Browsing by Author "AKTER, TASLIMA"

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EFFECT OF GIBBERELLIC ACID AND SPACING ON GROWTH AND YIELD OF LETTUCE (Lactuca sativa L.)
(DEPT. OF HORTICULTURE, 2015) AKTER, TASLIMA
In the present study the effect of both Gibberellic Acid (GA ) and plant spacing on growth and yield of lettuce was examined at Horticulture Farm, Sher-e-Bangla Agricultural University, Dhaka during the period from October 2013 to January 2014. During cultivation, three levels of Gibberellic Acid (GA 3 ), (G 0 = 0 mg/L, G 1 3 =25 mg/L and G =50 mg/L) and four levels of plant spacing’s as S 1 = 15x20 cm, S 2 =20x25 cm, S 3 =25x25 cm, S 2 =25x30 cm were evaluated in Randomized Complete Block Design with three replications. In case of different factors the maximum gross fresh yield (29.05 t/ha) was recorded from G , whereas the minimum gross fresh yield (16.27 t/ha) was recorded from G 0 4 1 . The spacing of S recorded the maximum gross fresh yield (23.8 t/ha) due to highest fresh weight of plants, while the minimum gross fresh yield (14.82 t/ha) was obtained from the widest spacing’s S due to lowest number of plants at 45 DAS. In case of combined effect the highest gross fresh yield (27.73 t/ha) was obtained from G 1 S where as the lowest gross fresh yield (16.27 t/ha) was recorded from G 0 S 4 3 . Cost benefit analysis indicate that the highest benefit ratio (2.04) was obtained from G 1 S 3 , where as the lowest benefit ratio (1.16) was obtained from G . On the basis of overall effect and economic analysis it can be concluded that GA concentration (25 mg/L) and plant spacing (25x25 cm) on growth and yield proved to be the most promising 3 for getting optimum yield in lettuce and it is apparent that it was suitable for lettuce 0 3 S 4 1
EFFECT OF ORGANIC AND INORGANIC FERTILIZERS ON THE GROWTH AND YIELD OF BROCCOLI (Brassica oleracea var. italica L)
(DEPARTMENT OF HORTICULTURE, 2021) AKTER, TASLIMA
A field experiment was conducted at the Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh, during November 2021 to March 2022 to find out the effect of organic and inorganic fertilizer managements for the growth and yield of broccoli (Brassica oleracea var. italica). The experiment comprised 9 different treatments of organic and inorganic fertilizer and their combination viz., T 0 : Control (without fertilizer); T 1 : Cow dung (CD) @ 15 ton/ha; T 2 : Recommend fertilizer dose @ CD 10 t N 150 kg P 150 : Vermicompost @ 10 ton/ha and Trichoderma @ 22 kg/ha; T 4 : Vermicompost @ 10 ton/ha and biochar 150 kg/ha; T 5 : Kitchen compost @ 8 ton/ha; T 6 kg K 120 kg/ha : Mushroom compost @ 5 ton/ha; T 7 : Vermicompost (50%) + Cowdung (50%) and T 8 : Mushroom Spent compost @ 5 ton/ha (60%) + Vermicompost (20%) + Trichoderma (20%) and experiment was setup in Randomized Complete Block Design (RCBD) with three replications. A positive impact of each fertilizer was observed on vegetative growth and yield of the crop. Early curd initiation (44.33 days after transplanting), maximum curd diameter (13.58 cm), maximum weight of primary curd (344.2 g), maximum number of secondary curd (6.67), maximum weight of secondary curd (210 g), maximum dry matter content (9.86%) of curd, highest yield plant -1 (550 g), yield plot -1 (4.95 kg) and yield ha (26.76 t) were found from T 2 treatment, while the control treatment gave the lowest. The highest benefit cost ratio (3.40) was noted from T 2 and the lowest (1.21) from T 4 . Considering the differences between different organic fertilizers with the recommended dose, the lowest differences of plant height (1.57 cm) at 60 DAT, diameter (0.33 cm) of primary curd, weight (26.1 g) of primary curd, per plant yield (21.9 g) and yield (1.07 t/ha) of broccoli over the recommended dose was observed in T 8 treatment. Considering the sustainable yield, application of recommend fertilizer dose @ CD 10 kg/ha seemed to be more promising for broccoli cultivation and among the organic fertilizers, the combination Mushroom Spent compost @ 5 ton/ha (60%) + Vermicompost (20%) + Trichoderma (20%) was best in respect of plant growth and yield.
EFFECT OF SEED SIZE AND SPACING ON GROWTH AND YIELD OF MUNGBEAN
(DEPARTMENT OF AGRONOMY, 2015-06) AKTER, TASLIMA
An experiment was conducted at the Agronomy field, Sher-e-Bangla Agricultural University, Dhaka, during March to May, 2014 to study the effect of seed size and spacing on the growth and yield of mungbean. The experiment was consisted of three seed sizes; viz., small (3.2mm), medium (3.2 mm to 4mm) and large ( >4mm) and four row spacings (20cm, 25cm, 30cm and 35cm). The experiment was laid out in Randomized Complete Block Design (RCBD) (factorial) with three replications. The results showed that growth, yield and yield attributes of mungbean significantly influenced by seed sizes, spacings and their combinations. At harvest, medium seed sized gave the longest plant height (44.8 cm), maximum number of leaves plant (10.0), the highest leaf dry weight plant -1 (7.6g), flower and pod dry weight plant -1 (3.4g), total plant dry weight (15.5g), biological yield plant (3.0g), harvest index (0.38) and seed yield (1.58t ha gave the highest seed yield (1.57t ha -1 -1 -1 ). The plant of 30cm spacing ), biological yield (3.8 t ha index (0.39). The combined effect of medium seed size (3.2-4mm) and sowing at 30 cm spacing showed maximum grain yield (2.4 t ha ) with higher value of harvest index (40.00%). -1 -1 ), harvest -1
RESOURCE EXPLOITATION AND ENVIRONMENTAL CRISIS: AN ETHICAL ANALYSIS
(©University of Dhaka, 2024-04-30) AKTER, TASLIMA
Scientists, ecologists, economists and environmentalists have presented a scenario that suggests not just the existence of humans, but the planet itself, is moving toward an uncertain future. One primary reason for this dire situation is the overexploitation of natural resources and ensuing environmental crises.Environmental ethics, a branch of applied philosophy, addresses contemporary environmental challenges such as deforestation, climate change, ozone layer depletion, loss of biodiversity, pollution, and overconsumption of natural resources. While science and technology play crucial roles in addressing these challenges, they are paradoxically contributors to the environmental issues stemming from overexploitation of resources. Hence, alongside experts from other domains, the perspectives and ideas of philosophers can offer valuable insights to policymakers and leaders. There exists a gap between values and the practical implementation of these values. In this thesis, I encourage individuals to adopt an ethical lens when considering our planet Earth, emphasizing the importance of valuing nature and respecting all its inhabitants. Many are aware of what ought to be done, yet they act according to their desires, often in the face of known consequences. Influenced by consumerist advertisements, humans overexploit natural resources to satisfy their desires, neglecting the needs of non-human entities. It's indisputable that natural resources are vital for industrial production and economic growth. While resources are essential for our basic needs, they are finite and insufficient for the insatiable desires of humanity. Furthermore, the non-human components of our ecosystem rely heavily on these resources. Unsustainable consumption threatens the ecosystem, and by extension, our own survival. Our existence owes much to our forebears. What we are today reflects the actions, values, morals, and beliefs of our ancestors. Just as we remember them, future generations will judge ii us by our actions. Our deeds today will determine the esteem or disdain with which we are remembered. For a prosperous and fulfilling life, humans need a healthy environment and adequate resources. It's not only our responsibility to ensure a liveable planet for future generations but also their inherent right. In this thesis, I delve into the circumstances, factors, and consequences of resource exploitation and environmental crises. I have scrutinized foundational ethical theories relevant to environmental concerns. Various environmentalists advocate distinct strategies for a sustainable planet, but their collective aim is humanity's continued existence on Earth. I touch upon modern strategies, highlighting the sustainable development approach. This approach emphasizes ethics and aims to achieve balanced economic, social, and environmental goals. It underscores the sustainable use of resources for both current and future generations, seeking harmony between intergenerational and intragenerational justice. I conclude with recommendations to further sustainable development goals, mitigate resource overexploitation, and address numerous environmental crises. I hope this thesis inspires more efficient resource utilization and fosters active engagement in environmental problem-solving.