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Effectiveness of simultaneous applications of lime and zinc/iron foliar sprays to minimize cadmium accumulation in rice.
Ecotoxicol Environ Saf. 2018 Dec 15; 165:510-515.EE

Abstract

Due to the large area of Cd-contaminated paddy soils worldwide, low-cost measures to reduce the accumulation of Cd in rice plant are necessary. A field experiment was therefore conducted to investigate the reducing effect of lime combined with foliar applications of Zn (ZnSO4) or Fe (EDTA·Na2Fe) on Cd concentrations in brown rice on a Cd-contaminated paddy soil. The results indicated that liming alone or in combination with foliar sprays of Zn or Fe increased the soil pH by 0.27-0.63 units. However, limited effects of lime or lime combined with foliar applications of Zn/Fe on soil DTPA-extractable Cd, rice grain and rice straw biomass were observed. Liming alone significantly reduced the Cd concentration in brown rice and rice straw by 31.8% and 42.3%, respectively. The Cd concentrations in brown rice decreased by 25.5% and 65.4% and in rice straw by 53.0% and 68.1% after liming combined with foliar applications of Fe and Zn, respectively. In contrast, liming combined with foliar spraying of Fe significantly increased the transfer ratio of Cd from the rice straw to the grain. As a low-cost technique, lime application combined with foliar application of ZnSO4 could be recommended for the remediation of Cd-contaminated paddy soils.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Duan MM
Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Wang S
Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.
Huang DY
Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China; Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha, Hunan, China.
Zhu QH
Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China; Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha, Hunan, China. Electronic address: qhzhu@isa.ac.cn.
Liu SL
Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.
Zhang Q
Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.
Zhu HH
Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.
Xu C
Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.

MeSH

AgricultureAnalysis of VarianceBiomassCadmiumCalcium CompoundsEdible GrainEnvironmental Restoration and RemediationIronOryzaOxidesSoilSoil PollutantsZincZinc Sulfate

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30223163

Citation

Duan, Ming-Meng, et al. "Effectiveness of Simultaneous Applications of Lime and Zinc/iron Foliar Sprays to Minimize Cadmium Accumulation in Rice." Ecotoxicology and Environmental Safety, vol. 165, 2018, pp. 510-515.
Duan MM, Wang S, Huang DY, et al. Effectiveness of simultaneous applications of lime and zinc/iron foliar sprays to minimize cadmium accumulation in rice. Ecotoxicol Environ Saf. 2018;165:510-515.
Duan, M. M., Wang, S., Huang, D. Y., Zhu, Q. H., Liu, S. L., Zhang, Q., Zhu, H. H., & Xu, C. (2018). Effectiveness of simultaneous applications of lime and zinc/iron foliar sprays to minimize cadmium accumulation in rice. Ecotoxicology and Environmental Safety, 165, 510-515. https://doi.org/10.1016/j.ecoenv.2018.09.037
Duan MM, et al. Effectiveness of Simultaneous Applications of Lime and Zinc/iron Foliar Sprays to Minimize Cadmium Accumulation in Rice. Ecotoxicol Environ Saf. 2018 Dec 15;165:510-515. PubMed PMID: 30223163.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effectiveness of simultaneous applications of lime and zinc/iron foliar sprays to minimize cadmium accumulation in rice. AU - Duan,Ming-Meng, AU - Wang,Shuai, AU - Huang,Dao-You, AU - Zhu,Qi-Hong, AU - Liu,Shou-Long, AU - Zhang,Quan, AU - Zhu,Han-Hua, AU - Xu,Chao, Y1 - 2018/09/14/ PY - 2018/06/11/received PY - 2018/09/05/revised PY - 2018/09/06/accepted PY - 2018/9/18/pubmed PY - 2018/12/20/medline PY - 2018/9/18/entrez KW - Cadmium KW - Foliar application KW - Iron KW - Liming KW - Rice KW - Zinc SP - 510 EP - 515 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 165 N2 - Due to the large area of Cd-contaminated paddy soils worldwide, low-cost measures to reduce the accumulation of Cd in rice plant are necessary. A field experiment was therefore conducted to investigate the reducing effect of lime combined with foliar applications of Zn (ZnSO4) or Fe (EDTA·Na2Fe) on Cd concentrations in brown rice on a Cd-contaminated paddy soil. The results indicated that liming alone or in combination with foliar sprays of Zn or Fe increased the soil pH by 0.27-0.63 units. However, limited effects of lime or lime combined with foliar applications of Zn/Fe on soil DTPA-extractable Cd, rice grain and rice straw biomass were observed. Liming alone significantly reduced the Cd concentration in brown rice and rice straw by 31.8% and 42.3%, respectively. The Cd concentrations in brown rice decreased by 25.5% and 65.4% and in rice straw by 53.0% and 68.1% after liming combined with foliar applications of Fe and Zn, respectively. In contrast, liming combined with foliar spraying of Fe significantly increased the transfer ratio of Cd from the rice straw to the grain. As a low-cost technique, lime application combined with foliar application of ZnSO4 could be recommended for the remediation of Cd-contaminated paddy soils. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/30223163/Effectiveness_of_simultaneous_applications_of_lime_and_zinc/iron_foliar_sprays_to_minimize_cadmium_accumulation_in_rice_ DB - PRIME DP - Unbound Medicine ER -