questions: asking about fruit fall of arecanut and wilting in betelvine 
 answers: recommended to apply borux @ 50gm per plant in ring form at the base of the plant
for betelvine spray bordeaux mixture ( 100gm lime + 100gm copper sulphate in 5l water separately well mixed. then mix the mixture in a third vessel simultaneously . spray the solution 6-8 times a day for 3 days )