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Table 2 Corrected mortality percentage of Ephestia cautella larvae treated with Bacillus thuringiensis at different exposure periods

From: Efficacy of some entomopathogens against Ephestia cautella (Walker) (Lepidoptera: Pyralidae) in stored date fruits

Concentrations Mortality % of E. cautella larvae after exposure periods
3 days 5 days 7 days 14 days
2.0 × 108 6.67 d 17.59 d 31.50 d 44.59 d
2.0 × 109 16.33 c 22.33 c 42.17 c 52.00 c
2.0 × 1010 26.17 b 28.17 b 56.00 b 63.17 b
2.0 × 1011 30.50 a 36.00 a 68.88 a 72.50 a
L.S.D 4.0024 4.3662 4.912 5.2759
Pr  < .0001  < .0001  < .0001  < .0001
  1. Mean in same column followed by the same letters is not significant
  2. L.S.D., least significant difference; Pr., probability level