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Table 7 Lethal Concentration (LC50 and LC90) of agro-waste extracts against C. maculatus

From: Phytochemical compositions and insecticidal efficacy of four agro-waste used as biological control of cowpea beetle, Callosobruchus maculatus (Fab.) [Coleoptera: Bruchidae]

Agro waste

 

Exposure time (Hours) (Lower—Upper Limit)

 

24

48

72

96

Rice husk

LC50

0.40 (0.22–0.42)

0.17 (0.09–0.23)

0.09 (0.04–0.29)

0.05 (0.02–0.17)

LC90

3.64 (2.28–10.58)

2.98 (1.26–18.85)

2.63 (1.70–8.45)

1.62 (0.84–9.82)

Groundnut pod

LC50

0.17 (0.04–0.66)

0.12 (0.02–0.29)

0.07 (0.06–0.14)

0.05 (0.04–0.11)

LC90

2.77 (1.01–5.84)

2.19 (0.79–3.44)

1.01 (0.67–2.34)

0.44 (0.48–1.29)

Cowpea pod

LC50

0.15 (0.09–0.22)

0.09 (0.03–0.18)

0.06 (0.01–0.18)

0.04 (0.07–0.16)

LC90

2.34 (1.57–15.79)

1.28 (1.10–12.10)

1.34 (0.52–2.16)

0.68 (0.49–1.12)

Maize cob

LC50

0.43 (0.26–0.52)

0.34 (0.17–0.32)

0.15 (0.06–1.73)

0.08 (0.01–0.13)

LC90

3.96 (2.54–12.77)

3.46 (1.99–8.20)

2.94 (1.39–6.14)

1.98 (1.03–5.46)