International Science Community Association International Research Journal of Environmental Sciences 2319-1414 10 2 2021 04 22 An assessment of dust accumulation and leaf morphology at roadside plants in Kathmandu Valley, Nepal 45 51 EN Arthur MAHI A. Mahi 1 Physical Chemistry Laboratory, UFR SSMT, Felix Houphouet-Boigny University of Cocody Abidjan, B.P. V34 Abidjan, Cote dIvoire Konan YAO Marcel 2 Physical Chemistry Laboratory, UFR SSMT, Felix Houphouet-Boigny University of Cocody Abidjan, B.P. V34 Abidjan, Cote dIvoire Samuel N\'DA 3 Physical Chemistry Laboratory, UFR SSMT, Felix Houphouet-Boigny University of Cocody Abidjan, B.P. V34 Abidjan, Cote dIvoire Albert Trokourey 4 Physical Chemistry Laboratory, UFR SSMT, Felix Houphouet-Boigny University of Cocody Abidjan, B.P. V34 Abidjan, Cote dIvoire Gerishom Nyasiri Ayoma 1 Kenyatta University, Department of Biochemistry, Microbiology and Biotechnology, Kenyatta University P.O Box 43844-00100 Nairobi, Kenya Stella Kirui 2 Maasai Mara University, Biological Science Department, P.O Box 861-20500Narok, Kenya John Maingi 3 Kenyatta University, Department of Biochemistry, Microbiology and Biotechnology, Kenyatta University P.O Box 43844-00100 Nairobi, Kenya Anthony Kebira 4 Kenyatta University, Department of Biochemistry, Microbiology and Biotechnology, Kenyatta University P.O Box 43844-00100 Nairobi, Kenya Kavitha C. 1 Soil Science Department, Kerala Forest Research Institute, Peechi, Kerala, India Sujatha M.P. 2 Soil Science Department, Kerala Forest Research Institute, Peechi, Kerala, India Marjan Abdallah 1 The Centre for Innovation, New and Renewable Energy (CINRE) Department, Maasai Mara University, P.O Box 861-20500, Narok, Kenya Osano Aloys 2 The Centre for Innovation, New and Renewable Energy (CINRE) Department, Maasai Mara University, P.O Box 861-20500, Narok, Kenya Chaka Bakari 3 Department of Mathematics and Physical Sciences (MPS), Maasai Mara University, P.O Box 861-20500, Narok, Kenya Shrestha Sushila Devi 1 Central Department of Botany, Tribhuvan University, Kirtipur, Kathmandu Nepal Jha Pramod Kumar 2 Central Department of Botany, Tribhuvan University, Kirtipur, Kathmandu Nepal > Research Paper 2020 10 2 2021 04 22 Air pollution is one of the serious environmental issues. The vehicular emissions have a very harmful effect on the environment, human health and ecology. This research was planned to assess dust deposition on leaves of two selected plants are Callistemon citrinus and Lagerstroemia indica growing along the roadside of a city having high traffic density and construction. The work determines the variation in dust deposition on leaves and different structure of leaf with respect to species, seasons and study sites. The study was conducted in these seasons, i.e. spring, summer, autumn and winter, during 2017 / 2018. In C. citrinus, the deposition of dust on leaf was highest in heavily polluted sites in all seasons. The dust deposition and the morphology of leaf show the interrelationship in the growth and development. If dust accumulation was increased then the growth was decreased instead if dust deposition was decreased then leaf growth was increased. In L. indica, the deposition of dust on leaf was highest in heavily polluted sites. In different seasons, the dust deposition and the value of morphology of leaf showing the interrelationship in the growth and development differently. It was because of different environmental factors. In heavily polluted site, some dust deposition result and with this the growth of morphology of leaf was decreased. The result about the deposition of dust and in the morphology (length, breadth, area and specific length area) indicated that it was affected from the environment and deposition of dust on leaf. Copyright@ International Science Community Association