Skip to main content

Table 3 Perforation Index caused by C. maculatus in cowpea seeds treated with P. guineense 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)

Total no of seeds

Number of damaged seeds

% seed damaged

% weight loss

*Beetle Perforation Index (BPI)

Leaf

1.0

95.25

4.00

4.50 ± 0.07ab

10.00 ± 1.04a

10.00 ± 1.04a

Seeds

94.75

1.00

1.05 ± 0.02ab

5.00 ± 0.02a

2.50 ± 0.02a

Leaf

2.0

94.50

1.00

1.05 ± 0.01ab

5.00 ± 0.02a

2.50 ± 0.02a

Seeds

95.25

0.00

0.00 ± 0.00a

0.00 ± 0.00a

0.00 ± 0.00a

Leaf

3.0

94.00

0.00

0.00 ± 0.00a

0.00 ± 0.00a

0.00 ± 0.00a

Seeds

95.50

0.00

0.00 ± 0.00a

0.00 ± 0.00a

0.00 ± 0.00a

Untreated

0.0

95.25

40.00

42.50 ± 3.75a

75.00 ± 3.20a

>50.00 ± 0.00

  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
  2. * - Perforation Index