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Pakistan Journal of Biological Sciences
  Year: 2004 | Volume: 7 | Issue: 6 | Page No.: 905-911
DOI: 10.3923/pjbs.2004.905.911
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A Comparison of Some Physical and Chemical Soil Quality Indicators Influenced by Different Crop Species

Coskun Gulser

The effects of six different crop species on some physical and chemical soil quality indicators of a clay soil were compared with a fallow plot. Cropping treatments increased the soil organic matter (OM) content from 2.28% for bare soil to 3.18% for the bromegrass treatment. Increases in OM content due to different cropping regimes were obtained in the following order: bare soilorganic matter content caused considerable increases in soil structural stability (SSI), porosity (F), infiltration (I), total N and exch. K content and reductions in bulk density (BD), penetration resistance (PR), pH and exch. Na content over the bare soil. Bromegrass (BR) treatment compared with the other treatments showed the highest increases in OM of 39.5%, SSI of 9.68%, F of 14.84% and the largest decrease in BD of -12.41%. Alfalfa treatment over the bare soil showed the highest increases in EC of 124.60% and total N of 36.46%. All cropping treatments improved the infiltration ratio which had significant positive correlations with F (0.63**), SSI (571**), EC (0.47*), OM (0.47*) and significant negative correlations with BD (-0.63**), PR (-0.75**) and exchangeable Na (-0.53*). Some other significant correlations among the some soil quality indicators were as follows: F x PR (-0.72**), SSI x PR (-0.67**), OC x K (0.84**), pH x EC (-0.83**), OC x total N (0.78**), SSI x Na (-0.70**) and OC x PR (-0.67**). Besides organic matter content, EC and exch. Na content can also be indicators that define physical soil quality properties very well under different cropping treatments. Bromegrass and alfalfa may be integrated with a cropping system to improve soil physical and chemical properties and for sustainable soil management.
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  •    The Influence of Measurement Methodology on Soil Infiltration Rate
How to cite this article:

Coskun Gulser , 2004. A Comparison of Some Physical and Chemical Soil Quality Indicators Influenced by Different Crop Species. Pakistan Journal of Biological Sciences, 7: 905-911.

DOI: 10.3923/pjbs.2004.905.911






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