Providing palm with all the necessary nutrients, insures a healthy growth and development of the tree. Palms that don’t get enough nutrients are more susceptible to diseases.
If the palm leaves have small yellow, orange or bronze spots that cover almost entire blade, it is a sign of potassium deficiency. Get some slow release potassium fertilizer and also similar magnesium fertilizer to avoid imbalance in the soil.
The leaves might appear to be stunted and deformed if there is a calcium deficiency. This problem is easily corrected with Calcium Nitrate.
Leaves could have yellow bands that run along the borders of the leaves if there is a magnesium deficiency. Use magnesium fertilizer spikes to correct the problem.
The sign of iron deficiency is leaves with thin green veins, green spotting and broken ends. This problem might be triggered by waterlogging because the palm was planted too deep. You can correct this problem temporary by applying iron fertilizer. To solve this problem permanently, you need to replant the palm.