RT - Journal Article T1 - Effect of Crop Residue Management on Soil Physical and Biological Properties, and Forage Corn and Barely Yield JF - JSTNAR YR - 2013 JO - JSTNAR VO - 17 IS - 65 UR - http://jstnar.iut.ac.ir/article-1-1893-en.html SP - 233 EP - 248 K1 - Residues application K1 - Residues burring K1 - Soil physical properties K1 - Soil hydraulic properties K1 - Micro-organisms K1 - Basal respiration. AB - The objective of this study was to evaluate the effects of crop residues management on soil physical and biological properties. The impacts of residue management on yield of forage corn and barley and soil micro-organisms population were also studied. The results showed that application of crop residues increased soil organic matter (22.2 %), saturated hydraulic conductivity (51.9 %), porosity (3.7 %), mean weight diameter (MWD) of the aggregates (5.4 %), and field capacity (5.8 %) and decreased bulk density (3.7 %) Whereas crop residues burring decreased soil organic matter (31.8 %), saturated hydraulic conductivity (36.6 %), porosity (0.5 %), mean weight diameter (MWD) of the aggregates (5.1 %), and field capacity (4.1 %) and increased soil bulk density (1 %). Soil water characteristic curves showed that the observed differences in soil water retention of application and burning residues treatments were higher at low matric suctions than those at high water matric suction. The results demonstrated that micro-organisms population significantly (P LA eng UL http://jstnar.iut.ac.ir/article-1-1893-en.html M3 ER -