JOURNAL OF APPLIED HORTICULTURE
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Journal of Applied Horticulture. 2003: 5(2): 112-113

Effect of GA, NAA and CCC on growth and flowering of French marigold (Tagetes patula)

Tripathi, A N; Tripathi, S N; Shukla, R K; Pandey, G

Department of Horticulture, Janta College, Bakewar (Etawah), U.P. 206 125, India.

A field trial was conducted during the winter season of 1998/99 in Etawah, Uttar Pradesh, India to determine the optimum concentration of naphthalene acetic acid (NAA), gibberellic acid (GA) and chlormequat (CCC) for application on French marigold. Spraying of NAA (50, 100 and 200 ppm), GA (100, 200 and 400 ppm) and CCC (200, 400 and 600 ppm) was done in February. Data were recorded for plant height, diameter of main stem, number of branches per plant, number of leaves per plant, days to first flowering, diameter of flowers, fresh weight of flowers, number of flowers per plant, and flower yield per plant. CCC and GA application gave quite beneficial effects on these parameters. GA at 400 ppm and CCC at 600 ppm recorded the highest flower yield per plant (127.71 g) and number of flowers per plant (78.83), respectively. These chemicals had no adverse effect on the growth and flowering of French marigold.

 

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