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Impacts of rapeseed dregs on Cd availability in contaminated acid soil and Cd translocation and accumulation in rice plants.
Environ Sci Pollut Res Int. 2016 Oct; 23(20):20853-20861.ES

Abstract

The objective of the present study was to investigate the effects of rapeseed dregs (RSD, a commonly organic fertilizer in rural China) at application rates of 0, 0.75, 1.5, and 3.0 % on Cd availability in soil and its accumulation in rice plants (Oryza sativa L., Xiangwanxian 12#, and Weiyou 46#) by means of a pot experiment. The results showed that application of RSD resulted in a sharp decrease in the soil TCLP-extractable Cd content. However, the soil TCLP-extractable Cd content in amended soil gradually increased during the rice growing period. Application of RSD significantly increased Cd transport from root to shoot and the amount of Cd accumulated in the aerial part. RSD was an effective organic additive for increasing rice grain yield, but total Cd content in rice grain was also increased. At an application rate of 1.5-3.0 % RSD, the total Cd content in Weiyou 46# brown rice was 0.27-0.31 mg kg-1, which exceeded the standard safe limit (0.2 mg kg-1) and was also higher than that of Xiangwanxian 12# (0.04-0.14 mg kg-1). Therefore, Weiyou 46# had a higher dietary risk than Xiangwanxian 12# with RSD application. We do not recommend planting Weiyou 46# and applying more than 0.75 % RSD in Cd-contaminated paddy fields.

Authors+Show Affiliations

College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China. College of Bioscience and Technology, Hunan Agricultural University, Changsha, 410128, China.College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.College of Bioscience and Technology, Hunan Agricultural University, Changsha, 410128, China. qrzeng@163.com. College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China. qrzeng@163.com.College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China. liaobh1020@163.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27480164

Citation

Yang, Wen-Tao, et al. "Impacts of Rapeseed Dregs On Cd Availability in Contaminated Acid Soil and Cd Translocation and Accumulation in Rice Plants." Environmental Science and Pollution Research International, vol. 23, no. 20, 2016, pp. 20853-20861.
Yang WT, Gu JF, Zou JL, et al. Impacts of rapeseed dregs on Cd availability in contaminated acid soil and Cd translocation and accumulation in rice plants. Environ Sci Pollut Res Int. 2016;23(20):20853-20861.
Yang, W. T., Gu, J. F., Zou, J. L., Zhou, H., Zeng, Q. R., & Liao, B. H. (2016). Impacts of rapeseed dregs on Cd availability in contaminated acid soil and Cd translocation and accumulation in rice plants. Environmental Science and Pollution Research International, 23(20), 20853-20861.
Yang WT, et al. Impacts of Rapeseed Dregs On Cd Availability in Contaminated Acid Soil and Cd Translocation and Accumulation in Rice Plants. Environ Sci Pollut Res Int. 2016;23(20):20853-20861. PubMed PMID: 27480164.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Impacts of rapeseed dregs on Cd availability in contaminated acid soil and Cd translocation and accumulation in rice plants. AU - Yang,Wen-Tao, AU - Gu,Jiao-Feng, AU - Zou,Jia-Ling, AU - Zhou,Hang, AU - Zeng,Qing-Ru, AU - Liao,Bo-Han, Y1 - 2016/08/02/ PY - 2016/04/22/received PY - 2016/07/25/accepted PY - 2016/8/3/pubmed PY - 2017/3/24/medline PY - 2016/8/3/entrez KW - Accumulated amount KW - Cd pollution KW - Rapeseed dregs KW - Rice grain yield KW - Translocation factor SP - 20853 EP - 20861 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 23 IS - 20 N2 - The objective of the present study was to investigate the effects of rapeseed dregs (RSD, a commonly organic fertilizer in rural China) at application rates of 0, 0.75, 1.5, and 3.0 % on Cd availability in soil and its accumulation in rice plants (Oryza sativa L., Xiangwanxian 12#, and Weiyou 46#) by means of a pot experiment. The results showed that application of RSD resulted in a sharp decrease in the soil TCLP-extractable Cd content. However, the soil TCLP-extractable Cd content in amended soil gradually increased during the rice growing period. Application of RSD significantly increased Cd transport from root to shoot and the amount of Cd accumulated in the aerial part. RSD was an effective organic additive for increasing rice grain yield, but total Cd content in rice grain was also increased. At an application rate of 1.5-3.0 % RSD, the total Cd content in Weiyou 46# brown rice was 0.27-0.31 mg kg-1, which exceeded the standard safe limit (0.2 mg kg-1) and was also higher than that of Xiangwanxian 12# (0.04-0.14 mg kg-1). Therefore, Weiyou 46# had a higher dietary risk than Xiangwanxian 12# with RSD application. We do not recommend planting Weiyou 46# and applying more than 0.75 % RSD in Cd-contaminated paddy fields. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/27480164/Impacts_of_rapeseed_dregs_on_Cd_availability_in_contaminated_acid_soil_and_Cd_translocation_and_accumulation_in_rice_plants_ DB - PRIME DP - Unbound Medicine ER -