The experiment was conducted during the year 2010-2011 in Horticulture College and Research Institute Dr. YSR Horticulture University, V.R.Gudem with spraying of zinc at different concentrations (2, 1.5 and 0 %) at different days after planting (4,6 and 8 weeks).The treatment 2 % zinc has significantly increased plant height, number of leaves, leaf length, leaf width and leaf area at 40, 60 and 80 DAP with highest values when sprayed at 6 weeks after planting compared to 4 and 8 after planting, minimum values were observed with control. Among the floral parameters, the treatment 2 % zinc recorded more number of days (97.63) to first floret appearance and 50 % flowering (103.32) over other treatments. Whereas, control recorded minimum number of days to first floret appearance and 50 % flowering. Similarly, the treatment 2% zinc recorded more number of spikes (1.33), spike length (112.19 cm), number of florets per spike and highest spike growth rate (0.68 cm/day). While the interaction of 2% zinc and 6 weeks after planting recorded maximum spike length (118.36 cm) and number of florets (13.40). The treatment 2 % zinc recorded maximum values for corm size (4.47cm), corm weight (37.97 g) number of cormels (32.90) and cormel weight per corm (10.72 g). In case of time of spraying, spraying at 6 weeks after planting recorded maximum values for corm size, corm weight, number of cormels and cormel weight while minimum values were observed in control. The maximum propagation coefficient was observed with 2% zinc (168.09) followed by 1.5 % zinc. Zinc sprayed at 6 weeks after planting recorded highest propagation coefficient (154.24) compared to 4 and 8 weeks after planting, while lowest propagation coefficient was recorded with control (127.81).