The effect of foliar application of calcium chloride and nano-calcium chelated on vegetative, reproductive and post-harvest life of tuberose (Polianthes tuberosa L.)

In this study, the effect of calcium nutrition with two sources of calcium chloride and nano-calcium chelated on vegetative, reproductive and postharvest life of tuberose (Polianthes tuberosa L.) was investigated. The experiment was a completely randomized design with 5 treatments and 4 replications. Treatments included calcium chloride with two concentrations of 1.5 and 3%, nano-calcium chelated of 2 and 4 ml L-1 with control (distilled water). By planting of bulbs and reaching the plants to 10 to 12 leaves, the spray of two sources of calcium was started and repeated every 4 days to 5 times. The results showed that both calcium sources had positive effects on some of the properties mentioned in tuberose, and the effect of nano-calcium chelated was better in most traits than calcium chloride. The highest leaves fresh and dry weights, leaf area, fresh and dry weights of bulblets and root, and also leaf number, length, diameter, number of florets, fresh weight and postharvest life of flowering stem and were obtained with 4 ml L-1 nano-calcium chelated spraying. The fresh and dry weights of mother bulbs did not significantly affected by the nutrition of both sources of calcium and also the highest number of bulblets were observed in the control treatment (without calcium spraying).