Cow manure and cow manure-derived biochar application as a soil amendment for reducing cadmium availability and accumulation by Brassica chinensis L. in acidic red soil

Journal of Integrative Agriculture

Xiao-qiang CUI¹  Lin TANG²  Xiao-e YANG²  Ying FENG²  Feng-shan PAN²  Yasmin Khan Kiran²  Ali Barkat³ 

[1] National Agricultural Research Centre, Islamabad 45500, Pakistan;Key Laboratory of Environmental Remediation and Ecological Health/Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, P.R. China;State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, P.R. China;

关键词: Brassica chinensis;    biochar;    cow manure;    red soil;    phytostabilization;    trace metals;   

DOI  :  

来源: DOAJ

【 摘 要 】

Organic amendment is a promising, in situ phytostabilization approach to alleviate the phytotoxic effects of heavy metal contaminated soils. The aim of this study was to evaluate the feasibility of cow manure (CM) and its derived biochar (CMB) as a soil amendment on cadmium (Cd) availability and accumulation in low and high Cd-accumulating cultivars of Brassica chinensis L. grown in an acidic red soil. CM and CMB were applied to Cd-contaminated acidic red soil at the rates of 0, 3.0 and 6.0% (w/w). Application of CMB was significantly more effective than that of CM, as it reduced the availability of Cd in soil by 34.3-69.9% and its bioaccumulation in the low Cd accumulator, Aijiaoheiye 333, by 51.2 and 67.4%, respectively. The addition of CMB significantly increased the extractability and accumulation of trace metals (Zn, Mn, Fe, and Cu) by plants and improved plant biomass production. CMB application, combined with utilizing low Cd accumulating cultivars represents a new, sustainable strategy to alleviate the toxic effects on Cd and improve food safety.

【 授权许可】

Unknown