Effect of foliar application of urea, borax and zinc on flowering, fruiting and fruit quality of Amrapali mango.
Umesh Rajak, Rupa Rani, Ravindra Kumar, Mandal B. K., Prasad K. K.
Author Affiliation: Department of Horticulture, Birsa Agricultural University, Ranchi 834 006, Jharkhand, India.
Environment and Ecology 28 : 1668-1671
Abstract : An experiment was conducted during 2004-2005 to study the effect of foliar application of urea (1.0, 1.5, 2.0, 2.5 and 3.0%), zinc sulfate (0.2, 0.4, 0.6, 0.8 and 1.0%) and borax (0.2, 0.4, 0.6, 0.8 and 1.0%) on flowering, fruiting and quality characters of Amrapali mango. Earliness in panicle emergence, hastening the days to more than 50% panicle initiation and minimum days to flower opening and fruit set were influenced appreciably by 1% borax spray compared to the other treatments and control (water spray). The maximum number of fruits (61.00) and yield of fruits (10.75 kg) per plant were achieved by urea 2.5% which was analogous to urea 2.0% spray. Among the treatments, 1% borax caused marked improvement in pulp percentage (76.33), total soluble solid (23.95°Brix) and Ascorbic acid content (39.39 mg/100 g pulp), while maximum response in reducing and non-reducing sugar were in the favor of zine sulfate 0.6% and borax 0.8% spray and minimum in control.