THE EFFECT OF GIBBERILLINE , BENZYLADENINE AND IRON CHELATE Fe-EDDHA ON FRUIT SET AND YIELD OF CLEMENTINE MANDARINE TREES (Citrus reticulata L. Blanco )

Abstract

This study was conducted in shaded citrus orchard located in Diala Province. Afoliar sprays at full bloon from GA3 ( 30 mg/L), BA (20 mg/L) , Iron ( 150 mg/L) (GA3+ Iron) (30+150 mg/L).the objectives of this treatment was to determine the effect of there treatments on fruit set, yield and fruit quality . Arandomized Complete Block Design (RCBD) was used with three replications .The results showed that , (GA3+ Iron)treatments increased fruit set to 51% as acompared with control, BA decreased fruit drop after june drop , BA treatments increased fruit number/tree to 65% percent and increased yield weight / tree to 44% .