Response of different dose of nitrogen strategies on morphology, yield and quality of mango (Mangifera indica L.) cv. Amrapali under high density planting

Abstract

The field study was conducted at Horticulture Garden, Bihar Agricultural College, Sabour during 2014-15 and 2015-16 to response of different dose of nitrogen strategies on phenology, yield and quality of mango (Mangifera indica L.) cv. Amrapali under high density planting (HDP). The experiment was laid out in factorial randomized block design with four levels of nitrogen (60g, 80g, 100g, and 120g/tree) treatments replicated thrice. The results obviously indicated that the every level of nitrogen significantly influenced the morphology, yield and quality of mango. Morphological parameter i.e. increase in tree height (29.22%), canopy spread (N-S 14.71%), canopy spread (E-W 13.42%), canopy volume (13.01%) and physical parameters of fruits like highest fruit length (10.35cm), fruit width (6.65cm), fruit weight (190.61g) and fruit volume (188.16cm3) were observed with the application of 120 g nitrogen per tree, while as regard with yield and quality parameters like maximum fruit set (17.06%), fruit retention (10.03%), minimum fruit drop (90.21%), pulp: peel ratio (4.38), pulp: stone ratio (4.49), pulp per cent (66.44%), fruit yield (11.29 kg/tree), TSS (23.30 0B), TSS/acidity ratio (147.44), total sugars (18.07%), total carotenoids content (18.46mg/100g pulp) ascorbic acid content (38.47 mg/100g pulp) and minimum acidity (0.164%) were noted with the application of 100g nitrogen per tree. On the other hand, lowest morphological, yield and quality parameters were reported with the application of nitrogen @ 60g/tree.