A field experiment was conducted in the semi-greenhouse at the Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh, during October 2019 to March 2020 to improve yield and quality of cherry tomato cultivation through stem pruning in hydroponic culture. The experiment consisted of three level of pruning viz. P0= No pruning; P1 = One time stem pruning and P2 = Two times stem pruning and four different cherry tomato varieties viz. V1= BARI Tomato-11; V2= BARI Tomato-20; V3= Red Star F1 and V4 = SAU Tomato-2. There were 12 treatment combinations and experiment were setup in two factors Completely Randomized Design (CRD) with three replications. For pruning, maximum fruit number per plant (263.33), fruit length (2.45 cm), fruit diameter (2.45 cm), highest single fruit weight (9.31 g), yield plant-1 (2.37 kg) and TSS (9.46 degrees Brix) were obtained from P2 treatment at 60 DAT. Similarly, in case of varieties, maximum fruit number per plant (257.82), fruit length (2.44 cm), diameter (2.01 cm), highest single fruit weight (8.50 g), yield per plant (2.63 kg) and TSS (8.92 degrees Brix) were obtained from V2 treatment at 60 DAT. In combined effect, maximum fruit number per plant (302.77), fruit length (2.60 cm), diameter (2.20 cm), highest single fruit weight (12.42 g), yield per plant (2.98 kg) and TSS (10.53 degrees Brix) were obtained from V2P2 treatment. Among the treatment combination, V2P2 (BARI Tomato-20 variety with two times stem pruning) treatment seemed to be more promising for obtaining higher yield of cherry tomato. Among the treatment combination, V2P2 (BARI Tomato-20 variety with two times stem pruning) treatment seemed to be more promising for obtaining higher yield and quality of cherry tomato.
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A field experiment was conducted in the semi-green house at the Horticulture Farm of Sher-e- Bangla Agricultural University, Dhaka 1207, Bangladesh, during October 2019 to March 2020 to improve yield and quality of cherry tomato cultivation through stem pruning in hydroponic culture. The experiment consisted of three level of pruning viz. P0= No pruning; P1 = One time stem pruning and P2 = Two times stem pruning and four different cherry tomato varieties viz. V1= BARI Tomato-11; V2= BARI Tomato-20; V3= Red Star F1 and V4 = SAU Tomato-2. There were 12 treatment combinations and experiment were setup in Completely Randomized Design (CRD) with three replications. In case of pruning, the highest plant height and branches number per plant were obtained from P2 treatment at 60 DAT, which enhanced the tomato yield. Similarly, the highest plant height and maximum branches number per plant were obtained from V2 treatment at 60 DAT, which also enhanced the tomato yield. The study noted that the maximum chlorophyll content was observed from P2 and V2, respectively. Considering combined effect, the maximum plant height, branches number per plant, chlorophyll content and yield per plant (2.98 kg) were obtained from V2P2 treatment. Among the treatment combination, V2P2 (BARI Tomato-20 variety with two stem pruning) treatment seemed to be more promising for obtaining higher growth and yield of cherry tomato.
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The article “Dust contamination situations at Dhaka Metropolitan city : sources, hazards, management and awareness” is an excellent contribution covering on more than 60 sources of dust contaminations at Dhaka Metropolitan city. Dusts, clay colloids, colloidal dusts, nano particles or particulate matters work as air pollutants containing hazardous and toxic chemicals and different heavy metals. From November 2024 to March 2025 there was no rainfall but plants of all categories were covered with 30-100% dust layers where transpiration was totally absent (blocked). Because of the huge dusts, Dhaka faced many days as one of the major air-polluted cities in the world. High air pollution caused various health hazards like cough, fever, mental disorders, heat diseases, allergy, headache, vomiting or vomiting tendency, pneumonia, diarrhea, skin diseases, sleepless nights, problems of visions, various eye diseases, running of nose-flow, ashma, diabates, blood pressures, cancer and even to death. Heavy metals also create a lot of diseases particularly As, Pb, Cr, Ni, Hg etc. Dust contaminations were found to be variable on the basis of 20 factors of varieties of land producing and movement of dust to the air. Through wide study and previous 3-4 related articles, a large number of air pollution management guidelines were established and also 30 basic new awareness universal slogans were developed for proper solving the air pollution and minimizing health hazards at Dhaka urban environment.
Key words: Air pollution, contamination, sources, heavy meal pollution, health hazards, management, awareness.
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An experiment was conducted on at Horticulture farm, Rajendupur, Gazipur, during May-August, 2023 to investigate the effect of biochar and vermicompost. In the study, V2B2 showed the plant height 12 cm on day 20, 40 cm on day 40 and 90 cm on day 60. V0B0 showed minimum plant height. Again number of leaves also recorded after 20 days, 40 after 60 days, where the maximum numbers of leaves of this experiment were in V2B2 . Among all the treatments V2B2 also produced the highest yields (43 t/ha) followed by V2B1 treatment (38 t/ha). The country V0B0 treatment produced the lowest total yield (23 t/ha) than those of other varieties. The findings of the experiment suggested that the overall best performance was obtained by the V2B2 treatment compared to eight other treatments for indian spinach cultivation in Bangladesh. Key words: Biochar, vermicompost, growth, yield, indian Spinach.
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The research aimed to investigate the impact of varying doses of vermicompost on the growth and productivity of okra (Abelmoschus esculentus). Study conducted over four months from March to August 2024 at the IUBAT Agricultural Research Station (IARS) in Rajendrapur, Gazipu. The experiment followed a Randomized Complete Block Design (RCBD) with four treatments (T0 = control, T1 = vermicompost 1 dose, T2 = vermicompost 2 doses, and T3 = vermicompost 3 doses) and three replications. Data were collected on morphological, phenological, and yield parameters, including plant height, number of flowers, fruit weight, and total yield. The findings revealed that the application of vermicompost had a significant positive influence on both the growth and yield of okra plants. The highest dose of vermicompost (T3) led to the best performance, with an increased plant height, no. of flowers, fruit number, and overall yield. Plants treated with T3 produced an average fruit yield of 15.6 tons per hectare, which was substantially higher than the control (T0). The intermediate treatments, T1 and T2, also showed improvements over the control but were outperformed by the highest dose. Hence, the results highlight the potential of organic manure as a sustainable alternative to chemical fertilizers, offering promising benefits for okra cultivation in sub-tropical climates of Bangladesh.
Key words: Vermicompost, sustainable agriculture, okra, growth, yield.
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An experiment was conducted in the laboratory of Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Cumilla during the period from August 2019 to October 2019 to investigate the effect of salt stress on the germination and seedling growth of eight mungbean genotypes. The treatments were salt levels of 0 (control), 8, 12, and 16 dS m-1 and the mungbean genotypes were BARI Mung-7, BARI Mung-8, BM´K1-11004-3, MMA-T-V07, BM´K1-112009, BM´K1-112002, SM-2-134 and MM-L1-V12. The experiment was laid out in a completely randomized design (CRD) with three replicates. The results indicated that salinity affected seed germination and seedling growth significantly, and among the salinity treatments only 8 dS m-1 salt stress-imposed seeds were germinated and survived for few days. On the other hand, the radicle and plumule were damaged to all the genotypes after germination when applied the salt by 12 and 16 dS m-1 . Germination percentage, relative water content, seedling vigor index and salt tolerant index were significantly influenced by imposition of salt stress in all genotypes. However, among the genotypes studied, MM-L1-V12 performed better and BARI Mung-8 showed highest sensitivity to salt stress. Key words: Saline regimes, germination, seedling growth, mungbean.
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