Foliar application of two silica sols reduced cadmium accumulation in rice grains

Chuanping Liu, Fangbai Li, Chunling Luo, Xinming Liu, Shihua Wang, Tongxu Liu, Xiangdong Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

121 Citations (Scopus)

Abstract

In the present study, pot experiments were conducted to investigate the effects of foliar application of two silica (Si) sols on the alleviation of cadmium (Cd) toxicity in contaminated soil to rice. Results showed that the foliar application of Si sols significantly increased the dry weight of grains (without husk) and shoots in rice grown in Cd contaminated soil, whereas the Cd concentration in the grains and shoots decreased obviously. The total accumulation of Cd in rice grains also decreased with the application of both of the Si sols, but no significant effect was found on the Cd accumulation in the shoots. For the optimal effect, Si-sol-B should be foliar applied at the tillering-stage during rice growth. The mechanism of Si foliar application to alleviate the toxicity and accumulation of Cd in grains of rice may be related to the probable Cd sequestration in the shoot cell walls.
Original languageEnglish
Pages (from-to)1466-1472
Number of pages7
JournalJournal of Hazardous Materials
Volume161
Issue number2-3
DOIs
Publication statusPublished - 30 Jan 2009

Keywords

  • Cd
  • Contaminated soil
  • Foliar application
  • Rice
  • Silica sol

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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