Effect Of Gibbrllen Spraying And Soil Fertilizing With Humic Acid At Vegetative and Root System Growth At Mandarin Saplings Citrus reticula L.

Abstract

This study was conducted in one of the lathe houses that follows station (B) in Horticultural and Landscape Design – Agricultural Engineering SciencesUniversity of Baghdad (Al Jadria ) to investigate the effect of foliar spraying of Gibbrllen and soil application of Humic Acid on Tangerine Saplings (Citrus reticulate L.). The experiment describes the significant effects of GA and Humic acid upon most vegetative characteristics like the height of the plant, number of shoots, number of leaves and percentage of dry matter in the vegetative system ). There was a special effect for two factors on most Root tarts, such as (root volume, number of roots, root diameter and percentage of dry matter in the root system). They significantly affect rest and leave chemical content traits under consideration. On the other hand, the interaction between two factors significantly affects most tarts under investigation. Keywords: mandarin, Gibbrllen, Humic Acid, vegetative and root system.