Diurnal visitation of flowers of cowpea by insect pollinators with emphasis on the Western honeybee, Apis mellifera, in Bauchi, Nigeria
In order to study the diurnal visitation of flowers of cowpea by insect pollinators, the number of open flowers of cowpea and the kind and number of insects visiting the flowers were recorded for a period of 5 minutes and at intervals of 1 hour from sunrise to sunset in a quadrat of 1 m² placed randomly on a cowpea farm. Cowpea flowers were observed to open from 6:00 hour to 13:00 hour, daily. A total of 388 open flowers and 256 insect visitors were recorded during the 7-day period of the st...