RESPONSE OF QUALITY ATTRIBUTES OF LITCHI CV. DEHRADUN TO FOLIAR APPLICATION OF ZINC AND BORON

The influence of foliar application of zinc and boron on the fruit quality of litchi cv. Dehradun was conducted in the litchi orchard of Sh. S.S. Parmar Nangal, Pathankot and chemical analysis of the fruit was done in the laboratory of department of Horticulture, Khalsa College, Amritsar in the year 2015.Zinc sulphate and boron both was applied @ 0.3 %, 0.6% and 0.9% as foliar spray at pea stage (2nd fortnight of April) and at active growth stage (1st week of May) on the same trees. The results of the study indicated that the application of boron 0.9% resulted in maximum fruit volume (23.59 cc),specific gravity (1.02 g/cc), TSS (19.47%), TSS/acid ratio (57.39), reducing sugars(11.33%), total sugars (17.41%), maximum ascorbic acid (33.18 mg/100g)a while minimum acidity (0.33%) was observed in the plants under control.