Question: query regarding management of leaf blight in coconut..
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Answer:  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 30 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