Effect of Zinc Fertilization in Yield Components of Two Wheat Cultivars

Abstract

Two field experiments were carried out to study the effect of zinc fertilization in yield components of two wheat cultivars, bread wheat cv. Abu-Ghraib 3 and durum wheat cv. Doar 85. البحث مستل من رسالة ماجستیر للباحث الثالث In the first experiment Zinc was applied to the soil, Zinc levels were 4.0 and 8.0 kg Zn.ha-1 and control treatment (without Zinc). The Zinc was added from two sources, inorganic (ZnSO4.7H2O) and organic (Zn-DTPA). In the second experiment Zinc was applied as a foliar application. Zinc levels were 0.4 and 0.8 kg Zn.ha-1 and control treatment (spraying with water only). The results showed that number of spike / m2, weight of 1000 seed and number of seed / spike increased significantly when Zinc were added at 8.0 kg Zn ha-1 as a soil addition and 0.8 kg Zn ha-1 as a foliar addition compared to control treatment. The rate of increases by soil application of 8.0 kg Zn ha-1 of spike / m2, weight of 1000 seed and number of seed / spike were 21.8 and 28.8, 6.6 and 7.4, 22.0 and 10.6 for two wheat cultivars, bread wheat cv. Abu-Ghraib 3 and durum wheat cv. Doar 85 respectively. Also, the same components increased significantly by foliar application of 0.8 kg Zn ha-1. The rates of increasing were 13.4 and 15.7, 13.4 and 15.7, 17.6 and 13.7 for two wheat cultivars, bread wheat cv. Abu-Ghraib 3 and durum wheat cv. Doar 85 respectively. In general, soil addition of zinc resulted in higher increases in yield components compared to foliar addition of zinc.