Question: query regarding ganoderma wilt of arecanut. 
Answer: --please remove the dried leaf and spray or root feed with copper oxychloride 2.5 gram per liter of water or hexaconazole 5ml per liter of water 3 tiemes at 3 days interval. use fertilizer - urea 100gram, phosphorus 120 gram, potash 100 gram and borax 25 gram per plant in ring method15-20 cm depth and 60 cm away from the plant.