بررسي تاثير سطوح مختلف محلول پاشي مس و روي بر عملكرد و خواص كيفي دانه كلزا

Effects of foliar application of Cu and Zn on yield and quality of canola seed (Brassica napus L.)

The effect of foliar application of copper and zinc on grain, oil, protein yield, and seed quality of canola (OKP variety) were studied in Dashtkar region of Bardsir, 65 km south --west of Kerman. Copper and zinc solutions being sprayed twice (first in stem elongation and then in early flowering) in 16 treatments, each with different amounts of copper (copper sulfate), in four levels: Cul (0 kgCu/ha), Cut (0.15 kg Cu/ha), Cu3 (0.30 kg Cu/ha), Cu4 (0.45 kg Cu/ha) and zinc (zinc sulfate), in four levels: Znl (0 kgZn/ha), Zn2 (0.80 kg Zn/ha), Zn3 (1.60 kg Zn/ha) and Zn4 (2.40kg Zn/ha), using factorial experiment with split block design in three replications. The results showed that the effect of Zn levels and Cu-Zn interactions on pods/plant, seed, oil and protein yield were significant (p<0.1%). Whereas, Cu3Zn4 treatment made maximum increase. The results indicated that Zn3,Zn4 and Cut treatments had the most effect in increasing seed oil and protein (%). However Cu3Zn4 treatment, increased seed oil (%), seed Zn and Cu concentrations.