Influence of essential heavy metals on vegetative growth of tuberose cv. Prajwal

An experiment was conducted with 3 essential heavy metals viz., MnSO4, CuSO4, and ZnSO4 with three different concentrations i.e., MnSO4 @ 1000, 2000 and 3000 mg kg-1 soil, CuSO4 @ 100, 200 and 300 mg kg-1 soil, ZnSO4 @ 200, 400 and 600 mg kg-1 soil in addition with no application of nutrients and treated as Control. The experiment was carried out in polybag culture method and conducted with a Completely Randomized Design using three replications. Data recorded on vegetative growth parameters of tuberose cv. ‘Prajwal’ were analyzed using OPSTAT software and least significant difference was used to differentiate the treatments. Analysis of results indicated that soil application of ZnSO4 @ 400 mg kg-1 soil recorded a significant improvement in many of the vegetative growth parameters viz., plant height (47.03 cm and 48.78 cm respectively during 2018-19 and the pooled data analysis), number of leaves per plant (53.60 and 54.91 respectively during 2018-19 and the pooled data analysis), plant spread (1466.26 cm2, 1742.23 cm2 and 1604.24 cm2 respectively during 2018-19, 2019-20 and the pooled data analysis) at 360 days after planting (DAP) interval.