To improve the state and plant resistance to salinity which is our objective in this study, we worked on fertilization in salted medium. The experiment comprises two doses of phosphorus P1, P2 and four doses of potassium K0, K1, K2, K3 while using two levels of water salinity S1 and S2. The experiment is carried out in pots of vegetation with a durum wheat culture. The experimental device applied is �split-plot comprising 16 treatments and 3 repetitions. The results show that salinity has a significant effect on the reduction of growth and yield of plant; however the fertilizer has contributed to the improvement of aptitudes of plant in salted medium. The phosphoric fertilization played a very important role, the highest dose P2 gave good results of growth, yield of grain, yield of straw and the weight of 1000 grains. However the potash contribution has a less clear effect, but it is noted that the weak and medium dose K1 and K2 are the best with regard to some parameters under the conditions of our experiment. Concerning the content of grains of phosphorus, we noticed that the highest contents are recorded in the most saline treatments. Besides, the treatments having received the dose P2 present sodium contents of grains weaker than those having received the dose P1, this shows the importance of phosphorus under these conditions. It seems that the fertilization in saline condition ensures a favorable nutritional medium against the aggressiveness of salinity.

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