The Insecticidal Activity of Neem and Palm Kernel Oils on Bean Weevil (Callosobruchus maculatus F.) (Coleoptera: Chrysomelidae: Bruchinae) Infestations of Stored Cowpea (Vigna unguiculata L. Walp)

Table 4

Effect of treatments on emergence hole count, % damaged seeds, and weevil perforation index at 10 weeks after infestation.

Treatments	N0P0	1N1 : 1P1	1N1 : 2P1	1N1 : 3P1	1N2 : 1P2	1N2 : 2P2	1N2 : 3P2	N1	N2	P1	P2	Pt	Mean	F-LSD (0.05)
EHC	3.88	0.88	0.88	0.71	0.88	0.88	0.88	0.71	0.88	0.71	0.71	1.05	1.09	1.355
%DG	59.5	9.5	11.0	11.5	9.5	9.5	10.0	7.6	9.6	7.8	10.9	12.4	14.1	20.16
WPI	90.0	30.5	31.9	32.6	30.7	30.7	30.7	28.6	42.0	28.6	31.7	33.7	36.8	16.13

EHC = emergence hole count; %DG = percentage damaged seeds; WPI = weevil perforation index. Data represents square root transformed values.