Assessment of damage and losses to kolanuts caused by kolanut weevils Balanogastis kolae (Desbr) Coleoptera: Curculionidae

Abstract

A study was carried out to assess the damage and losses to kola-nuts caused by kola-nuts weevils in Maiduguri. The experiment were carried out in Laboratory using split plot design and the treatment were Cola nitida and Cola acuminata as the main factors and fours levels of insect infestation as the sub-factors. The results showed that caffeine content of cola reduces significantly with increasing levels of infestation and the caffeine content of the two species differs significantly. The interaction of caffeine content between the cola species is also significant. The weight significant and they have equal opportunities of drying out and the storage method has very high level of significant.