The trial aimed at assessing the effect of frequency harvest, plant population and N.P.K fertilizer Vernonia amygdalina(Bitter leaf) was conducted Teaching Research farm, University Abuja, Nigeria. Split plot treatment arrangement fitted into a randomized complete Block Design (RCBD) with 3 replications used. Plant used were10,000,stands/ha 40,000 stands/ha 4 weeks harvest. Data collected were ...