Vol. 9, Special Issue 12, Part E (2025)

The present study was carried out to find out the “Studies on the effect of cycocel and bio-fertilizers on the vegetative growth, flowering attributes and flower yield of calendula (Calendula officinails L.)” during Rabi season 2023-24 at research field of Horticulture Farm in Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.). The experiment was laid out in Completely Randomized Design (CRD) with three replications. There was 15 treatments i.e. T₀ Control (water spray), T₁ CCC @ 500 ppm, T₂ CCC @ 750 ppm, T₃ CCC @ 1000 ppm, T₄ CCC @ 1500 ppm, T₅ Azotobacter + PSB (root dipping), T₆ Azospirillum + PSB (root dipping), T₇ Azotobacter + PSB followed by CCC @ 500 ppm, T₈ Azospirillum + PSB followed by CCC @ 500 ppm, T₉ Azotobacter +PSB followed by CCC @ 750 ppm, T₁₀ Azospirillum + PSB followed by CCC @ 750 ppm, T₁₁ Azotobacter + PSB followed by CCC @ 1000 ppm, T₁₂ Azospirillum + PSB followed by CCC @ 1000 ppm, T₁₃ Azotobacter + PSB followed by CCC @ 1500 ppm, T₁₄ Azospirillum + PSB followed by CCC @ 1500 ppm. The results of study revealed that the plant treated root dipping with Azotobacter + PSB followed by foliar CCC @ 1500 ppm (T₁₃) that i.e. appropriate for improving the most parameters such as, number of branches, plant spread, stem diameter, flower longevity, delaying flowering duration, number of flower plant^-1, flower yield plant^-1. Whereas treatment Azotobacter + PSB (T₅) resulted increasing plant height, early bud appearance, early full bloom of flower, minimum days taken for 50% flowering, maximum average weight of flower, maximum flower diameter, maximum length of longest root, maximum fresh weight of root and maximum dry weight of roots. While, treatment CCC @ 1500 ppm (T₄) gave significantly minimum plant height and length of shortest root.