2023, Vol. 8, Special Issue 4

At CSAUAT, Kanpur (Uttar Pradesh), India, a study was conducted to determine the effect of foliar applications of boron, zinc, and gibberellic acid on fruit drop, yield, and quality parameters of Aonla (Emblica Officinalis) cv. NA-7 during the years, i.e., 2021, on plants that are 20 years old. Borax (0.2, 0.4, and 0.6%), ZnSO4 (0.1, 0.3, and.5%), and GA3 (20, 40, and 60 ppm), together with control, were the 10 treatments in the randomised block design experiment. Plants treated with borax at 0.6% showed significantly less fruit drop (67.45%), higher fruit retention (32.55%), and specific gravity (1.12 g/cm3). Maximum fruit length (3.70 cm), weight (28.28.90 g), volume (26.67 cc), and pulp weight (26.59 g) were recorded in fruits produced by plants treated with borax at 0.6%, while total sugar (12.06%), TSS (14.730Brix), fruit yield (80.50 kg/plant) and fruit content with higher moisture contents (93.45%) were recorded in fruits produced by plants treated with ZnSO4 at 0.3%. However, in the month of August in the northern plains of India, plants treated with ZnSO4 @ 0.3% produced fruits with the highest ascorbic acid concentrations (608.45 mg/100g pulp).