Volume 17, Number 65 (fall 2013)                   JWSS 2013, 17(65): 233-248 | Back to browse issues page


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F. Heydari, A. Rasoulzadeh, A. R. Sepaskhah, A. Asghari, A. Ghavidel. Effect of Crop Residue Management on Soil Physical and Biological Properties, and Forage Corn and Barely Yield . JWSS. 2013; 17 (65) :233-248
URL: http://jstnar.iut.ac.ir/article-1-1893-en.html

Assistance Professor University of Mohaghegh Ardabili
Abstract:   (6840 Views)
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<0.05) decreased in residues burning treatment compared with the residues application treatment. Therefore, based on the results of this study residues' burning is not recommended in Ardabil.
Full-Text [PDF 361 kb]   (1253 Downloads)    
Type of Study: Research | Subject: Ggeneral
Received: 2012/01/7 | Accepted: 2012/12/4 | Published: 2013/12/4

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