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Modeling the Stress Relaxation of Agricultural Soils in Borno State, Nigeria
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: 2018 ASABE Annual International Meeting 1800302.(doi:10.13031/aim.201800302)
Authors: Eli Mamman, J O Ohu
Keywords: cow dung, chicken dung, groundnut haulms, moisture content, compaction, bulk density, penetration resistance, hydraulic conductivity, recovery
Results showed that for a particular level of compaction and organic matter level, the bulk density and penetration resistance values increased with increase in moisture content up to a point and there after decreased with further increases in moisture content. The increases were however, organic matter dependent. Hydraulic conductivity increased with increase in percentage of organic matter. Sandy loam soil produced the highest values of saturated hydraulic conductivity followed by clay loam and clay soils. Increase in organic matter increased soil recovery. At any given percentage of organic matter, recovery increased with increase in compaction level. This also implies that recovery reduces with increase in load. Groundnut haulms yielded the highest values of recovery followed by cow dung and chicken dung. This was for all the soils irrespective of compaction level.(Download PDF) (Export to EndNotes)