Agronomic Management and Rice Varieties Controlling Cd Bioaccumulation in Rice

Liangmei Chen, Wenge Wu, Fengxiang Han, Jiangxia Li, Wenling Ye, Huanhuan Fu, Yonghua Yan, Youhua Ma and Qiang Wang
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Liangmei Chen: College of Resources and Environmental Sciences, Anhui Agriculture University, Hefei 230001, China
Wenge Wu: Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China
Fengxiang Han: Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39056, USA
Jiangxia Li: College of Resources and Environmental Sciences, Anhui Agriculture University, Hefei 230001, China
Wenling Ye: College of Resources and Environmental Sciences, Anhui Agriculture University, Hefei 230001, China
Huanhuan Fu: College of Resources and Environmental Sciences, Anhui Agriculture University, Hefei 230001, China
Yonghua Yan: Department of Math, Jackson State University, Jackson, MS 39056, USA
Youhua Ma: College of Resources and Environmental Sciences, Anhui Agriculture University, Hefei 230001, China
Qiang Wang: College of Resources and Environmental Sciences, Anhui Agriculture University, Hefei 230001, China

IJERPH, 2019, vol. 16, issue 13, 1-16

Abstract: Selection of rice varieties and application of amendments are effective measures to ensure food safety. Here we report that in the non-Cd area, the grain quality of all rice varieties met the Chinese National Grain Safety Standards (CNGSS). In the high-Cd area, rice varieties showed significant different bioaccumulation of Cd with lower rice yields than those in non-Cd area with the average decrease of 31.1%. There was a negative correlation between grain Cd content and yields. A total of 19 rice varieties were selected as low Cd accumulating rice varieties and their Cd content met CNGSS in the low-Cd area. Six of them met CNGSS in the high-Cd area. The application of amendments significantly reduced Cd content in rice grains by 1.0–84.7% with an average of 52.6% and 13 of varieties met CNGSS. The amendments reduced available Cd content in soils by 1.1–75.8% but had no significant effects on rice yields. Therefore, the current study implied that proper agronomic management with selection of rice varieties and soil amendments was essential in controlling Cd accumulation in rice grains.

Keywords: rice; varieties; Cd; biological organic fertilizers; lime; porous ceramic nanomaterials (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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