Effect of animal manures on selected soil properties: II. Nitrogen, Potassium and Phosphorus AO Ano Soil Science Laboratories, National Root Crops Research Institute, Umudike, PMB 7006, Umuhia, Abia state JA Agwu Department of Chemical Sciences, Michael Okpara University of Agriculture, Umudike, Abia state Abstract No Abstract. Nigerian Journal of Soil Science Vol. 16 (1) 2006: pp. 145-150 Requires Subscription PDF Published 2007-08-08 Issue Vol. 16 (2006) Section Articles Copyright for articles published in this journal is retained by the journal.