Question: query related to nutrient deeficiency in lemon.
Answer: for lemon: apply urea 1300 g, super 2.5 kg, potash 1 kg, borax 50 gram and 20 kg cowdung per plant in 2 equal split dose once in the month of march/april and other in the month of september/october in ring method, 10-15 cm depth and  40-60 cm away from the plant. during flowering time spray one vitamin like- mohaphol/sagorika/biovita @ 2 ml/liter of water at 15 days interval in the evening time in the absence of rain.