Use of 1,10-phenanthroline in estimating metabolically active iron in plants
If calcifuges are forced to grow on a calcareous soil, they usually develop chlorosis. However, total leaf iron (Fe) does not often correlate well with Fe deficiency symptoms. The extraction of 'active' Fe by 1 M HCl or Fe chelators, e.g., 1,10-phenanthroline, may reflect the relation between chlorosis and Fe-concentration in the leaves better than total Fe does. Extraction of 'active' Fe from lea
