ROLE OF GIBBERELLIC ACID AND BORON ON GROWTH AND YIELD OF TOMATO(Solanwn Iycoperskwn L.)

Abstract

The field experiment was conducted at the Sher-e-Bangla Agricultural University Farm, Dhaka. Bangladesh from October 2011 to March, 2012 to evaluate the role of gibberellic acid and boron on growth and yield of tomato. Four dose of gibberilic acid, viz., No Gibberellie Acid (GA3). 10 ppm (GA3), 20 ppm (GA3) and 30 ppm (GA3) and three levels of boron. viz., no Boric Acid, 1.5625 Kg Boric Acid/ha and 3.125 Kg Boric Acid/ha were used to conduct this experiment. The experiment was laid out in Randomized complete Block Design (RCBD) having two factors and replicated three limes. The main effect of gibberilie acid indicated that, the plant height was influenced significantly by the gibberllic acid. The tallest plant, maximum number of leaves per plant, number of branches per plant, maximum number of flowers cluster per plant, number of flowers per cluster, number of flowers per plant were produced by 30 ppm gibberellic acid. The earliest of days of first flowering, earliest in 50% flowering, maximum number of fruits per cluster, number of fruit per plant, minimum percent of fruit dropping, earliest of days of first harvesting), the longest fruit length, largest fruit breath, largest individual fruit weight was observed in 20ppm gibberellic acid. The different gibberellic acid had significant effect on the yield of fruits per hectare. The maximum yield of fruits per hectare (68.00 tones) was obtained 20pprn gibberellic acid. The maximum growth and yield contributing character of tomato was observed in 3.125 Kg Boric Acid/ha. The highest yield of fruit (67.14 tlha) was obtained from 3.125 Kg Boric Acid/ha. The interaction between different gibberellic acid and boron was significantly influenced on the all growth and yield characters. The maximum growth and yield contributing character of tomato was observed in 20.00 ppm of gibberellic acid with 3.125 Kg boric acid per ha. The highest yield of fruits per hectare (78.56 tones) was obtained from 20 ppm GA3 with 3.125 Kg Boric Acid/ha.