Abstract: The aim of the study was to investigate the physiological effects of the fungicide Captan on germination as well as some leaf contents of pepper plant Capsicum annuum L. For the germination experiments, seeds of pepper were treated with a recommended concentration of 2.5 g l-1, two higher concentrations of 5.0 g l-1 and 7.5 g l-1 as well as a water-treated control. For the effect of fungicide on leaf contents, the seedlings were treated 4 times with the three different concentrations of Captan with 6-day intervals starting with 2-month old seedlings. The results showed that germination rate decreased with all concentrations of Captan, this effect being more pronounced at the higher concentration and after 144 as well as 168 hours. Analysis of the treated leaves showed that the recommended concentration resulted in higher amount of chlorophyll a as well as a/b and carotenoid contents of the leaf than the higher concentrations and control while the amount of chlorophyll b and total chlorophyll was reduced in all the treated plots. All concentrations of Captan gave higher amount of chlorophyll a/b than the control. Generally, treatment of higher fungicide concentration yielded in lower values of all the investigated leaf contents. Concentrations of 2.5 as well as 5.0 g l-1 showed higher values of protein, proline as well as internal ABA contents of the leaf than the higher concentration as well as control. The higher concentration gave lowest values for these three leaf contents.