EFFECT OF THE DATE OF THE AUTUMN BUDDING AND THE FOLIAR SPRAYS WITH ( Fe + Zn ) ON GROWTH OF CITRUS SEEDLING

Abstract

This study was carried out at the Horticulture and Forest station in Mahaweel – Babylon . During the years of 2005 – 2006 to recognize the effect of the date autuman budding ( 25 / 8 and 25 / 9 ) and foliar sprays with Fe and Zn ( 100 and 150 mg Fe/ L, 25 and 50 mg Zn / L and 100 mg Fe / L + 25 mg Zn / L , control on growth of Citrus seedling ( sweet orange and mandarin and lemon ) By using R C B D design with three replicates for each treatment . The results are summarized as follows :- 1-The first date budding ( 25/ 8 ) caused significant increasing in all studied characters (seedling length , numbers of vegetative shoots and diameters , numbers of leaves , leaf area , dry matter of leaves and roots , percentage of nitrogen and phosophorus in the leaves , concentration of iron & zinc in leaves . 2-The treatments ( 100 mg Fe / L + 25 mg Zn / L ) showed significant increased in all studied characters .