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:The three varieties of custard apple were subjected to various preharvest chemicals and plant growth regulators treatments, viz., CaCl 2 @ 2 %, KNO 3 @ 2 %, GA 3 @ 50 mg/l, NAA @ 50 mg/l and no spray. Then mature, uniformed sizes fruit were harvested and observation were recorded under ambient storage condition. Balanagar recorded maximum fruit weight (180.32 g), volume (109.42 cc) and pulp weight per fruit (90.52 g) while minimum peel weight per fruit (53.87 g) and seed weight per fruit (10.43 g) recorded in Local variety at harvest. GA 3 @ 50 mg/l were found to best since they have maximum fruit weight (159.60 g), volume (96.85 cc) and pulp weight per fruit (79.54 g) at harvest. In case of fruit diameter (7.39 cm, 7.09 cm) in both factors were recorded maximum at 3 rd day of storage. CaCl 2 @ 2 % recorded minimum PLW (23.54 % at 6 th day) and spoilage percentage (32.22 %) and maximum fruit firmness (0.25 kg/cm 2 at 6 th day), shelf-life of fruits (7.25 days) and marketable fruit percentage (67.78 %) during storage. Thus, it can be inferred from the study that Balanagar variety and GA 3 @ 50 mg/l rated as most acceptable and superior, over all the other treatments in term of physical parameters and in term of quality and shelf-life CaCl 2 @ 2 % treatment observed during ambient storage.

The mango is considered as ‘king of fruits’ in India due to its delicious taste and nutritional status. Extension of fruit shelf life is a prime importance for availability of fresh fruit in market for longer duration and distance transportation. India is the largest producer and a prominent exporter of mango in the world.In this context, the study was conducted to evaluate the effect of preharvest spray of different chemicals and plant growth regulators (PGRs) on mango var. ‘Amrapali’ for shelf life and its quality. As ‘Amrapali’ has regular bearer with very good flavor and taste with a late maturing character, selected for shelf life studies. The fruits of mango weresprayed with chemicals viz. CaCl2 1%, CaCl2 2%, Ca(NO3)2 1%, Ca(NO3)2 2%, KNO3 1%, KNO3 2%, GA3 25 mg/l, GA3 50 mg/l, Ethrel 0.1 ml/l and Ethrel 0.2 ml/l prior to harvest. After harvesting, fruits were stored under ambient storage condition. Among all the treatments, GA3 25 mg/l treatment recorded significantly highest fruit length, fruit diameter, fruit volume and fruit weight at harvest and at fully ripe stage. Application of CaCl22% resulted in significantly minimum physiological loss in weight consistently from 2nd day to 16th day of storage besides significantly highest shelf life and quality. Hence, this intervention can contribute in preserving physical and chemical quality attributes for maximum acceptance by consumers.

:The present investigation on effect of preharvest application of different chemicals and plant growth regulators on biochemical parameters of mango (Mangifera indica L.) var. Amrapali was carried out during summer season of the year 2016 at Anand. The plants of mango were preharvest sprayed with CaCl 2 1 %, CaCl 2 2 %, Ca(NO 3 ) 2 1 %, Ca(NO 3 ) 2 2 %, KNO 3 1 %, KNO 3 2 %, GA 3 25 mg/l, GA 3 50 mg/l, ethrel 0.1 ml/l and ethrel 0.2 ml/l. There were eleven treatment embedded in Completely Randomized Design replicated thrice. Thirty three uniform size tree of mango were selected. Fresh and mature fruits were harvested from trees which was preharvest sprayed with different chemicals and plant growth regulators and stored under ambient storage condition. Among all the treatment CaCl 2 2 % recorded significantly highest total soluble solids, reducing sugar, total sugar, non-reducing sugar, ascorbic acid and minimum acidity consistently at harvest and every three days interval upto last ripening stage i.e.