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DOI	10.1007/s11368-019-02349-9
	Influence of soil water content and soil amendments on trace metal release and seedling growth in serpentine soil
	Gunarathne, Viraj 1; Rajakaruna, Nishanta 2,3; Gunarathne, Udaya 1; Biswas, Jayanta Kumar 4,5; Raposo, Zach A.2; Vithanage, Meththika 1
通讯作者	Vithanage, Meththika
来源期刊	JOURNAL OF SOILS AND SEDIMENTS
ISSN	1439-0108
EISSN	1614-7480
出版年	2019
卷号	19 期号:12 页码:3908-3921
英文摘要	Purpose This study was conducted to evaluate the synergistic effects of organic amendments and soil water status on trace metal release from serpentine soil. Materials and methods Two organic amendments, dendro-biochar (BC) and municipal solid waste compost (CM), were added to serpentine soil at four different ratios, specifically 2.5:0.0, 2.5:1.0, 2.5:2.5, and 2.5:5.0% (w/w). Along with the control (with no organic amendments), each soil treatment was incubated separately under saturated point (SP) and field capacity (FC) water content for 10 days. Subsamples were obtained from each treatment to analyze the bioavailable trace metal concentration and related edaphic parameters, namely total organic carbon (TOC), nitrate (NO3-), phosphate (PO43-), and cation exchange capacity (CEC). Then, the soil solution was eluded from each treatment and incubated for 10 days under permanent wilting point (PW). Furthermore, a seed germination test was performed under the different treatments. Results and discussion Significant reductions (p < 0.05) in bioavailable concentration of all four trace metals were observed in all the amendment ratios under all water status treatments (SP, FC, SP-PW, and FC-PW), compared with the control. Furthermore, FC-PW with the highest amendment ratio (2.5% BC:5.0% CM) reduced Ni by 67.6%; FC-PW with 2.5% BC + 2.5% CM immobilized Mn and Co by 92.1 and 96.9%, respectively, and SP water status with all four amendment ratios immobilized 100% of bioavailable Cr. Maximum amendment ratio under all four water status enhanced %TOC and significantly increased PO43- concentration in SP-PW. However, FC showed comparatively high NO3- concentration than other treatments. Germination index (GI) for mung beans and tomato did not show a significant difference in response to amendment ratios or soil water status; however, SP treatment expressed significantly high seedling vigor (SVI) for mung beans. Conclusions Treatments of BC and CM effectively immobilize the bioavailable fraction of trace metals in serpentine soils. Increasing amendment ratio increases the %TOC regardless of the soil water status, whereas SP-PW is favorable for the availability of PO43-, and FC is favorable for availability of NO3-. The GI for mung beans and tomato seed was not influenced by the soil water status nor by the amendment ratios. However, the SVI of mung bean seedlings was controlled by the soil water status.
英文关键词	Biochar Compost Serpentine Plant nutrients Remediation Soil water content Trace metals
类型	Article ; Proceedings Paper
语种	英语
国家	Sri Lanka ; USA ; South Africa ; India
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000505160200004
WOS关键词	ARID-ZONE SOILS ; LONG-TERM TRANSFORMATIONS ; HEAVY-METALS ; COMPOST AMENDMENTS ; BIOCHAR ; MOBILITY ; BIOAVAILABILITY ; REDISTRIBUTION ; MOISTURE ; COPPER
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311166
作者单位	1.Univ Sri Jayewardenepura, Fac Appl Sci, Ecosphere Resilience Res Ctr, Nugegoda, Sri Lanka; 2.Calif Polytech State Univ San Luis Obispo, Biol Sci Dept, San Luis Obispo, CA 93407 USA; 3.North West Univ, Unit Environm Sci & Management, Potchefstroom, South Africa; 4.Univ Kalyani, Dept Ecol Studies, Enviromicrobiol Ecotoxicol & Ecotechnol Res Lab, Kalyani 741235, W Bengal, India; 5.Univ Kalyani, Int Ctr Ecol Engn, Kalyani 741235, W Bengal, India
推荐引用方式 GB/T 7714	Gunarathne, Viraj,Rajakaruna, Nishanta,Gunarathne, Udaya,et al. Influence of soil water content and soil amendments on trace metal release and seedling growth in serpentine soil[J],2019,19(12):3908-3921.
APA	Gunarathne, Viraj,Rajakaruna, Nishanta,Gunarathne, Udaya,Biswas, Jayanta Kumar,Raposo, Zach A.,&Vithanage, Meththika.(2019).Influence of soil water content and soil amendments on trace metal release and seedling growth in serpentine soil.JOURNAL OF SOILS AND SEDIMENTS,19(12),3908-3921.
MLA	Gunarathne, Viraj,et al."Influence of soil water content and soil amendments on trace metal release and seedling growth in serpentine soil".JOURNAL OF SOILS AND SEDIMENTS 19.12(2019):3908-3921.