How cattle grazing influences heavy metal concentrations in tropical pasture soils

This study investigates the impact of short-term (1.5-year) heavy and long-term (33-year) moderate grazing intensities on the heavy metal concentrations in soils of tropical pastures. The concentration of heavy metals (Cd, Fe, Mn, Cu, Cr, Pb, and Zn) was determined in the Livestock Section of Univer...

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Main Authors: Ajorlo, Majid, Abdullah, Ramdzani, Mohd Hanif, Ahmad Husni, Abd Halim, Mohd Ridzwan, Yusoff, Mohd Kamil
Format: Article
Language:English
Published: HARD Publishing 2010
Online Access:http://psasir.upm.edu.my/id/eprint/11326/
http://psasir.upm.edu.my/id/eprint/11326/1/11326.pdf
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author Ajorlo, Majid
Abdullah, Ramdzani
Mohd Hanif, Ahmad Husni
Abd Halim, Mohd Ridzwan
Yusoff, Mohd Kamil
author_facet Ajorlo, Majid
Abdullah, Ramdzani
Mohd Hanif, Ahmad Husni
Abd Halim, Mohd Ridzwan
Yusoff, Mohd Kamil
author_sort Ajorlo, Majid
building UPM Institutional Repository
collection Online Access
description This study investigates the impact of short-term (1.5-year) heavy and long-term (33-year) moderate grazing intensities on the heavy metal concentrations in soils of tropical pastures. The concentration of heavy metals (Cd, Fe, Mn, Cu, Cr, Pb, and Zn) was determined in the Livestock Section of University Putra Malaysia, Selangor, Malaysia. The heavy metal concentrations in the soil were not affected (P>0.05) by shortterm heavy grazing intensity. The concentrations of Fe, Mn, and Zn were significantly affected (P≤0.05) by long-term moderate grazing or soil depth and by the interaction between them. The Cu concentration in soil was only affected (P<0.05) by grazing, but not (P>0.05) by sampling depth or their interaction. The concentrations of Fe, Mn, Cu, and Zn in long-term moderately grazed pasture soil were 127.9, 194.8, 54.8, and 39,900% higher, respectively, than ungrazed pasture. Soil Fe, Mn, and Zn concentrations were significantly higher (P<0.05) in surface (0-10 cm) than subsurface (10-20 cm) soils. Results suggest that the excreta of grazing cattle can be an important source of heavy metals in intensively managed pastures in the long-term. However, metal concentrations were maintained within the normal range and were not high enough to be dangerous from the toxicological point of view.
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spelling upm-113262019-11-14T02:58:40Z http://psasir.upm.edu.my/id/eprint/11326/ How cattle grazing influences heavy metal concentrations in tropical pasture soils Ajorlo, Majid Abdullah, Ramdzani Mohd Hanif, Ahmad Husni Abd Halim, Mohd Ridzwan Yusoff, Mohd Kamil This study investigates the impact of short-term (1.5-year) heavy and long-term (33-year) moderate grazing intensities on the heavy metal concentrations in soils of tropical pastures. The concentration of heavy metals (Cd, Fe, Mn, Cu, Cr, Pb, and Zn) was determined in the Livestock Section of University Putra Malaysia, Selangor, Malaysia. The heavy metal concentrations in the soil were not affected (P>0.05) by shortterm heavy grazing intensity. The concentrations of Fe, Mn, and Zn were significantly affected (P≤0.05) by long-term moderate grazing or soil depth and by the interaction between them. The Cu concentration in soil was only affected (P<0.05) by grazing, but not (P>0.05) by sampling depth or their interaction. The concentrations of Fe, Mn, Cu, and Zn in long-term moderately grazed pasture soil were 127.9, 194.8, 54.8, and 39,900% higher, respectively, than ungrazed pasture. Soil Fe, Mn, and Zn concentrations were significantly higher (P<0.05) in surface (0-10 cm) than subsurface (10-20 cm) soils. Results suggest that the excreta of grazing cattle can be an important source of heavy metals in intensively managed pastures in the long-term. However, metal concentrations were maintained within the normal range and were not high enough to be dangerous from the toxicological point of view. HARD Publishing 2010 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/11326/1/11326.pdf Ajorlo, Majid and Abdullah, Ramdzani and Mohd Hanif, Ahmad Husni and Abd Halim, Mohd Ridzwan and Yusoff, Mohd Kamil (2010) How cattle grazing influences heavy metal concentrations in tropical pasture soils. Polish Journal of Environmental Studies, 19 (6). pp. 1369-1375. ISSN 1230-1485; ESSN: 2083-5906 http://www.pjoes.com/How-Cattle-Grazing-Influences-Heavy-Metal-r-nConcentrations-in-Tropical-Pasture-Soils,88518,0,2.html
spellingShingle Ajorlo, Majid
Abdullah, Ramdzani
Mohd Hanif, Ahmad Husni
Abd Halim, Mohd Ridzwan
Yusoff, Mohd Kamil
How cattle grazing influences heavy metal concentrations in tropical pasture soils
title How cattle grazing influences heavy metal concentrations in tropical pasture soils
title_full How cattle grazing influences heavy metal concentrations in tropical pasture soils
title_fullStr How cattle grazing influences heavy metal concentrations in tropical pasture soils
title_full_unstemmed How cattle grazing influences heavy metal concentrations in tropical pasture soils
title_short How cattle grazing influences heavy metal concentrations in tropical pasture soils
title_sort how cattle grazing influences heavy metal concentrations in tropical pasture soils
url http://psasir.upm.edu.my/id/eprint/11326/
http://psasir.upm.edu.my/id/eprint/11326/
http://psasir.upm.edu.my/id/eprint/11326/1/11326.pdf