Table 3 Population parameters (mean ± SE) of Tetranychus urticae on cucumber plants treated with different concentrations of spermine
From: The effect of spermine on Tetranychus urticae-Cucumis sativus interaction
Treatment | GRR (egg/individual) | R0 (egg/individual) | rm (d−1) | λ (d−1) | T (d) |
|---|---|---|---|---|---|
Control | 75.95 ± 11.97b | 45.05 ± 6.47b | 0.2735 ± 0.0097a | 1.3146 ± 0.0128a | 13.91 ± 0.30b |
Spm 1 mM | 127.72 ± 15.42a | 75.84 ± 11.52a | 0.2826 ± 0.0099a | 1.3266 ± 0.0131a | 15.31 ± 0.21a |
Spm 2 mM | 91.17 ± 11.79ab | 45.26 ± 7.85b | 0.2586 ± 0.0102b | 1.2951 ± 0.0155b | 14.74 ± 0.22a |
Spm 3 mM | 98.21 ± 14.46ab | 58.61 ± 8.95ab | 0.2699 ± 0.0102ab | 1.3099 ± 0.0133ab | 15.08 ± 0.30a |