Question: asking about the fertilizer dose of coconut tree. 
(20 years old).
Answer: advised him to apply urea 750 gm , 1250 gm ssp ,850 gm mop, borax 25 gm., compost 10 kg. per plant in a ring prepared at a distance of 1 metre away from the base of the plant. apply during march/april, september/october.