Vol. 12, Issue 9 (2023)

The field experiment on tuberose was conducted to find out the bio stimulant to increase the growth, yield and quality of Tuberose (Polianthes tuberosa. L) cv. Prajwal at Horticultural College and Research Institute, Periyakulam during the year 2019-2021. The field was laid out in Randomised Block Design with nine treatments and three replications. The treatments consists of foliar spray of panchagavya (3 per cent and 4 per cent), humic acid (0.2 percent and 0.4 percent), seaweed extract (1 percent and 2 percent) and fulvic acid (2 percent and 3 percent) with all treatments are combined with soil application of Azotobacter @ 3 ml/m², Phosphate solubilizing bacteria @ 3 ml/m², Potassium solubilizing bacteria @ 3ml /m² and Control (Without spray) + raising three rows of marigold. Finally it conclude that, 3 per cent panchagavya +Azotobacter @ 3 ml/m² + PSB @ 3 ml/m² + KSB @ 3 ml /m² (T₁) recorded highest plant height, no. of leaves, plant spread, spike length, lowest days taken for opening of first floret and highest no. of florets per spike, length of floret, length of spike and highest fresh weight of whole spike.