questions: query regarding plant protection in coconut. 
 answers: ramove the heavily affected leaves from the plants and then spray hexaconazole 10ml/liter of water or copper oxychloride (blitox-50) 3 gram/liter of water 3 times at 15 days interval in the affected plants. after this apply the recommended doses of fertilizer- urea 1200 gram, super 2 kg, potash-2kg, borax 50 gram and dry cowdung 25 kg per plant in 2 equal split dose once in the month of march/april and other in the month september/october.