Citation
Akter, Falguni and Tinni, Humaira Hasan and Banarjee, Parmita and Hossain, Mohammad Zaber (2019) Effects of heavy metals (Cd, Zn and Cu) on carbon, nitrogen and iron mineralization in soil. Malaysian Journal of Sustainable Agriculture (MJSA) (Malaysia), 3. pp. 33-38. ISSN 2521-2931
Abstract
A sixty days laboratory incubation study was conducted to investigate the effect of heavy metals on soil carbon, nitrogen and iron mineralization under aerobic condition. Sulphate salts of cadmium, zinc and copper were added individually and in combinations to soil samples and incubated in different plastic pots. Soil organic carbon did not change significantly throughout the incubation period. Soil microbial biomass carbon declined from 0.38mgkgˉ¹to 0.19 mgkgˉ¹ in Cd treated soil and 0.39 mgkgˉ¹ to 0.28 mgkgˉ¹ in Cu treated soil which account for about 50% and 28% reduction (p ≤0.05) in biomass carbon respectively. Cd:Zn and Cu:Cd treated soil had reduced 36.84% while Zn:Cu had 42.11% reduction in biomass carbon.CO₂-C effluxes peaked by day 15 for all the single metal amended soil indicating that priming effects might have occurred. But in combination, metal showed some interaction for what the respiration rates were declined for the first 15 days. Rapid ammonification with presumed immobilization took place up to day 30. The result indicated a significant (p ≤0.05) net mineralization of nitrogen for Cd:Zn (63.72%) and Cu:Cd (66.66%) treatments at the end of the experiment. Available iron content showed significant changes in combined metal treatment than a single metal.
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Abstract
A sixty days laboratory incubation study was conducted to investigate the effect of heavy metals on soil carbon, nitrogen and iron mineralization under aerobic condition. Sulphate salts of cadmium, zinc and copper were added individually and in combinations to soil samples and incubated in different plastic pots. Soil organic carbon did not change significantly throughout the incubation period. Soil microbial biomass carbon declined from 0.38mgkgˉ¹to 0.19 mgkgˉ¹ in Cd treated soil and 0.39 mgkgˉ¹ to 0.28 mgkgˉ¹ in Cu treated soil which account for about 50% and 28% reduction (p ≤0.05) in biomass carbon respectively. Cd:Zn and Cu:Cd treated soil had reduced 36.84% while Zn:Cu had 42.11% reduction in biomass carbon.CO₂-C effluxes peaked by day 15 for all the single metal amended soil indicating that priming effects might have occurred. But in combination, metal showed some interaction for what the respiration rates were declined for the first 15 days. Rapid ammonification with presumed immobilization took place up to day 30. The result indicated a significant (p ≤0.05) net mineralization of nitrogen for Cd:Zn (63.72%) and Cu:Cd (66.66%) treatments at the end of the experiment. Available iron content showed significant changes in combined metal treatment than a single metal.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | soil |
| AGROVOC Term: | carbon |
| AGROVOC Term: | nitrogen |
| AGROVOC Term: | iron |
| AGROVOC Term: | mineralization |
| AGROVOC Term: | incubation period |
| AGROVOC Term: | heavy metals |
| AGROVOC Term: | cadmium |
| AGROVOC Term: | zinc |
| AGROVOC Term: | copper |
| Geographical Term: | Bangladesh |
| Depositing User: | Mr. Khoirul Asrimi Md Nor |
| Date Deposited: | 28 Apr 2026 04:08 |
| Last Modified: | 28 Apr 2026 04:08 |
| URI: | http://webagris.upm.edu.my/id/eprint/3863 |
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