questions: asking about the immature nut dropping and fertilizer doses  of coconut 
 answers: fertilizer doses for coconut=  urea-1.50kg
                                                                   ssp-2.50kg
                                                                    mop- 1.75kg
                                                                    borax-25 gm
fertilizer should be applied in two equal splits doses, april and october. should be applied in trench of 30cm width and 10cm depth at a distance of 1.75m away from plant in ring method.
for rotting problem of coconut , should apply bordeux mixture or sun bordo / easy bordo @ 2gm/ l of water , 3 spray at 5 days interval.
for ash gourd insect infestation= apply dursban 30ec @ 2ml/ l of water , 3 spray at 5 days interval.