W.A.G.A.B. Chandrasena . C.M. Nanayakkara . H.A. Sumanasena

Received in final form on March 28, 2022

Abstract : Many plant species benefit by forming symbiotic associations with arbuscular mycorrhizal fungi(AM). They are known to enhance plant growth, photosynthetic activity, and phosphorus content, act antagonistically toward soilborne plant pathogens and modify the concentration of plant metabolites. Consequently, the uptake of N, P, and K are also enhanced significantly by AM inoculation. Therefore, mycorrhizae have been developed as biofertilizers in many countries. Hence, it is a timely action to eva ... >>More

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Pradeepika Shaminie Saputhanthri . Dilshini Sandanika Thathsarani

Received in final form on March 28, 2022

Abstract : Accumulation of heavy metals in the environment greatly influences the life forms on Earth due to toxic effects on biological systems. Bioremediation utilizes living organisms to remove toxic contaminants from soil or water. Plants and microbiota inhabiting natural ecosystems loaded with heavy metals may have the potential to be developed into efficient bioremediation agents. Serpentines are unique ecosystems where metal-tolerant plants and microbes are found naturally. In Sri Lanka, although th ... >>More

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M.J. Mathushika . C.M. Nanayakkara . R.G.U. Jayalal . S. Thanthirige

Received in final form on March 19, 2022

Abstract : Sri Lanka is well-known for its lichen biodiversity. Lichen is a symbiotic association between a fungal partner a photosynthetic partner. Lichen inhabiting fungi may reside in lichens without involving in symbiosis. Unique secondary metabolites, especially lichen inhabiting fungi are reputed for antimicrobial, anti-inflammatory, anti-proliferative and antioxidant activity. The lichen Heterodermia sp. was collected from the Paraviyangala mountain of Kalupahana mountain range in Belihuloya of Saba ... >>More

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V.H.P. Sewwandi . Viharna Raveenthira . K. Jeyavanan . S. Sritharan

Received in final form on March 28, 2022

Abstract : A field experiment was carried out to analyze the effects of goat manure, compost tea, and Gliricidia leaf extract on the growth and yield performance of Alternanthera sessilis at the Department of Agronomy, Faculty of Agriculture, University of Jaffna. The research was conducted to determine the best organic input which leads to the highest productivity of Alternanthera sessilis and to reduce the application of chemical inputs which may cause negative impacts on human health and the environment ... >>More

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Navnit Jha . Shikha Verma

Received in final form on March 28, 2022

Abstract : The mathematical models depicting cancer development, distribution of heat intensity sources in the human head, and round cell oxygen diffusion with Michaelis–Menten uptake kinetic energy are dealt with the radial basis network and three-point compact discretization. The radial basis with evenly spaced grid points is applied to determine gradient approximations at the central grid and two adjacent grid points. The functional approximations and subsequent updates of gradient yield a nonlinear equ ... >>More

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A.A.D.A.S. Vimukthi . I.A.J.K Dissanayake

Received in final form on March 28, 2022

Abstract : Urbanization has led to many changes in natural landscapes and resulted in the conversion of many green spaces into built-up areas. This study was conducted to investigate the spatial and temporal variations of land use patterns and their influences on urban green spaces at the University of Colombo with the aim of contributing to the improvement of sustainable urban landscaping. Land use patterns were studied in selected years when quite rapid infrastructure developments were recorded. The Goog ... >>More

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