ABSTRACT
Two pot experiments were conducted during the winter seasons of [2002/2003 and 2003/2004] in the green house of the National Research Centre, Dokki, Giza Egypt to study the effect of different methods of potassium application on growth, yield and chemical constituent of canola grown under different levels of saline irrigation. Salinity has a depressing effect on various growth and yield parameters. Method of potassium application might have a stimulating effect on alleviating the adverse effects of salinity. Foliar application with 5.6 cm 3/L potassein plus soil application of potassium with the rate of 24 kg K 2O/ fed have stimulating effect on most growth parameters i.e. number of leaves and branches, dry weight of leaves, stem and whole plant and photosynthetic pigments as well as yield parameters i.e. number and weight of pods, straw and seed yield, seed index and oil percentage