Effect Of Pre-Harvest Application Of Gibberellic Acid, NAA, And Calcium Nitrate On Fruitdrop, Maturity And Storage Quality of Kinnow Mandarin

or studying the effect of pre-harvest application of Gibberellic acid, NAA, and Calcium nitrate on fruit drop, maturity and storage quality of Kinnowmandarin the present experiment was conducted. Two sprays of these plant bio-regulators and nutrient were done on 15th of September and November, 2011.From various observations recorded, it was noted that the foliar application of Gibberellic acid 100 ppm, NAA 20 ppm significantly reduced fruit drop (16.80%and 14.28%) and calcium nitrate at 2.0 per cent (23.28%) was recorded. Higher level of Gibberellic acid 100 ppm and calcium nitrate at 2.0 per cent delayedmaturity by (296.95 and 293.58 days). Harvested fruits were stored up to different days at ambient temperature in 100 gauge polythene bags. It wasrecorded that the calcium nitrate at 2.0 and 1.5 per cent and NAA 20 ppm prove more effective in minimizing the loss of fruit spoilage, fruit weight, fruit juice,ascorbic acid, TSS and total sugars