Browsing Department of Soil Science by Author "Peter A Opala"
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Comparative effects of lime and organic materials on selected soil chemical properties and nutrient uptake by maize in an acid soil
Peter A Opala (Scholars Research Library, 2011)The use of phosphate fertilizers and lime to mitigate P deficiencies and Al toxicities in Kenya has not been effective due to their high cost. Organic materials (OMs) are therefore being tested as cheaper alternatives but ... -
Management of organic inputs in East Africa: A review of current knowledge and future challenges
Peter A Opala (Scholars Research Library, 2011)Organic inputs in Africa are used mainly as sources of crop nutrients but most of the ones available on the farms such as crop residues, animal manures and composts are of low quality and insufficient quantity. Proper ...