Chemical composition and toxicity of some Agro waste-derived insecticides against Angoumois grain moth, Sitotroga ceralella (Olivier) [Lepidoptera: Gelechiidae] infesting stored paddy grains

Bulletin of the National Research Centre

Table 5 Lethal concentrations (LC) of adult S. cerealella treated with agro waste extracts

Agro wastes	Slope ± SE	Intercept ± SE	χ²	Exposure period (h)	LC₅₀ (LCL-UCL) (ml)	LC₉₀ (LCL-UCL) (ml)	p-value
Rice husk	1.02 ± 0.23	0.48 ± 0.15	7.88	24	0.34 (0.15–4.33)	0.81 (0.71–1.03)	0.05
	1.04 ± 0.23	0.73 ± 0.15	15.80	48	0.20 (0.13–3.04)	0.67 (0.5–2.31)	0.00
	1.25 ± 0.25	1.03 ± 0.15	14.58	72	0.15 (0.10–2.52)	0.58 (0.52–1.23)	0.00
	1.66 ± 0.25	1.48 ± 0.16	22.52	96	0.12 (0.08–2.16)	0.50 (0.46–0.75)	0.00
Groundnut Pod	1.00 ± 0.23	0.64 ± 0.15	7.61	24	0.22 (0.16–0.29)	0.74 (0.62–0.94)	0.06
Groundnut Pod	1.32 ± 0.24	1.17 ± 0.16	25.45	48	0.13 (0.11–0.45)	0.55 (0.41–1.02)	0.00
	1.55 ± 0.25	1.50 ± 0.16	30.86	72	0.11 (0.09–0.31)	0.49 (0.37–0.85)	0.00
	1.86 ± 0.26	1.92 ± 0.18	26.55	96	0.09 (0.06–0.12)	0.44 (0.41–0.50)	0.00
Cowpea Pod	1.15 ± 0.23	0.92 ± 0.15	12.76	24	0.16 (0.14–1.14)	0.64 (0.55–1.46)	0.00
Cowpea Pod	1.59 ± 0.25	1.53 ± 0.18	32.30	48	0.11 (0.09–0.92)	0.50 (0.42–1.27)	0.00
	1.74 ± 0.26	1.86 ± 0.18	28.45	72	0.09 (0.06–0.84)	0.44 (0.41–0.50)	0.00
	2.07 ± 0.29	2.25 ± 0.21	40.68	96	0.08 (0.07–0.94)	0.38 (0.24–0.41)	0.00
Maize cob	1.03 ± 0.23	0.56 ± 0.15	7.98	24	0.28 (0.18–0.32)	0.78 (0.65–1.02)	0.05
	1.13 ± 0.23	0.91 ± 0.15	13.50	48	0.16 (0.13–0.49)	0.67 (0.56–0.98)	0.00
	1.25 ± 0.24	1.16 ± 0.16	23.83	72	0.12 (0.10–0.39)	0.58 (0.32–0.56)	0.00
	1.61 ± 0.25	1.57 ± 0.17	29.24	96	0.11 (0.07–0.24)	0.48 (0.34–0.63)	0.00

χ² = Chi-square value, S.E = Standard error, LCL = Lower confidence limit and UCL = Upper confidence limit