The fruiting shedding mechanism, yield and growth parameters of three species of cotton were studied under different salinity gradients during kharif 1992-93. The per cent reduction of the total number of fruiting forms (squares) initiated,the total squares shed,the balls matured, growth and yield parameters at higher salinity is lower in Gossypium herbacium than G. hirsutum and G.arboreum.The fewer bolls matured per plant and lower weight of seed cotton per boll were the two main factors responsible for the yield reductions of all the species at higher salinity levels.