A comparative study on the chlorophyll content of Azadirachta indica plantation suffering from automobile pollution from the Meerut city, India

In a comprehensive survey status in suffering leaves of Azadirachta indica in terms of green coloration and photosynthesis efficiency of plants around the various roads of Meerut City, showed of significant change in chl a, chl b and total chl contents and photosynthetic efficiency. The populations of autovehicles are significantly increases in crowded main road crossings of city connecting to Delhi, Muzzaffarnagar, Garh and Hapur. The chlorophylls and photosynthetic efficiency of suffering leaves in hazardously smoke pollution level, significantly decreases with a yellow coloration. However, in a moderate level of air pollution level index areas (i.e., Collectorate, Roorkey Road and Medical College area), efficiency of chlorophyll contents was slightly increases, as carbon dioxide level might indicated the photosynthesis metabolism.