Manganese Release Kinetics In Some Calcareous Soils From The Sulaimani Governorate In Iraqi Kurdistan Region | ||||
| Journal of Soil Sciences and Agricultural Engineering | ||||
| Article 4, Volume 12, Issue 6, June 2021, Page 425-429 PDF (1.22 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jssae.2021.182660 | ||||
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| Authors | ||||
kamal hama karim   1; Shuela Mohammed Sheikh-Abdullah2; Dlsoz Hama Talib Faraj3; Sairan Majeed Mohammed Ali3
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| 1University of Sulaimani - College of Agriculture University of Sulaimani - College of Agriculture | ||||
| 2Natural Resources Department, College of Agricultural Engineering Sciences, University of Sulaimani, Sulaimani, Kurdistan Region, Iraq | ||||
| 3Agricultural Research Center, Sulaimani, Kurdistan Region, Iraq | ||||
| Abstract | ||||
| This study was carried out in the Sulaimani Governorate, Iraqi Kurdistan Region, to estimate manganese release kinetics in five calcareous soils including (Sharazor, Qaradagh, Bazian, Mawat, and Surdash). The highest amount of Mn release during 48 hours was least in soil Surdash (64.00 mg kg-1), while Soil Mawat exhibited the highest release (541.82 mg kg-1). The value of first order release rate constant (k1) from first order differed from 0.076 to 0.102 with a mean of (0.091 h-1). The mean values of the rate constant (a and b) from the power function model were (2.128 mg Mn kg -1(h-1)b and 0.916 mg Mn kg-1)−1) respectively varied widely with the five soil. The value of second order release constant (k2) from second order model, varied from (-0.012) to (-0.005) with a mean of (-0.008 mg Mn kg-1)-1. The first order, power function, and second order were the best-fitted model used to describe Mn release process very well in the investigated soils. | ||||
| Keywords | ||||
| Manganese; release; Kinetic; calcareous soils; first order; power function and second order | ||||
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