EFFECT OF GA AND NITROGEN ON GROWTH, YIELD AND PROTEIN CONTENT OF MUNGBEAN

Abstract

An experiment was conducted at research field of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during the period from March to June, 2016 to find out the effect of GA and nitrogen (N) on growth, yield and protein content of mungbean. The experiment consisted of two factors: Factor A: Three levels of GA 3

viz.G 0 : control (no GA 3 ); G 1 : 50 ppm GA ii

3 ; G 2 : 100 ppm GA and Factor B: Four levels of nitrogen (N). viz.N 0 : Control (no urea), N 1 3 : 22 kg urea ha -1 : 44 kg urea ha -1 , N 3 : 66 kg urea ha -1 . There were 12 treatment combinations. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Data on different growth and yield contributing characters and yield were recorded to find out the optimum levels of GA 3 , N 2 and nitrogen (N) on mungbean production. Due to GA

application maximum number of pods plant -1 (107.52), seeds pod -1 (9.97), chlorophyll content (52.75 %), seed yield (2.16 t/ha), stover yield (1.05 t/ha), nitrogen content (4.11 %) and protein content (25.72 %) were recorded from G 1 (50 ppm GA ) treatment while minimum from G (control) treatment. Due to nitrogen application maximum number of pods plant -1 0 (108.94), seeds pod -1 (10.14), 1000 seed weight (47.22 g), seed yield (2.16 t/ha), stover yield (1.08 t/ha), nitrogen content (4.16 %), protein content (26.00 %) were observed from N 2 (44 kg urea ha -1 ) treatment while the minimum were observed from N (control) treatment. In the case of interaction effect maximum number of pods plant 0 -1 (132.27), seeds pod -1 (11.30), 1000 seed weight (47.92 g), seed yield (2.38 t/ha), stover yield (1.28 t/ha), nitrogen content (4.20 %) and protein content (26.25 %) were recorded from G 1 N 2 (50 ppm GA with 44 kg urea ha -1 ) treatment combination while the minimum from G 0 N 0 3 (control) treatment combination. The overall results suggest that 50 ppm GA 3 along with 44 kg urea ha

can be applied to obtain optimum mungbean yield, nitrogen and protein contents under the agro-climatic condition of SAU.