EFFECTS OF HEAVY METALS (Cd, Zn and Cu) ON CARBON, NITROGEN AND IRON MINERALIZATION IN SOIL
Journal Title: Malaysian Journal of Sustainable Agriculture (MJSA) - Year 2019, Vol 3, Issue 1
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 0.38mgkg-1to 0.19 mgkg-1 in Cd treated soil and 0.39 mgkg-1 to 0.28 mgkg-1 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 to ok 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.
Authors and Affiliations
Falguni Akter, Humaira Hasan Tinni, Parmita Banarjee, Mohammad Zaber Hossain
Keywords
Related Articles
- EP ID EP591245
- DOI 10.26480/mjsa.01.2019.33.38
- Views 131
- Downloads 0
Growth of Chenopodium quiona Wild under Naturally Salt Affected Soils
Salinity and sodicity is today one of the most shocking threat in the irrigated agriculture. Mostly this is an abiotic strain that influences germination and plant growth. Quinoa (Chenopodium quinoa Wild.) has garnered m...
IMPACT OF CLIMATE CHANGE ON FARMERS IN THE TALENSI DISTRICT OF THE UPPER EAST REGION OF GHANA
This paper focuses on the impact of climate change on the lives of rural farmers in the Pwalugu and Balungu communities of the Upper East Region of Ghana since farmers all over the country have been exposed to various ad...
INTERCROPPING OF POTATO WITH BRINJAL
A field experiment was conducted to find out the spacing of potato – brinjal intercropping system and land utilization and economic return at the Regional Agricultural Research Station, Jamalpur during rabi 2017-2018. Th...
MICROBIAL POPULATION CHANGES IN THE RHIZOSPHERE OF TOMATO SOLANUM LYCOPERSICUM VARIETIES DURING EARLY GROWTH IN GREENHOUSE
The microbial population changes in the rhizosphere of two varieties of tomato: cherry and plum were studied. They were grown in a greenhouse for five weeks. Standard microbiological procedures were applied. Biochemical...
Capacity of black soldier fly and house fly larvae in treating the wasted rice in Malaysia.
Rice is the major source of carbohydrate in the world and also the common composition in avoidable food waste. Due to the rich food culture in Malaysia, different pretreated rice waste is generated and the pretreat-compo...