The Journal of Basic and Applied Zoology

Table 3 Adulticidal activity of Nicotiana tabacum leaf extracts against Sitophilus oryzae at 24 h

From: Toxicity of tobacco Nicotiana tabacum Linnaeus (Solanaceae) leaf extracts to the rice weevil Sitophilus oryzae Linnaeus 1763 (Coleoptera: Curculionidae)

Solvent extracts	Concentration (mg/L)
Solvent extracts	UC	TC	0.625	1.25	2.50	5.00	10.00	20.00
Hexane	0.00 ± 0.00^a1	0.00 ± 0.00^a1	0.00 ± 0.00^a1	0.00 ± 0.00^a12	4.66 ± 0.57^b12	8.00 ± 2.00^c2	10.0 ± 0.00^d2	10.0 ± 0.00^d2
Petroleum ether	0.00 ± 0.00^a1	0.00 ± 0.00^a1	4.33 ± 4.16^ab12	8.00 ± 1.00^bc4	8.33 ± 2.88^bc2	9.00 ± 1.73^bc2	10.0 ± 0.00^c2	10.0 ± 0.00^c2
Dichloromethane	0.00 ± 0.00^a1	0.00 ± 0.00^a1	0.00 ± 0.00^a1	0.66 ± 1.15^ab12	0.66 ± 0.57^ab1	1.00 ± 1.00^ab1	4.00 ± 3.00^b1	4.33 ± 2.08^b1
Chloroform	0.00 ± 0.00^a1	0.00 ± 0.00^a1	2.00 ± 1.00^b12	5.00 ± 1.00^c3	7.33 ± 0.57^d2	10.0 ± 0.00^e2	10.0 ± 0.00^e2	10.0 ± 0.00^e2
Ethyl acetate	0.00 ± 0.00^a1	0.00 ± 0.00^a1	0.00 ± 0.00^a1	0.00 ± 0.00^a1	3.00 ± 2.64^a1	9.33 ± 1.15^b2	10.0 ± 0.00^c2	10.0 ± 0.00^c2
Acetone	0.00 ± 0.00^a1	0.00 ± 0.00^a1	5.66 ± 0.57^b2	7.00 ± 1.00^c34	7.66 ± 0.57^cd2	8.66 ± 0.57^d2	10.0 ± 0.00^e2	10.0 ± 0.00^e2
Methanol	0.00 ± 0.00^a1	0.00 ± 0.00^a1	1.00 ± 1.00^ab1	2.66 ± 1.15^bc	3.33 ± 1.52^bc1	3.66 ± 0.57^c1	5.00 ± 1.00^cd1	6.33 ± 1.52^d12
Aqueous	0.00 ± 0.00^a1	0.00 ± 0.00^a1	0.00 ± 0.00^a1	0.33 ± 0.57^a1	0.66 ± 0.57^a1	3.66 ± 0.57^a1	4.00 ± 2.64^ab1	5.00 ± 3.00^b1

Values are mean numbers expressed in mg/L. UC untreated control, TC treated control; values are mean of three replicates of three trials ± standard deviation; different superscript alphabets in rows indicate values significant than respective UC and TC, and different superscript numerical in columns indicate values significant between the extracts difference at p < 0.05 level by one-way ANOVA followed by Tukey test performed; similarity in superscript alphabets and numerical in rows and columns indicate no significant variation

Back to article page