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International Research Conference of the Open University of Sri Lanka: Recent submissions

Now showing items 21-40 of 522

PREDICTIVE ANALYTICS FOR RICE CANOPY MICROCLIMATE USING WEATHER FORECAST DATA AND BG-358 MONITORING

Bandara, K. M. N. P.; Wickramasinghe, B. M. G. S. T. S. K. (The Open university of Sri Lanka, 2025)

Rice (Oryza sativa) is a primary food source for over half the global population, yet its yield is increasingly threatened by climate-induced microclimatic variations, particularly during sensitive growth stages like ...
AI-POWERED MOBILE ASSISTANT FOR PRECISION CINNAMON FARMING USING REAL-TIME WEATHER AND SOIL DATA IN THE SOUTHERN PART OF SRI LANKA

Deemantha, L. T.; Wickramasinghe, B. M. G. S. T. S. K. (The Open university of Sri Lanka, 2025)

Ceylon cinnamon (Cinnamomum verum) is a globally renowned agricultural product and a key contributor to Sri Lanka’s economy, particularly in the Southern Province. However, cinnamon farmers face persistent challenges due ...
COMPARISON OF ANALYTICAL METHODS FOR DETERMINING NON- EXCHANGEABLE STABLE HYDROGEN RATIOS IN TEA

Binduhewa, K. M.; Amalka, B. A. T.; Dissanayake, D. C. K.; Ranatunga, M. A. B.; Chandrajith, R.; Hettiarachchi, L. S. K. (The Open university of Sri Lanka, 2025)

Determining the δ2H value of organic compounds is challenging due to the presence of moisture traces from ambient humidity, hygroscopic compounds, and exchangeable non-bound hydrogen atoms. Several approaches have been ...
INVESTIGATING THE PRESENCE OF CURCUMINOID IN CRUDE EXTRACTS OF C. longa AND C. zedoaria

Amadoru, S. D.; Aruggoda, A. G. B.; Weerakoon, S. R. (The Open university of Sri Lanka, 2025)

Curcuma species of Zingiberaceae family is a widely cultivated spice in Asian countries. C. longa L. is a well-established commercial source of curcuminoids, whereas C. zedoaria Rosc. remains relatively underutilized despite ...
ASSESSMENT OF SOIL NUTRIENT VARIABILITY IN LOW-INPUT PROSO AND FOXTAIL MILLET CULTIVATIONS IN SRI LANKA

Gunawardhana, U. G. D. S.; Jayathissa, D. A. R. C. N.; Gimhani, D. R.; Kurera, M. J. M. S.; Amath, S. M.; Hapuarachchi, K. H. A. D. U. K.; Wijewardhana, D. C. M. S. I. (The Open university of Sri Lanka, 2025)

Millets are gluten-free, nutrient-rich cereals, offering a sustainable solution to global hunger due to their climate resilience and low-input adaptability. In Sri Lanka, proso (Panicum miliaceum) and foxtail (Setaria ...
IDENTIFICATION OF SUITABLE GROWTH MEDIA FOR TOMATO (Solanum lycopersicum L.) CULTIVATION IN PROTECTED AGRICULTURE

Harishaaine, S.; Silva, N. R. N.; De Silva, C. S. (The Open university of Sri Lanka, 2025)

A study was investigated to identify the most suitable growth media for growing ‘Bathiya’ tomato variety under polytunnel conditions. Six different media combinations: Sand + soil + coir dust (T1), Sand + PBRH + soil (T2), ...
COMPARATIVE STUDY ON SHEAR VERSUS HAND PLUCKING OF UP- COUNTRY TEA

Sadhyapriyanga, S.; Kariyawasam, H. K. P. P.; Muddanayake, S.; Senarath, S. H. S. D. (The Open university of Sri Lanka, 2025)

A better-quality made tea relies on the plucking standard, and the aim of maintaining an optimum plucking standard is to obtain an economic yield, produce high-quality tea, and keep the tea bushes in good health. Currently, ...
INFLUENCE OF OPERATIONAL SEX RATIO, SIZE, AND BODY COLORATION OF MALES ON MATE SELECTION AND MALE-MALE COMPETITION IN Poecilia reticulata (GUPPIES)

Ramanayake, P. C.; Katugampala, D. M.; Bandara, K. V. S. N.; Bandaranayaka, K. O. (The Open University of Sri Lanka, 2025)

The operational sex ratio (OSR) in fishes fundamentally describes the intensity of sexual selection and potential reproductive success. It reflects the ratio of sexually active males to sexually receptive females, ...
FROM FARM TO MARKET: BANANA SUPPLY CHAIN EFFICIENCY AND PROFITABILITY IN SRI LANKA

Kalhara, G. E.; De Silva, W.; Witharana, A. (The Open university of Sri Lanka, 2025)

Banana (Musa spp.) is a staple fruit cultivated on about 9 million hectares worldwide. In Sri Lanka, despite the substantial production, limited information is available comparing the efficiency and value distribution of ...
SUBMERGENCE TOLERANCE IN SELECTED RICE VARIETIES OF SRI LANKA: AN EVALUATION OF Oryza sativa L. ACROSS DIVERSE WATER SOURCES

Lahiru, P. G. P.; Jayarangana, K. G. C.; Suraweera, A. G. C. G.; Dulara, T. P. E.; Dahanayake, I. S.; Kavindi, C. A. C; Sathsarani, R. V. M.; Maleesha, K. G. S.; Madushani, H. H.; Dulmini Dvinitha, N. V.; Nimashi Madhubhashini, A. B.; Gunawardana, D. D. D. D. (The Open University of Sri Lanka, 2025)

Submergence poses a major challenge to rice cultivation, significantly reducing harvest outcomes. Therefore, the adoption of rice varieties with enhanced tolerance to submergence is crucial. This study examines how ...
INVESTIGATION OF THE ANTIOXIDATIVE AND SUN-PROTECTIVE PROPERTIES OF Aegle marmelos AND Cardiospermum halicacabum HERBAL EXTRACTS

Mandakini, A. A. D. M.; Dharmarathna, S. M. Y. P.; Fernando, B. A. K.; Nethmini, S. H. S.; Wasana, G. G. D.; Liyanagama, L. G. N. D.; Kumarasinghe, S. D. K.; Pemarathna, E. G. D. P. M.; Perera, G. D. M. V.; Senevirathne, S. M. A. P. (The Open University of Sri Lanka, 2025)

Medicinal plants are rich natural sources of bioactive phytochemicals and are widely used in the cosmetic industry due to their compatibility in types, with fewer side effects. Therefore, it is essential to assess their ...
LOW-COST MULTI-SENSOR PLATFORM FOR MONITORING INSECT BEHAVIORAL RESPONSES TO ENVIRONMENTAL CHANGE: A CASE STUDY IN ANTS

Bamunusingha, Y. D.; Bandaranayaka, K. O.; Illeperuma, G. D. (The Open University of Sri Lanka, 2025)

Insect foraging behaviour is influenced by various environmental factors; however, continuous monitoring under natural conditions remains technically and financially challenging. In this study, we present a cost-effective, ...
ECTOPARASITES OF CHIROPTERAN SPECIES IN THE MANNAR ISLAND AND POONERYN REGION OF SRI LANKA

Gunawansa, P.; Fernando, V. A. K.; Fernando, T. S. P.; Wijesinghe, M. R.; Weerakoon, D. K. (The Open University of Sri Lanka, 2025)

Bats are hosts to a variety of ectoparasites, which may impact their health and the transmission of zoonotic pathogens. However, studies on bat parasites in Sri Lanka are very limited and are mainly restricted to the ...
INTRASPECIFIC VARIATION IN SCHNEIDER’S LEAF-NOSED BAT (Hipposideros speoris) ACROSS THREE ECOLOGICALLY DISTINCT ROOSTS IN SRI LANKA

Samarakoon, S. M. P. S.; Fernando, T. S. P.; Wijesinghe, M. R. (The Open University of Sri Lanka, 2025)

Hipposideros speoris occurring across all bioclimatic zones is one of the most widespread bat species in Sri Lanka. This study focused on ecological traits and body morphometrics of three colonies of H. speoris from ...
COMMUNITY KNOWLEDGE, ATTITUDES, AND PRACTICES ON SEA TURTLE CONSERVATION IN MADIHA AND POLHENA, SRI LANKA

Abeywickrama, Hasali; Nilakarawasam, Nayana; Rodrigo, Wasana (The Open University of Sri Lanka, 2025)

The global sea turtle population is threatened due to anthropogenic activities. The coastline of Sri Lanka, including Madiha and Polhena beaches, provides critical habitats for five species of sea turtles. Their ...
EFFECT OF CLIMATIC CHANGES ON REPORTED DENGUE CASES IN SRI LANKA: A RETROSPECTIVE STUDY FROM YEAR 2020 TO 2024

Wanasinghe, W. M. R. S; Herath, H. M. J. P; Kiridana, A. H. K.; Perera, A. P. S.; Bandaranayaka, K. O. (The Open University of Sri Lanka, 2025)

Dengue fever remains a significant public health challenge in Sri Lanka, with rising incidence and expanding geographic distribution in recent years. This study investigates the spatial and temporal variations of dengue ...
ASSESING DEGRADATION OF POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) IN FRONT OF TIN (Sn) STRESS BY A SOIL BACTERIAL CONSORTIUM

Fernando, R. N. A.; Vidarshana, K. K. D. H.; Sajida, F.; Ilma, M. I. F.; Hasna, M. H.; Madanayake, K.; Dharmasiri, N. (The Open University of Sri Lanka, 2025)

Polycyclic Aromatic Hydrocarbons (PAHs) are persistent in the environment and are toxic pollutants which have carcinogenic and mutagenic properties. They are composed of two or more fused benzene rings. Bacteria present ...
HABITAT PREFERENCE OF THE SRI LANKAN SLOTH BEAR (Melursus ursinus inornatus) IN RAINY SEASON USING OCCUPANCY MODELING IN WILPATTU NATIONAL PARK, SRI LANKA

Hippala, H. M. U. K.; Tharinduni, W. A. L.; Anawarathna, M. A. D. C. K.; Jayasekara, E. G. D. P.; Mahaulpatha, W. A. D. (The Open University of Sri Lanka, 2025)

The study focused on the endangered Sri Lankan sloth bear (Melursus ursinus inornatus), assessing its habitat preferences through occupancy modeling to improve target conservation efforts in protected areas. The study ...
COMPARATIVE ACTIVITY PATTERN ANALYSIS OF ENDEMIC CHEVROTAINS IN SRI LANKA

Tharinduni, W. A. L.; Hippala, H. M. U. K.; Gunathilaka, N. W. D. C. N.; Jayasekara, E. G. D. P.; Mahaulpatha, W. A. D. (The Open University of Sri Lanka, 2025)

Chevrotains are the most primitive ruminants, with few species surviving globally. Sri Lanka has two endemic species: Moschiola meminna in the dry zone and Moschiola kathygre in the wet zone. Data on their activity ...
THE EFFECT OF SUGAR AND GINGER EXTRACTS AS FLORAL PRESERVATIVES TO INCREASE THE VASE LIFE OF CHRYSANTHEMUMS

Kumarasinghe, N. G. S. D.; Dhananjani, H. G. I.; Weerasooriya, S. W. J. D.; Dayananda, P. G. P. M.; Palleweediya, P. D. U.; Wijenayake, M. S. H.; Somarathna, U. G. I. N.; Weerasinghe, W. G. L. N.; Dharmarathna, S. M. Y. P; Senadheera, P. (The Open University of Sri Lanka, 2025)

Cut flowers play an important role in the commercial floriculture industry and bring export earnings that highly contribute to the economy of the country. Their vase life and longevity depend on the flower variety and ...

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