Combined effect of organic acids and flavonoids on the mobilization of major and trace elements from soil

摘要: Combinations of different molecules usually co-exuded by plant roots in soil can significantly affect the mobilization mineral elements from soil. The flavonoids rutin and quercetin appeared to be highly efficient Fe Mn soil, being about 25 times more effective than citrate extracting an alkaline calcareous 15 mobilizing a slight acidic agricultural Quercetin was particularly 50 citrate. A significant synergistic effect detected when either or combined with citrate, extracting, respectively, 1.7 1.5 what is expected simple combination two. Sorption processes on particles were relevant for organic acids which microbial degradation often prevails, only exception oxalate. Citrate most acid major trace even if oxalate better extractant Cu, Zn, Ni In among observed while it Si. mechanism extracted reductive one, one molecule capable two atoms Fe. Also solubilize this element process. However, are complex-forming dissolution also occurs increases over rates.