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    W. Negassa

    Papers
    Inmpact of Land use and management practices on Chemical properties of some soils of Bako area, Western Ethiopiamore
    by W. Negassa
    Soil Fertility Management Technologies for Sustainable Maize Production in Ethiopiamore
    by W. Negassa and Tenaw Kassa
    ... Bako Agricultural Research Center, Bako, Ethiopia. Dawit Solomon, J. Lehmann, and CE Martìnez. 2003. ... Soil Science Society of America Journal 67: 1721–1731. DawitSolomon, F. Fritzsche, M. Tekalign, J. Lehmann, and W. Zech. 2002a. ...
    Publisher: repository.cimmyt.org
    Publication Name: … the Challenges of …
    INFLUENCE OF SPECIFIC ORGANIC COMPOUNDS ON PHOSPHORUS SORPTION AND DISTRIBUTION IN A TROPICAL SOILmore
    by W. Negassa
    Publication Date: 2008
    Publication Name: Soil Science
    Research Interests:
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    How does the Hedley sequential phosphorus fractionation reflect impacts of land use and management on soil phosphorus: A reviewmore
    by W. Negassa
    Publication Date: 2009
    Publication Name: Journal of Plant Nutrition and Soil Science
    Research Interests:
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    Phosphorus Speciation in Sequentially Extracted Agro-Industrial By-Products: Evidence from X-ray Absorption Near Edge Structure Spectroscopymore
    by W. Negassa
    Publication Date: 2010
    Publication Name: Journal of Environment Quality
    Research Interests:
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    Phosphorus Speciation in Agro-Industrial Byproducts: Sequential Fractionation, Solution 31 P NMR, and P K - and L 2,3 -Edge XANES Spectroscopymore
    by W. Negassa
    Publication Date: 2010
    Publication Name: Environmental Science & Technology
    Research Interests:
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    Integrated Use of Organic and Inorganic Fertilizers for Maize Productionmore
    by W. Negassa
    Publication Name: tropentag.de
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    Response of tef to nitrogen and phosphorus fertilizers under farmers' conditionsmore
    by W. Negassa
    ... Pagination, p. 169-175. Source, Sebil, Asfaw Zeleke (ed.)Hailu Tefera (ed.)Gemechu Keneni (ed.)Amsalu Ayana (ed.)Tesfaye Tefera (ed.)Solomon Assefa (ed.)Desalegn Debelo (ed.)Belay Simane (ed.).- Addis Abeba (Ethiopia): Crop Science... more
    ... Pagination, p. 169-175. Source, Sebil, Asfaw Zeleke (ed.)Hailu Tefera (ed.)Gemechu Keneni (ed.)Amsalu Ayana (ed.)Tesfaye Tefera (ed.)Solomon Assefa (ed.)Desalegn Debelo (ed.)Belay Simane (ed.).- Addis Abeba (Ethiopia): Crop Science Society of Ethiopia, May 2006. ...
    Publisher: agris.fao.org
    Publication Date: 2006
    Publication Name: The Conference of the …
    Determination of Optimum farmyard Manure and NP Fertilizers for Maize on farmers Fieldmore
    by Joel Ransom, K. Negisho, and W. Negassa
    Publisher: apps.cimmyt.org
    Publication Date: 2001
    Publication Name: Seventh Eastern and …
    Research Interests:
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