Asian Journal of Agricultural and Horticultural Research

Potassium is a fast-moving element within plants and plays an influential role in regulating and arranging the osmotic pressure within the cell, as well as working to balance the cations and anions in the cell cytoplasm. A field experiment was carried out in Salah al-Din Governorat, to study the effect interaction of zinc from two sources, chelated and mineral, at different potassium levels on wheat indices. The experiment was designed according to (RCBD) and included two factors: the first factor Zinc fertilizer (chelate, mineral) at three levels for each it is (stander) for both, zinc mineral (10, 20) Kg h^-1, zinc chelate (10 ,20) Kg h^-1 and the second factor is potassium sulphate (K₂SO₄) at levels (0, 80, 160 ,240) Kg h^-1. The results showed the highest value interaction of physiological efficiency (PE) was obtained from the combination of (Zn₄ K₂) and significantly different from other treatment which reached an average of (15926.70) Kg Kg^-1 while the treatment (10Zn chelate Kg ha^-1 + 160 K Kg h^-1) gave the highest value for the Agronomic efficiency (AE) trait which significantly outperformed the rest of the traits within the same potassium fertilizer level as it reached (135.5) Kg Kg^-1, The treatment (Zn₃ K₃) also gave the highest rate of Apparent recovery efficiency (ARE) which was significantly superior, reaching (1.93 ) % , As for the Utilization Efficiency (UE) it reached the highest value (28656.4) ) Kg Kg^-1 which was recorded by the treatment (Zn₃ K₂).