ASSESSMENT OF PARTICULATE MATTER PM AND PM AND 10 2.5 THEIR IMPACT ON NEOLAMARCKIA CADAMBA AND CASCABETA THEVETIA IN REWA (M.P.), INDIA

Foliar surface of the plant is continuously exposed to the surrounding atmosphere and is the main receptor of particulate matter (PM2.5 and PM10 ). Particulate matters affect the photosynthesis, respiration, transpiration and allow the penetration of phytotoxic gaseous pollutants. The present exploration was undertaken during June 2023 to July 2024 to study the seasonal variation in particulate matter accumulation on leaves and their impact on roadside two common tree species namely Neolamarckia cadamba and Cascabeta thevetia in the region of Rewa city. Authors found that maximum particulate matter accumulation occurred during winter followed by summer and minimum in rainy season in both the species. Neolamarckia cadamba showed more particulate matter accumulation on leaves in comparison to Cascabeta thevetia. Particulate matter accumulation in different plant species not only depends upon the sources and amount of pollutants in the environment but also depends on morphological characteristics of plants like leaf size and surface, texture, hair, wax, length of petiole, weather condition and wind direction. These roadside trees can be used in the abatement of pollutants as they act as natural purifiers.