Vol. 12, Issue 6 (2023)

Author(s):
Khan SM, DM Panchbhai, RP Gajbhiye, Seema Thakre, Shalini Badge and Dipali Chatse

Abstract:
The present study was carried out at Horticulture Section, College of Agriculture, Nagpur during 2020-21 and 2021-22 to assess the effect of foliar application of humic acid and gibberellic acid on growth and flowering parameters of summer African marigold (Tagetes erecta L.) The experiment was laid out in Factorial Randomized Block Design (FRBD) with three replications with two factors viz., Factor A consist of four levels of humic acid (i.e., Control, 0.2% humic acid, 0.4% humic acid and 0.6% humic acid) and factor B consist of five levels of gibberellic acid (i.e., 100 ppm, 200 ppm, 300 ppm, 400ppm and control). Growth attributes were determined as vegetative growth such as plant height, number of primary branches plant^-1, number of secondary branches plant^-1 and stem girth (mm). Flowering characters i.e., days to first flower bud initiation (days), days taken for opening of first flower (days), days to 50% flowering and duration of flowering. Results showed that humic acid and gibberellic acid recorded the best results of all studied characters, however, humic acid at 0.2% and gibberellic acid at 100 ppm achieved the highest mean values in all growth and flowering attributes as compared with the control treatment which gave the lowest mean values of all observed characters in African marigold.