Table 2.
Mortality of nymphs of T. infestans exposed to insecticidal paints applied to three material surfaces.
| Mortality (%) in each experimental group Average (standard deviation) | |||||
| Days after paint application | Substrate | n | OP formulation | Pyrethroid formulation | Control |
| 1 | Cement | 10 | 100(0)a | 100(0)a | 0(0)b |
| Wood | 10 | 100(0)a | 100(0)a | 1(3.16)b | |
| Adobe | 10 | 100(0)a | 100(0)a | 1(3.16)b | |
| 47 | Cement | 10 | 100(0)a | 96(5.16)a | 1(3.16)b |
| Wood | 10 | 100(0)a | 98(4.22)a | 4(6.99)b | |
| Adobe | 10 | 100(0)a | 99(3.16)a | 1(3.16)b | |
| 80 | Cement | 10 | 100(0)a | 73(15.67)b | 1(3.16)c |
| Wood | 10 | 100(0)a | 80(17)b | 2(4.22)c | |
| Adobe | 10 | 100(0)a | 74(21.7)b | 0(0)c | |
| 125 | Cement | 10 | 100(0)a | 95(5.27)b | 5(9.72)c |
| Wood | 10 | 100(0)a | 96(6.99)ab | 0(0)d | |
| Adobe | 10 | 100(0)a | 95(7.07)b | 0(0)d | |
| 180 | Cement | 10 | 100(0)a | 74(12.65)b | 4(4.14)d |
| Wood | 10 | 100(0)a | 88(12.29)c | 4(2.78)d | |
| Adobe | 10 | 98(6.32)a | 89(14.5)c | 3(4.83)d | |
| 240 | Cement | 5 | 100(0)a | 76(32.86)b | 8(10.95)c |
| Wood | 5 | 100(0)a | 88(10.95)ab | 4(8.94)c | |
| Adobe | 5 | 100(0)a | 96(8.94)a | 0(0)d | |
| 365 | Cement | 10 | 97(3)a | 83(3.7)b | 7(3)c |
| Wood | 10 | 100(0)a | 86(3)b | 6(2.2)c | |
| Adobe | 10 | 100(0)a | 82(2.9)b | 5(3.1)c | |
OP: organophosphate formulation; P pyrethroid formulation; N: number of replicates with fourth instar nymphs. Same letters denote homogeneous groups within the same time after paint application P > 0.05, Factorial ANOVA.