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

Marigold (Tagetes spp.) is a traditional loose flower crop that is grown commercially in several parts of the world. Belongs to the family Asteraceae (Compositae). In Hindi, it is known as "Gainda.". Tagetes erecta L. and Tagetes patula L. are more typically grown for decorative purposes, whilst Tagetes minuta L. is grown for its high essential oil content. African marigold (Tagetes erecta L., 2n = 24) and French marigold (Tagetes patula L., 2n = 48) are the two most commonly grown kinds in India. The study was performed at Main Experimental Station Department of Floriculture and Landscape, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya 224229 (U.P.), India during the year 2019-20 and 2020-21on African marigold cv. Pusa Narangi Gainda in which combinations were used with Bio-inoculant (Azotobacter) and Gibberellic Acid. The result suggest that the longest vase life of marigold flower was recorded with the application of azotobacter by soil treatment @ 4 l/ha + 200ppm GA 3 at 30 DAT whereas minimum vase life was noted with control along with the highest benefit: cost ratio was obtained with application of azotobacter by soil treatment @ 4 l/ha + 200 ppm GA 3 at 30 DAT however, minimum benefit: cost ratio was calculated in control.