Effect of urea and growth substances on yield and physico-chemical characteristics of mango.
Kumari Karuna, Abhay Mankar, Jayant Singh
Author Affiliation: Department of Horticulture (Fruit & Fruit Technology), Bihar Agricultural College, Sabour, Bhagalpur - 813 210, India.
Horticultural Journal 18 : 131-133
Abstract : Experiments were conducted during 2001/02 and 2002/03 in Sabour, Bihar, India to evaluate the effects of urea (2%), NAA (50 and 100 ppm), ethrel [ethephon] (100 and 200 ppm) and paclobutrazol (5, 7.5 and 10 g a.i.), alone or in combination, on the yield and physico-chemical characteristics of fruits of mango cv. Langra. Paclobutrazol was applied as soil drench only once in September during both years, whereas the other chemicals were applied as foliar spray twice in a year (once in the first week of September and another in October). Fruit yield and physico-chemical characteristics (size, weight, volume, specific gravity, pulp percentage, stone percentage, peel percentage, total soluble solids, titratable acidity, ascorbic acid, total reducing and nonreducing sugar) were recorded at harvest and edible ripe stages. All treated plants exhibited better performance compared to the control (water spray). Plants treated with paclobutrazol at 7.5 g a.i. produced the highest number of fruits (227.56). All paclobutrazol and ethrel treatments increased fruit size. Total soluble solids, sugar and ascorbic acid contents increased, while titratable acidity decreased, in fruits of treated mango plants.