Effect of nutrients and biostimulants on growth and flowering of loose flowers of tuberose (Polianthes tuberosa L.) cv. Bidhan Rajini - 1

Abstract

The investigation on tuberose cv. Bidhan Rajini-1 were carried out at the Floriculture Research Station Rajendranagar, Hyderabad, to find out the effect of nutrients and biostimulants on tuberose with reference to growth attribute. The experiment was laid out in Randomized Block Design consisted of four biostimulants viz., Humic acid, Fulvic acid, Potassium humate, Arka Microbial Consortium in combination with nutrients. Various growth characters were recorded after planting. The experiment results showed that among the different treatments, application of 75% recommended doses of fertilizers (RDF) + Humic acid 12% (3ml/l) have shown significant effect on the vegetative growth parameters and maximum plant height and number of leaves, were recorded. In addition, this treatment has also resulted in early spike emergence (65days) and maximum spike length (83.56 cm), maximum chlorophyll content (58.66 Spad units) and promoted maximum duration of flowering (174.6 days) in tuberose cv. Bidhan Rajini-1. On the other hand, application of 100% RDF (200kgs each of NPK) resulted in maximum floret length (6.30cm) and floret diameter (5.28 cm).