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International Journal of Advanced Biological and Biomedical Research
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Volume Volume 1 (2013)
Kabirinejad, S., Kalbasi, M., Khoshgoftar Manesh, A., Hoodaji, M., Afyuni, M. (2014). The Relationship Between the Chemical Forms of Copper in the Soil Solid Phase Affected by Crop Residues With Phytoavailability of Copper in Soil. International Journal of Advanced Biological and Biomedical Research, 2(Issue 4 (2)), 21-30.
Shahrzad Kabirinejad; Mahmod Kalbasi; Amir Hosein Khoshgoftar Manesh; Mehran Hoodaji; Majid Afyuni. "The Relationship Between the Chemical Forms of Copper in the Soil Solid Phase Affected by Crop Residues With Phytoavailability of Copper in Soil". International Journal of Advanced Biological and Biomedical Research, 2, Issue 4 (2), 2014, 21-30.
Kabirinejad, S., Kalbasi, M., Khoshgoftar Manesh, A., Hoodaji, M., Afyuni, M. (2014). 'The Relationship Between the Chemical Forms of Copper in the Soil Solid Phase Affected by Crop Residues With Phytoavailability of Copper in Soil', International Journal of Advanced Biological and Biomedical Research, 2(Issue 4 (2)), pp. 21-30.
Kabirinejad, S., Kalbasi, M., Khoshgoftar Manesh, A., Hoodaji, M., Afyuni, M. The Relationship Between the Chemical Forms of Copper in the Soil Solid Phase Affected by Crop Residues With Phytoavailability of Copper in Soil. International Journal of Advanced Biological and Biomedical Research, 2014; 2(Issue 4 (2)): 21-30.

The Relationship Between the Chemical Forms of Copper in the Soil Solid Phase Affected by Crop Residues With Phytoavailability of Copper in Soil

Article 3, Volume 2, Issue 4 (2), April 2014, Page 21-30  XML PDF (483.63 K)
Document Type: Original Article
Authors
Shahrzad Kabirinejad email ; Mahmod Kalbasi; Amir Hosein Khoshgoftar Manesh; Mehran Hoodaji; Majid Afyuni
Receive Date: 28 July 2014,  Accept Date: 28 July 2014 
Abstract
Returning crop residues into the soil as a source of organic matter are an important source of copper and can play an important role in the soil fertility. In addition to the role of the organic matter in increasing the concentration of micronutrients in soil solution, attention should be also paid to the role of the kind and the quantity of the root’s exudates released in response to the incorporation of different crop residues  in soil.  Present  research was conducted with the objective of studying the effect of the kind of crop residues : Trifolium (Trifolium pretense L) and Sorghum (Sorghum bicolor L), with control on chemical forms of copper in soil solid phase and relationship with bioavailable of copperin a complete randomized block field experiment, consisting of  3 replications and 3 treatments. After 30 days, increasing  crop residues, soil samples collected and were used to measure Cu chemical forms in soil solid phase. Results showed that the crop residues  significant increased the concentration of DTPA-extractable Cu. The highest effect was obtained for Trifolium treatment. Crop residues significantly decreased the concentration of soil Cu-Carbonate and the largest increase was observed for Trifolium treatment. Sorghum  treatment significantly increased the concentration of soil Cu-Oxide in comparison with the control. Concentration of Cu-Organic both in Trifolium and Sorghum  treatments increased as compared with the control. But the highest effect was obtained for Trifolium treatment. Cu-Oxide and Cu-Residual forms showed a significant negative correlation and Cu-Organic form  showed a significant positive correlation with the concentration of DTPA-extractable Cu. Therefore, Trifolium  residues application decreased  the amount of soil Cu-Carbonate and soil Cu-Oxide forms (less soluble forms) and consequent  increase of Cu-Organic which in turn elevated the concentration of DTPA- extractable Cu. Trifolium was the most effective in increasing the phytoavailability of Cu in soil.
Keywords
Crop residues; Copper fractionation; Trifolium; Sorghum; DTPA- extractable Cu
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