Iron Chlorosis

Iron Chlorosis is defined as a plant iron deficiency resulting in a reduced ability to produce chlorophyll, the green leaf pigment required for photosynthesis.  This micronutrient deficiency is exhibited in leaves that have yellow tissue with green veins.  In advanced cases, the tissue can die completely appearing brown and scorched.  Newer leaves at branch ends are most likely to be affected.  The condition is diagnosed by soil testing and plant symptoms.

The Colorado front range soils are alkaline and contain a less usable chemical iron than some other regional soils.  Certain tree species may have difficulty getting necessary micronutrients.  Silver maple, red maple, and certain oaks are more likely to be affected by iron chlorosis due to their high iron requirements.  Iron chlorosis may be exacerbated by poor availability of other minerals, particularly manganese.

Several treatments are possible to alleviate symptoms of iron chlorosis.  These include foliar sprays containing iron sulfate, application of iron chelates or iron sulfate to the host soil, or trunk injection of iron sulfate or ferric ammonium.  Walker Tree Care’s Plant Healthcare professionals possesses the necessary expertise, experience, and equipment to accurately diagnose and treat iron chlorosis.