An experiment was set up to investigate the effect of different levels of NPK 20; 10; 10 on the concentration of nitrogen and heavy metals in a typic haphstult in Abakaliki and yield characteristics of maize as influenced by inorganic fertilizer. The experiment was conducted at the Teaching and Research Farm of the Faculty of Agriculture and Natural Resources Management, Ebonyi State University, Nigeria. The treatments comprised of four levels of fertilizer rates (0 kg.ha-1, 750 kg.ha-1,1500 kg.ha-1 and 2000 kg.ha-1 ) represented as T1,T2,T3, and T4 respectively. The experiment was replicated five times and Oba 98 was used as test crop. Each the experimental plot measured 3 X 3 meter and the
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