Mortality of Eucalyptus at Haldwani (U.P.) and its Relation with Soil Iron

An investigation to study the probable causes of chlorosis in E. tereticornis revealed that a physiological disorder under specific environmental condition caused unavailability of soil iron. High level of phosphoras in the growth medium reduced the absorption and utilization of iron under slight alkaline-calcareous condition whichh also inhibited iron availability to the plants besides oxidising. It into less active ferric state and compounds of low biological activity resulting in disturbed metabolic activity of the plants.