Abstract
Increased tropospheric O-3 concentrationismain factor affecting world agriculture production. In present investigations it has been investigated the affectivity of ethylene diurea (N-[2-(2-oxo-1-imidazolidinyl) ethyl]-N-phenylurea; EDU) treated mungbean plants (Vigna radiate L.) against ambient ozone and to assess the effects of ambient ozone by atmospheric pollution tolerance index (APTI) on mungbean plants grown under field conditions and onsome biochemical parameters. During the experimental period, monthly mean O-3 concentration varied between 79.4 ppb and 105.2 ppb. Substantial reduction in mungbean crop productivity under ambient conditions in contrast to EDU and N-EDU-treated plants was recorded. Significantly goodresults by the application of EDU were seen in order to observe photosynthetic pigments and air pollution tolerance index (APTI). The study validated that EDU lightens the unfavorable O-3 effects on mungbean crop and EDU can be utilized as a very useful toolto investigate agricultural crop reduction due to higher O-3 concentration.