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Table 5 Progeny (F1) development of C. maculatus in cowpea seeds that were protected with P. guineense seed powders

From: Perforation index assessment of cowpea seeds against cowpea bruchid, Callosobruchus maculatus (Fabricius) [Coleoptera: Chrysomelidae], infestation using Piper guineense

P. guineense powders Conc. (g) Mean number of eggs laid % adult emergence % IR
P. guineense leaf 1 10.00 ± 1.04b 10.00 ± 1.04b 97.50 ± 2.50
P. guineense seeds 7.50 ± 0.25b 0.00 ± 0.00a 100.00 ± 0.00c
Methanol (+ve control) 47.50 ± 2.25c 63.50 ± 3.70c 25.00 ± 2.20b
P. guineense leaf 2 5.00 ± 0.04b 0.00 ± 0.00a 100.00 ± 0.00c
P. guineense seeds 2.50 ± 0.02ab 0.00 ± 0.00a 100.00 ± 0.00c
Methanol (+ve control) 45.00 ± 2.20c 60.00 ± 3.20c 30.00 ± 2.04b
P. guineense leaf 3 1.00 ± 0.01ab 0.00 ± 0.00a 100.00 ± 0.00c
P. guineense seeds 0.00 ± 0.00a 0.00 ± 0.00a 100.00 ± 0.00c
Methanol (+ve control) 42.50 ± 2.04c 57.50 ± 3.50c 35.00 ± 3.20b
Untreated (−ve control) 0 62.50 ± 3.75d 64.00 ± 3.22c 0.00 ± 0.00a
  1. Each value is a mean ± standard error of four replicates. Means within the same column followed by the same letter are not significantly different at P > 0.05 using Tukey’s test