Bulletin of the National Research Centre

Table 3 Efficacy of two essential oils in protecting dry dates against Surinam beetle, Oryzaephilus surinamensis, adults under storage conditions

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

Conc. (ml/625 cm*)	Storage period for 1 month
	Ocimum basilicum			Eucalyptus globulus
	Mean no. alive adults ±SE	% reduction in infestation	% qualitative lose	Mean no. alive adults ±SE	% reduction in infestation	% qualitative lose
10.0	19.2 ± 2.7ijk	92.4	11.55	133.0 ± 4.74hij	46.8	49.55
20.0	9.6 ± 1.12ijkl	96.2	5.33	119.4 ± 4.87ijk	52.3	42.88
40.0	0.0 ± 0.0l	100	0.0	85.2 ± 4.02kl	66.0	26.88
80.0	0.0 ± 0.0l	100	0.0	32.2 ± 3.56m	87.2	10.88
Cont.	248.8 ± 6.35e	–	52.44	248.8 ± 6.35e	–	52.44
Storage period for 2 months
10.0	27.4 ± 3.0ijk	90.3	22.4	165.4 ± 11.52gh	41.0	75.77
20.0	14.4 ± 2.06ijkl	94.9	8.44	161.2 ± 14.9gh	42.3	68.0
40.0	6.0 ± 1.04kl	97.9	11.33	132.0 ± 9.23hij	52.8	55.77
80.0	0.0 ± 0.0l	100	0.0	52.6 ± 5.52lm	81.2	34.0
Cont.	278.4 ± 13.3c	–	87.11	278.4 ± 13.3c	–	87.11
Storage period for 3 months
10.0	47.2 ± 6.47g	89.2	23.55	302.0 ± 6.04e	30.6	83.55
20.0	32.2 ± 3.2ghi	92.6	20.44	266.2 ± 11.02ef	38.8	79.55
40.0	18.4 ± 2.09ijk	95.8	14.88	230.6 ± 20.32f	47.0	74.44
80.0	8.6 ± 1.63jkl	98.1	8.0	92.8 ± 23.8jkl	78.8	44.44
Cont.	433.2 ± 17.59b	–	96.44	433.2 ± 17.59b	–	96.44
Storage period for 4 months
10.0	92.2 ± 4.18e	86.8	59.11	552.6 ± 13.34b	20.5	98.0
20.0	66.6 ± 5.08f	90.5	40.2	476.4 ± 37.42c	31.4	97.11
40.0	45.2 ± 10.85g	93.5	36.11	420.4 ± 30.74d	39.5	88.0
80.0	15.4 ± 1.86ijkl	97.8	12.4	197.2 ± 5.31g	71.4	68.66
Cont.	694.0 ± 8.82a	–	98.44	694.0 ± 8.82a	–	98.44
F	761.55*	–	–	131.91*	–	–
LSD_0.05	18.38	–	–	43.78	–	–

Means followed by the same letters within columns indicate no significant difference (P ≥ 0.05)
*Area of the sack

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