Skip to main content

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