Concentrations (%) Period embryonic Hatching total (%) Mean±SE % reduction Larva mortality (%) Mean±SE
0.0 5.50 ± 0.64 79.17 ± 2.58a --------- ---------
0.1 5.75 ± 0.57 49.00 ± 5.70b 38.1 21.65 ± 4.04a
0.3 5.87 ± 0.98 19.82 ± 6,91c 74.9 89.17 ± 4.90b
0.5 6.21 ± 1.10 17.82 ± 6.82c 77.5 97.01 ± 2.29b
1.0 5.60 ± 0.67 15.34 ± 5.97c 80.7 95.58 ± 2.36b
2.0 5.28 ± 1.21 0.83 ± 0.83c 98.9 97.52 ± 2.56b
F-values 0.4041NS 28.15*** 97.39***
Means in each column followed by the same letter are not significantly different by Tukey’s test (P<0.05); *** P< 0.0001; NSnot significant.
Table 2: Toxicity of neem oil on Diatraea saccharalis (Lepidoptera: Crambidae) hatching and caterpillars mortality when applied to eggs immediately after being laid.