Influence of Vermicompost and Bio-fertilizers on Growth and Flowering of Tuberose (Polianthes tuberosa L.) cv. Prajwal

Abstract

The experiment was planned to sustainably improve the growth and yield of tuberose using bio-fertilizers and organic manures. performed in pots in completely randomized design (CRD) with 11 treatments having four replications to study the response of organic manures, chemical fertilizers and bio fertilizers on growth and flower yield of tuberose (Polianthes tuberosa L.) cv. Prajwal.  The treatment containing sand + vermicompost (4:1) + Bio-fertilizers (Azotobacter&Pseudomonas sp.) was significantly superior in terms of plant height (70.50 cm), length of leaf (36.98 cm), Number of leaf (25.67), spike length (66.58 cm), rachis length (27.23 cm), diameter of stem (1.096 cm), florets number per spike (35), number of opened florets per spike (33.67), spikes number per clump, spike weight (75.33 g), bulb number per clump (21), bulb diameter (1.20 cm), bulb weight (3.98 g). While lowest values of these parameters were observed in the control (sand). Minimum days taken to bulb sprouting (21.75 days), days taken to complete bulb sprouting (24.50 days), days taken to spike emergence (93 days) and days taken to opening of first floret (106.75 days) were observed   in sand + inorganic manures. Treatment having Sand + vermicompost (4:1) + Bio-fertilizers (Azotobacter&Pseudomonas sp. was observed best to promote growth and flowering of tuberose.