Effect of nutrients on flowering and fruiting of mango cv. Dashehari.
Negi S. S., Singh A. K., Narayan Singh, Hariom Sah
Author Affiliation: Department of Horticulture, College of Agriculture, G.B. Pant University of Agriculture and Technology, Pantnagar - 263 145, U.S. Nagar, Uttarakhand, India.
Haryana Journal of Horticultural Sciences 40 : 69-71
Abstract : The present investigation was carried out at Horticulture Research Centre (HRC) Patharchatta, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, during the year 2008. The experiment was conducted on 12 year old mango cv. Dashehari in order to study the effect of nutrients on flowering and fruiting of fruit. Calcium nitrate (600 ppm), boric acid (200 ppm), zinc sulphate (200 ppm) and sorbitol (2000 ppm) alone and in combination were sprayed at the start of flowering. Results of the present study revealed that most of the treatments exhibited the improvement in pollen viability & germination, fruit set and yield of fruit. However, boric acid 200 ppm+sorbitol 2000 ppm proved to be most effective treatment in increasing pollen viability and germination (86.69% and 28.30%, respectively) as compared to control. The higher percentage of hermaphrodite flowers were recorded with the treatment of boric acid 200 ppm (20.37%) as compared to control (16.98%). Boric acid 200 ppm+sorbitol 2000 ppm gave higher fruit set (2.08 fruits per panicle and 0.48% on hermaphrodite flowers basis), least fruit drop (92.84%), maximum yield (59.76 Kg tree-1). The treatment of calcium nitrate 600 ppm+sorbitol 2000 ppm results maximum fruit weight, volume and length (188.33 g, 180.58 ml and 9.53 cm, respectively). Thus the combined application of boron (200 ppm) and sorbitol (2000 ppm) as a foliar spray at the start of flowering is the most effective treatment for increasing fruit set and yield in mango cv. Dashehari.