EFFECT OF SOIL AND FOLIAR APPLICATION OF POTASSIUM ON YIELD AND MINERAL CONTENT OF WHEAT GRAINS GROWN IN SANDY SOILS

ABOUEL-DEFAN, TAREK A.; EL-KHOLI, HOSAM M. A.; RIFAAT, MOHAMED G. M.; ABD-ALLAH, ALI E.

doi:10.21608/ejar.1999.331371

EFFECT OF SOIL AND FOLIAR APPLICATION OF POTASSIUM ON YIELD AND MINERAL CONTENT OF WHEAT GRAINS GROWN IN SANDY SOILS

Document Type : Original Article

Authors

Soil, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt

10.21608/ejar.1999.331371

Abstract

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.