THE EFFECT OF SOME PHYSIOCHEMICAL FACTORS ON PEDOGENIC DISTRIBUTION OF MANGANESE IN SOME
Mesopotamia Journal of Agriculture,
2012, Volume 40, Issue 3, Pages 78-87
AbstractEight soil pedons were chosen. in Nineveh Province to determine the effect of physiochemical factors 0n pedogenic distribution of manganese extracted by DCB method. The results indicated that topography had a significant effect in all studied soils. the highest . manganese values in Al-Hamdania ranged between (40-47) mg.Kg-1. followed by Al-Fadhlia & Kara-Tapa regions ranged between (36-39). (11.6-35) mg.Kg-1 respectively. Soil depth had significant effect in Al-Fadhlia & Al-Hamdania regions with ratio effect of 30% . 50% respectively. CaCO3 had a significant effect in Al-Hamdania region only. Organic matter had a slight effect. Soil fine fraction (silt & clay) had unclear effect in which manganese ranged between 37.2-39.52 mg.Kg-1in Al-Hamdania region. Soil pH had non-significant effect on manganese pedogenic distribution in studied soils. DCB was effective extracting method for Mn-Fe concretions and thin black coatings on red and green mudstone.
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