | 63.2 (44.4–80.0) | |