questions: query about leaf blight and fertilizer doses of coconut tree. 
 answers: spray bordeaux mixture or blitox/ridomil gold @ 2ml/l of water for 3 times at 5 days interval.
fertilizer doses for 4 year plant- urea- 1.20kg, ssp- 1.80kg, mop- 1.25kg, borax- 25g-40g per plant in 2 splits at and interval of 6 months.
for more than 5 years plant- urea- 1.50kg, ssp- 2.50kg, mop- 1.75kg and borax- 25g to 40g per plant in 2 splits at and interval of 6 months.