cassava. Similar responses to inorganic fertilizer application have been reported widely (FAO, 1994; Kamaraj et al., 2008; Asare et al., 2009; Adjei-Nsiah and Issaka, 2013). The manure analysis showed that cattle manure had high organic matter content (4.7%) and also supplied 49 and 99 kgha-1 N at the 5 and 10 t/ha. Thus, the response to manure is expected particularly noting that the organic matter and N content of the site was low