تأثير رش الحديد والزنك في بعض الصفات الخضرية وحاصل حبوب الحنطة Triticum aestivum L.))

Abstract

An experiment was conducted at Field of Crop Production Sciences – College of Agriculture , Baghdad University , to study the effect of spraying concentrations of iron and zinc as sulfates on some vegetative properties and grain yield of wheat (Dor 29 variety) . N, P and K fertilizer were added. Iron sulfate and Zinc sulfate were sprayed the concentrations of (0, 50 and 100) mg.Fe and (0, 50 and 100) mg Zn . L-1 at three stages of plant growth (vegetative growth , boating and flowering stages). Randomized complete block design was used at three replicates . Results showed that : All concentrations of iron , zinc and their interactions affected significantly on all study parameters . Interaction treatment Fe2 x Zn2 had a high effect on all parameters which were plant height (115.7) cm , flag leaf area (39.1) cm2 , chlorophyll index (51.5) spad unit , No. of tillers (8) tillers and grain yield (5.33) t.ha-1 .