Journal Of Applied Horticulture ISSN: 0972-1045


Bikash Das; Pandey, S N; Jindal, P C; Sureja, A K

Division of Fruits and Horticultural Technology, Indian Agricultural Research Institute, New Delhi, India.

Key words: crop quality, cyanamide, dormancy breaking, earliness, flowering, flowering date, forchlorfenuron, fruits, gibberellic acid, grapes, growth, plant growth regulators, ripening, ripening stage

Journal of Applied Horticulture, 2001, volume 3, issue 2, pages 105-107.

Abstract: The effects of Dormex (40% aqueous hydrogen cyanamide), CPPU [forchlorfenuron], and gibberellic acid (GA3) on the fruit growth and ripening of grape cv. Pusa Seedless were studied in New Delhi, India, in 1998. The treatments consisted of spraying plants with 1.5% Dormex solution immediately after pruning (T1); T1 + dipping of bunches in 0.15% CPPU solution after fruit set (T2); and T2 + dipping of bunches in 45 ppm GA3 at the full bloom stage. Fruits were sampled at weekly intervals from two weeks after flowering until harvest. Plants treated with Dormex exhibited earlier bud break (by 30 days), flowering (by 12 days), and ripening (by 7 days) than the control. Unlike in the control and Dormex-treated plants, fruit fresh weight in plants under T2 and T3 increased continuously until harvest. Ripening date did not significantly vary between the control plants and plants under T2 and T3; however, fruit growth period was longer in plants under T2 and T3 than in the control. Treated plants had higher fruit fresh w

Journal of Applied Horticulture