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Bulletin of the National Research Centre

Table 2 Fumigant activity of the selected essential oils against Surinam beetle, Oryzaephilus surinamensis adults during exposure periods

From: Fumigant and toxic activity of some aromatic oils for protecting dry dates from Oryzaephilus surinamensis (L.) (Coleoptera: Silvanidae) in stores

Concentrations

(μl/l air)

Tested oils

Ocimum basilicum

Eucalyptus globulus

LT50

Slope (±)

χ²

LT50

Slope (±)

χ²

4.0

76.4

2.5 ± 0.4

0.02

360.8

1.8 ± 0.7

0.65

8.0

57.4

2.1 ± 0.3

0.14

226.5

1.6 ± 0.5

0.003

16.0

41.06

2.7 ± 0.3

0.09

195.4

1.1 ± 0.4

0.39

32.0

25.02

2.3 ± 0.4

1.58

143.3

0.9 ± 0.3

0.01

  1. LT50 calculated in hours
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