questions: asking about control of diseases in arecanut 
 answers: red palm weevil and mealy bug: spray endosulfan 35 ec @ 1 m/lit.pour monocrotophos 2ml/lt. in the trunk cavity and plug with mud.
stem bleeding: scrape out the infected portion completely and apply bordeaux paste or coal tar. chiselling out of the infected portions followed by wound dressing with carbendazim (1 g/litre) and finally application of hot coal tar will manage the stem bleeding disease of arecanut
ganoderma disease: when disease symptoms are observed, isolate the diseased plant by digging a trench 60 cm deep, 30 cm wide and 1 m away from the trunk and drench the trench with captan 2 g/litre of water