http://archive.saulibrary.edu.bd:80 The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. 2026-04-21T03:33:39Z http://localhost:8080/handle/123456789/5581 EFFECT OF INTERCROPPING WITH MUSTARD ON INCIDENCE OF APHID (LIFAPHIS ERYSIMI) ALAM, MOHAMMAD SHIFUL The experiment was conducted in the research field of Sher-e-Bangla Agricultural University farm, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh during the period from November, 2013 to February, 2014 to evaluate the effect of intercropping on the incidence of mustard aphid. The experiment consists of six treatments such as Mustard with coriander, Mustard with fenugreek, Mustard with radhuni, Mustard with black cumin, Mustard with wheat and control (Mustard sole). It was laid out in Randomized Complete Block Design (RCBD) with three replications. Sole cropping of mustard was grown to compare the effectiveness of other intercropping treatments. The lowest number of infested plant per plot (17.82), flower infestation per plant (17.72%), total branch per infested plant (4.39), siliqua infestation per plant (65.13%) were recorded in mustard with coriander intercropping treatment. On the contrary, the highest number 33.96, 32.78%, 5.46, 98.08% respectively were recorded in control treatment. The maximum number of total siliqua per infested branch (25.73), total seed per infested siliqua (23.20), total seed weight per infested plant (8.86g) and total yield (0.49 tlha) were recorded in mustard with coriander intercropping treatment and the lowest result 17.83, 15.97, 4.67g, 0.19 t/ha respectively were recorded in control treatment. Among the intercropping combinations, mustard with coriander was the most effective treatment for the management of mustard aphid as well as producing the highest yield en_ A Thesis submitted to the Department of Entomology, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE (MS) IN ENTOMOLOGY 2014-01-01T00:00:00Z http://localhost:8080/handle/123456789/5580 Herbicides in modern sustainable agriculture: environmental fate, ecological implications, and human health concerns Parven, A.; Md Meftaul, I.; Venkateswarlu, K.; Megharaj, M. Abstract Herbicides play a crucial role in modern agriculture by controlling weeds and ensuring sustainable crop productivity. However, the use of herbicides has raised concerns regarding their contamination, posing serious threat to the environment, biodiversity, and food safety. Recent trends indicate a decline in the overall volume of herbicides usage, suggesting a shift towards more speciic and targeted formulations of herbicides. Also, there has been an increased use of systemic and preemergence herbicides. The global agriculture still faces several challenges because of the adverse environmental impacts caused by herbicide contamination, both at the application site and ofsite. In view of the growing concern, it is necessary to develop new herbicides with greater selectivity or bio-based herbicide that can degrade after successful control of the intended weed population and minimize or eliminate the environmental hazards. Furthermore, the adoption of integrated weed management practices rather than prolonged and repeated use of herbicide in agriculture can efectively reduce the growth of herbicide-resistant weed populations. The present review is a single valuable resource, providing insights into the recent trends and future challenges associated with herbicide use in modern agriculture, with a focus on human health and food safety. Also, we emphasize the advancements in herbicide technology, emergence of new herbicide-resistant weed species, regulatory considerations, and alternative approaches in herbicide use, all of which are particularly valuable to agroecology, policymakers, and stakeholders. 2024-06-19T00:00:00Z http://localhost:8080/handle/123456789/5579 Selenium and its nanoparticles modulate the metabolism of reactive oxygen species and morpho-physiology of wheat (Triticum aestivum L.) to combat oxidative stress under water deficit conditions Hasanuzzaman, Mirza; Raihan, Md. Rakib Hossain; Siddika, Ayesha; Bardhan, Kirti; Hosen, Md. Sarwar; Prasad, P. V. Vara Abstract Background Wheat (Triticum aestivum L.) is one of the most important cereal crop species worldwide, but its growth and development are adversely influenced by drought stress. However, the application of trace elements is known to improve plant physiology under water-limited conditions. In this study, the effects of drought stress on wheat plants were investigated, with a focus on potential mitigation by foliar application of selenium nanoparticles (Se(np)) and sodium selenate (Na2SeO4). The experiment was conducted in a net house using a completely randomized design with four replications. The treatments involved three levels of drought stress (mild, moderate, and severe) started at 30 days after sowing (DAS), with foliar sprays of Se(np) and Se (both 25 µM) initiated at 27 DAS and repeated 4 times at 7-day intervals until 55 DAS. Results Drought stress significantly reduced plant growth, whereas Se(np) and Se sprays enhanced it. Drought stress induced chlorophyll degradation, increased malondialdehyde and hydrogen peroxide levels, impaired membrane stability, and caused electrolyte leakage. Severe drought stress reduced the levels of antioxidants (e.g., proline, ascorbate, and glutathione by 4.18-fold, 80%, and 45%) and the activities of antioxidant enzymes (ascorbate peroxidase, dehydroascorbate reductase, and others). Conversely, treatment with Se(np) and Se restored these parameters, for example, 1.23-fold higher total chlorophyll content with Se(np) treatment, 26% higher APX activity with Se treatment, 15% lower electrolyte leakage with Se treatment in wheat plants under severe drought stress. This Se-associated enhancement facilitated rapid scavenging of reactive oxygen species and reduced methylglyoxal toxicity, thereby diminishing oxidative stress and positively affecting the morphophysiological and biochemical responses of the plants under drought 2024-01-01T00:00:00Z http://localhost:8080/handle/123456789/5578 Designing and development of agricultural rovers for vegetable harvesting and soil analysis Das, Bristy; Sayor, Tahmid Zarif Ul Hoq; Nijhum, Rubyat Jahan; Tishun, Mehnaz Tabassum; Sakib, Taiyeb Hasan; Karim, Md. Ehsanul; Uddin, AFM Jamal; Islam, Aparna; Mohsin, Abu S. M. To address the growing demand for sustainable agriculture practices, new technologies to boost crop productivity and soil health must be developed. In this research, we propose designing and building an agricultural rover capable of autonomous vegetable harvesting and soil analysis utilizing cutting-edge deep learning algorithms (YOLOv5). The precision and recall score of the model was 0.8518% and 0.7624% respectively. The rover uses robotics, computer vision, and soil sensing technology to perform accurate and efficient agricultural tasks. We go over the rover’s hardware and software, as well as the soil analysis system and the tomato ripeness detection system using deep learning models. Field experiments indicate that this agricultural rover is effective and promising for improving crop management and soil monitoring in modern agriculture, hence achieving the UN’s SDG 2 Zero Hunger goals. 2024-06-21T00:00:00Z