Assessment of the growth of Vernonia amygdalina (L) with organic and inorganic manure
This research assessed the growth of Vernonia amygdalina (L) seedlings with organic and inorganic manure at different levels. Two weeks after transplanting, cowdung and NPK 15:15:15 at two different levels were applied to the seedlings, using Complete Randomized Design (CRD). Parameters assessed include collar diameter, shoot height, leaf number and branching. Data collected were subjected to statistical analysis. The result revealed that seedlings that received 1g and 1.5g of NPK performed better than those with 5g and 10g of cowdung. Plants with 1g of NPK had the highest mean shoot height and mean collar diameter of 16.25cm and 5.98mm while those with 5g of cowdung had low mean shoot height and collar diameter of 5.03cm and 3.02mm respectively. Seedlings with 1.5g NPK had mean leaf and mean branch number of 13.2 and 1.20, while those with 10g of cowdung had 10.00 and 3.02 respectively. Analysis of variance revealed that significant difference for all parameters assessed among the treatments (organic, inorganic and control at different levels) except for the number of branching which was not significant at p< 0.05.
Keywords: Vernonia amygdalina, organic, inorganic, cowdung, NPK, top soil.