Onwuka, M. I., Michael Okpara University of Agriculture Umudike, Nigeria

• Journal of Sustainable Agriculture and the Environment (JSAE) Vol 16 No 1 (2015): Journal of Sustainable Agriculture and the Environment - Research/Crop & Soil Sciences
  Effects of Agricultural Waste Ash on Nutrients Concentration and Yield of Maize (Zea Mays L) in a Haplic Acrisolof Southeastern Nigeria
  Abstract