Question: asking about the control measure to control fruit drop problem of coconut.
Answer: suggested to apply recommended fertilizer dose like-urea@1.5 kilogram/plant,ssp@2.5 kilogram/plant,mop@1.75 kilogram/plant,borax@25 gram/plant.fertilizer should be applied  in two equal split doses twice in a year to a trench of 30cm. width,10-15 15cm.depth at a radius of 1-175 meter away from the trunk.