Excess soluble salts Symptoms - Fronds are necrotic and have tip dieback and root systems have few active hair roots. Control - Arecas are more sensitive to excess soluble salts than most foliage plants. Fertilizer suggestions should be followed closely with soluble salts monitored regularly. Leaf chlorosis Symptoms - New leaves are light yellow with either interveinal or overall chlorosis and may be small with necrotic tips. The probable cause is micronutrient deficiency due to iron, manganese or zinc.
Iron deficiency causes interveinal to general chlorosis of newest leaves.
An indistinct interveinal chlorosis of new foliage occurs when manganese is deficient. When zinc is lacking, new leaves are small with necrotic tips. Poor or slow seed germination Symptoms - Seeds do not germinate properly. Control - Maintain proper soil moisture and temperature. Excess water will keep soil saturated and temperatures low and reduce or delay seed germination.