Seasonal variations and effects of ambient air pollutants on palak (Beta vulgaris L. var. Allgreen) plants were investigated with respect to root, shoot length, number of leaves plant-1, leaf area and root and shoot biomass at a suburban site situated in dry tropical area of India, experiencing elevated levels of ambient air pollutants.

This study examines the annual, seasonal and diurnal variations in the ambient concentrations of ozone at a suburban site of Varanasi, India, during 2002-2006. Prominent seasonal variations in ozone concentrations were recorded. Ozone concentrations were higher during the warmer months.