Diagnosis & Symptoms:
Since chlorophyll is what causes the tree to be green, chlorotic trees will often show symptoms where the color of the tree is light green, yellow, reddish, and in severe cases white.
Manganese (Mn) and Iron (Fe) are often difficult to distinguish from each other without foliar chemical analysis. Some researchers suggest the fine veins will become chlorotic with Mn deficiency while they remain green on Fe deficient trees. In practice, this is difficult to determine in the field, so most Mn and Fe deficiencies are diagnosed by commonly affected species.
- Maples more frequently have Mn deficiency
- Birch and oak more frequently have Fe deficiency