An experiment was conducted at the Horticulture Farm, Sher-e-Bangla Agricultural University, Dhaka, from October 2017 to February 2018. The experiment consisted of two factors, Factor A: Four levels of organic manures, viz. M0 = Control; M1 = Cowdung (35 t ha-1), M2 = Mustard oil cake (3.5 t ha-1) and M3 = Vermicompost. Factor B: Three application times, viz. T1 = 15 days before transplanting, T2 = Application at the time of transplanting and T3 = 15 days after transplanting. The experiment was laid out in a randomized complete block design (RCBD) with three replications. In the case of organic manure, the highest yield (38.70 t/ha) was found from M2 treatment, whereas the lowest yield (19.71t/ha) was recorded from M0 treatment. In the case of application time, the highest yield (31.83t/ha) was found from T1 treatment, whereas the lowest yield (28.10 t/ha) was recorded from T3 treatment. Due to combined effect maximum yield (38.704 t/ha) with net return (4,74,421tk) and BCR (2.20) was obtained from M2T1 treatment combination while the lowest yield (17.90 t/ha) with the lowest income (44,211 tk) and BCR (1.17) from M0T3 treatment combination. So, the economic analysis revealed that the M2T1 treatment combination appeared to be best for achieving the higher growth, yield and economic benefit of cauliflower.
A study was conducted at central farm of Sher-e-Bangla Agricultural university, Dhaka during the period of October, 2017 to March, 2018 to investigate the influence of starter solution and age of seedling on the growth and yield of broccoli. The experiment consisted of two factors. Factor A: Four levels of starter solution as S0= 0% urea solution (control), S1= 1% urea solution, S2= 2% urea solution, S3= 3% urea solution and Factor B: Three levels of age of seedling as A1= 20 days of seedling, A2= 30 days of seedling, A3= 40 days of seedling. Application of the treatment influenced independently and also in combination on the growth and yield of broccoli. In case of starter solution, the highest yield (24.32 t/ha) was obtained from S2 (2% urea) treatment, whereas the lowest yield (13.21 t/ha) was recorded from S0 (0% urea) treatment. For three level of age of seedling the highest yield (20.75 t/ha) was obtained from A2 (30 days old seedling) treatment and the lowest yield (15.48 t/ha) was recorded from A3 (40 days old seedling) treatment. In case of combined effect the highest yield (26.91 t/ha) of broccoli was obtained from the treatment combination of S2A2 while the lowest (13.41 t/ha) was obtained from S0A3 treatment combination. Economic analysis revealed that S2A2 treatment combination was the best in respect of net return (3,24,890 tk) with benefit cost ratio of 2.5. So it may be concluded that 2% starter solution and 30 days age seedling was best for growth and yield of broccoli.
A field research was conducted at the Horticultural Farm of Sher-e-Bangla Agricultural University, Dhaka-1207 during the period from October 2017 to March 2018 to study the effect of vermicompost and earthing upon growth and yield of onion. The experiment consists of two factors. Factor-A Vermicompost V0 (control), V1 (6 t ha-1 vermicompost), V2 (10 t ha-1 vermicompost) and V3 (14 t ha-1 vermicompost) and Factor-B Earthing up E0 (control), E1 (Two times earthing up) and E2 (Three times earthing up). The experiment was laid out in RCBD (Randomized Complete Block Design) with three replications. The collected data were statistically analyzed. Results revealed that in terms of vermicompost application The highest fresh weight bulb-1 (40.07 g), yield plot-1 (527.89 g) and yield ha-1 (5.39 t) were found from the treatment V3 compared to V0 (control) treatment. Again, in terms of different earthing up treatments, the highest fresh weight bulb-1 (32.48 g), yield plot-1 (431.67 g) and yield ha-1 (4.41 t) were found from the treatment E2 (Three times earthing up) compared to E0 (control) treatment. Both vermicompost and earthing up and their combination showed a considerable variation on different growth and yield parameters of onion. The highest fresh weight bulb-1 (42.73 g), yield plot-1 (567.33 g) and yield ha-1 (5.79 t) were found from the treatment combination of V3E2 compared to control V0E0 (control) treatment combination. And it may be summarized that 14 t/ha vermicompost with three times earthing up performed the maximum yield compared to other treatments.
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