Wheat plants were cultivated in Ismailia agriculturaal research station farm and fertilzed with potassium, as K2SO4 (48% K20), in a fo­liar spray and/or soil application. The treatments were control (without K-application), soil application with 24 kg K₂0/fed., foliar application of K: foliar-1 (1.0% K20) at the rate of 16 kg K20/fed., and foliar-2 (1.5% K20) at the rate of 24 kg K20/fed., Soil+foliar-1 and soil+foliar-2 appli­cations. The plants were sprayed with 400 liter .solution per feddan four times. The obtained results showed that soil + foliar treatments were superior for increasing wheat grain yield, straw yield and weight of 100 grain followed by foliar-K treatments. In general, increasing the potas­sium dose, decreased the percent of N, P, Na, Ca, Mg, Zn, Mn and Fe, while slightly increased K % in wheat grains comparing with the control (no potassium application) treatment. Increasing foliar-K rate did not im­prove nutrients content of grains.