Answer: Aside from the spots on the leaves, it looks like a Manganese deficiency, which is most common on Roebelenii Palms. The common term for this deficiency is ?frizzle-top? and it is easily cured with a treatment of Manganese. The brown fungal spots are generally caused by overhead watering or by rainfall. Plant pathologist Elliott recommends restricting overhead watering and protecting the plants from rain water if possible. Increase air circulation by keeping the plants well-spaced to encourage ventilation. Hope this information helps!
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