GROWTH AND YIELD OF CABBAGE AS INFLUENCED BY DIFFERENT LEVELS OF BORON AND GIBBERELLIC ACID

Abstract

The experiment was carried out at the Horticultural Farm of Sher-e-Bangla Agricultural University, Dhaka during the period from October 2018 to March 2019 to evaluate the growth and yield of cabbage as influenced by different levels of boron and gibberellic acid (GA 3 ). The experiment comprised of two different factors such as, Factor A: four GA 3 levels viz. G 0 = Control (No GA 3 ii ), G 1 = 70 ppm GA 3 = 100 ppm GA 3 and G 3 = 130 ppm GA 3 and Factor B: three levels of boron application viz. B 0 = Control (No B), B 1 = 4 kg B ha -1 and B 2 = 8 kg B ha -1 . The experiment was set up in Randomized Complete Block Design with three replications. Regarding GA 3 application, the treatment G 2 (100 ppm GA 3 ) produced the highest marketable cabbage yield (44.13 t ha -1 ) and G 0 (No GA 3 ) produced the lowest (39.43 tha ). For boron (B) application, B 1 (4 kg B ha -1 ) gave the highest marketable cabbage yield (45.38 t ha -1 (100 ppm GA 3 ) B 0 (No B) produced the lowest (36.57 tha + 4 kg B ha -1 -1) . For combined effect, G 2 ) gave the highest marketable cabbage yield (47.71 t ha ) and the lowest (34.49 t ha -1 ) was from G 0 B 0 (No GA 3 + No B ha ). Considering economic analysis, G 2 B 1 -1 showed the highest gross return (Tk 572520), net return (Tk 392400) and BCR (3.18) whereas G 0 B 0 gave the lowest gross return (Tk. 413880), net return (Tk. 241841) and BCR (2.40). So, it can be concluded that 100 ppm GA 3

and 4 kg Boron is suitable for cabbage production compare to other treatment combinations.