A field experiment was conducted at the research field of the Department of Crop Science and Technology, University of Rajshahi, Rajshahi to evaluate the effect of spacing and nitrogenous fertilizer on the growth and yield attributes of cabbage. In the study, the cabbage (Brassica oleracea var. capitata L.) variety “BARI Badha kopi-2 (Agradut)” was cultivated during Rabi season (November 2023 to January 2024). The experiment consisted of three spacing i.e. 50cm×30cm, 50cm×40cm and 50cm×50cm as well as three levels of nitrogen fertilizers viz. 50kg/ha, 100kg/ha and 150kg/ha. The results revealed that different treatments significantly affected the growth and yield attributes of cabbage. The combination of wider spacing (50cm×50cm) with highest level of nitrogenous fertilizer (150kg/ha) produced the maximum plant height (40.57 cm), head diameter (23.83 cm), head thickness (15.89 cm), fresh head weight head (1.59 kg), yield per plot (39.92 kg) and yield (63.87 t/ha), whereas closer spacing (50cm×30cm) and lowest level of nitrogenous fertilizer (50kg/ha) required maximum days required to head formation (47.10) and head maturity (98.00). The study concluded that 50cm×50cm spacing and 150kg/ha nitrogenous fertilizer is to be needed for getting maximum yield from cabbage cultivation.
Key words: Spacing, nitrogenous fertilizer, growth and yield, cabbage.
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The experiment was carried out at the research field of the Department of Crop Science and Technology, Rajshahi University, Rajshahi during the period from October, 2023 to March, 2024. The aim of this research was to evaluate the excellent combination of these two parameters, as the nutrients and moisture are two major components that drastically affect mustard production. The experiment consisted of three levels of chemical fertilizers i.e. F1 (80-20-30 kg/ha NPK), F2 (90-30-40-25-1.0 kg/ha NPKSB), F3 (100-40-50-35-1.5 kg/ha NPKSB) and the three levels of irrigations viz. I0 (no irrigation), I1 (two irrigation at 20 and 50 DAS), I2 (three irrigation at 20, 40 and 50 DAS). BARI Sarisha-14 was used as test crop of this research. The most comprehensive combined treatment F3I2 resulted in the maximum observed values of plant such as plant height (83.67 cm), number of leaves per plant (19.33), number of branches per plant (10.00), minimum days to 50% flowering (35.00), minimum days to maturity (75.00), siliqua length (5.03), number of siliqua per plant (100.33), number of seeds per siliqua (25.33), 1000 seeds weight (3.79 gm). This treatment also resulted in highest seed yield (1.59 t/ha), indicating a robust growth response. In contrast, the lowest values of all plant characters and seed yield (1.44 t/ha) except days to 50% flowering and maturity under the combined treatment F1I0. However, application of three irrigations with 100-40-50-35-1.5 kg/ha NPKSB may be practiced for achieving higher seed yield of mustard (BARI Sarisha-14) in the northern part of Bangladesh.
Key words: Chemical fertilizer, irrigation, growth and yield, mustard.
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An experiment was conducted at Jute Agricultural Experimental Station, Bangladesh Jute Research Institute, Jagir, Manikganj to find out the fiber yield and yield attributes of some tossa jute varieties at varying sowing dates. Four tossa jute variety i.e., BJRI tossapat9, JRO-524, O-9897 and BJRI tossapat8 were used as treatment under two sowing dates i.e. 5th and 25th March. The experiment followed RCBD design with three replications. Results revealed that, the sowing date of 25th March produced the highest plant height (302.8cm), base diameter (16.71mm) and dry fiber weight per plant (14.84g). Among four tested varieties BJRI tossapat9 produced the highest amount of green plant weight with leaf, green plant weight without leaf and dry fiber weight per plant (224g, 198.5g, 16g, respectively). JRO-524 performed lower in most cases.
Key words: Jute, sowing date, variety, fiber yield
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An experiment was conducted at the research field of Sher-e-Bangla Agricultural University, Dhaka- 1207 to find out the biomass yield of different jute varieties at varying sowing dates. BJRI released two tossa jute variety i.e., BJRI tossapat8, BJRI tossapat9 along with popular Indian tossa jute variety i.e., JRO-524 were tested under three sowing dates i.e. 5th, 25th July and 15th August. The experiment followed RCBD design with three replications. Results revealed that, BJRI tossapat8 produced the highest amount of bark and stick weight both green and dry condition where BJRI tossapat9 produced the highest amount of root and leaf weight both conditions. JRO-524 performed lower at all cases.
Key words: Jute, biomass, variety, sowing date
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To observe the growth and yield attributes of mustard under different sowing date and irrigation frequency, a field experiment was conducted with mustard (Brassica sp.) var. “BARI Sarisha-14”. The experiment was carried out at the research field of the Department of Crop Science and Technology, Rajshahi University, Rajshahi during the period from October, 2023 to March, 2024. The experiment consisted of three sowing date i.e. 31st October, 10th November and 20th November as well as three irrigation frequency viz. no irrigation, 2 times irrigation and 3 times irrigation. The results revealed that different treatments significantly affected the growth and yield attributes of BARI Sarisha-14. The combination of 20th November sowing date (S3) and three times irrigation (I2) produced the maximum plant height, no. leaves per plant, no. of branches per plant, minimum days required to 50% flowering and maturity, pod length, no. of pods per plant, no. of seeds per plant, 1000 seeds weight and seed yield. On the other hand, all the studied parameters except days to 50% flowering and maturity found to be lowest in 31th October sowing (S1) date along with no irrigation (I0). Hence, the study concluded that 20th November sowing date (S3) and three times irrigation (I2) can be used for getting the targeted yield as well as desired return from BARI Sarishal-14 cultivation in “High Ganges River Floodplain zones” of Bangladesh.
Key words: Sowing date, irrigation, growth and yield, mustard.
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The success of Agrobacterium-mediated genetic transformation in deshi jute plants (Corchorus capsularis L.) depends on the selection of transformants. In the present research, the hygromycin sensitivity test was performed on wild-type seeds to obtain the most effective hygromycin concentration for selection of transgenic. Based on root growth, the most effective concentration of hygromycin was determined 25 mg/l. In this concentration of hygromycin, non-transgenic plants indicated no root elongation, as compared to transgenic plants. A clear decrease of root growth was optimized for the selection of transformants. Thus, for effective optimization and selection of transformants, we can make easy the laborious screening tasks in in planta transformation for further verification through polymerage chain reaction (PCR).
Key words: Hygromycin, selective marker, Agrobacterium tumefaciens, deshi jute.
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