INFLUENCE OF PHOSPHORUS AND GA3 ON GROWTH AND FLOWERING OF COCKSCOMB

Abstract

The experiment was conducted at the Horticultural farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, during the period from October 2017 to February 2018. The experiment consisted of two factors. Factor A: Three levels of phosphorus i.e. P 0 : Control, P 1 : 60 and P 2

ha -1 , respectively and Factor B: Four levels of GA 3 i.e. G 0 : 0ppm, G 1 : 60ppm, G 2 : 110 ppm and G 3 : 160ppm GA 3 , respectively. The experiment was laid out in Randomized Complete Block Design with three replications. In the case of Phosphorus, the highest number of flowers (304,333 ha -1 ) were recorded from P 2 and the lowest number of flowers (252,833 ha _1 : 110 P 2 ) were recorded from P 0 . In the case of GA 3 , the highest number of flowers (353,111 ha _1 ) were noted from G 2 and the lowest (256, 222 ha -1 ) were recorded from G 0 . For combined effect the highest number of flowers (406,667 ha _1 ) were noted from P 1 and the lowest (207,333 ha _1 ) were recorded from P 0 G 0 . So, it may be concluded that 60 kg P 2 O 5 ha _1 with 110 ppm GA3 ha _1 was found suitable for growth and flowering of Cockscomb. G 2 O 5