Release of potassium accompanying the dissolution of rice straw phytolith
Title: Release of potassium accompanying the dissolution of rice straw phytolith Authors: Nguyen, Minh Ngoc Dultz, Stefan Picardal, Flynn Keywords: Rice straw;;Phytolith;Silicon;Potassium Issue Date: 2015 Publisher: PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND Citation: ISIKNOWLEDGE Abstract: In rice, Si assimilated from the soil solution is deposited in inter- and intracellular spaces throughout the leaf and stems to form silicified structures (so-called phytoliths). Because K is also present in significant concentrations in rice stems and leaves, the question arises if K is immobilized in the mineralized silica during the precipitation of Si. This work determined whether desilification of the phytolith is a factor regulating K release by implementing batch experiments. Solubility of Si and K of the rice straw heated at different temperatures were examined to identify effect of...