Effect of GA3 and Method Application of Humic Acid on Some Vegetative Characteristics of Plum PRUNUS SALICINA L.

Abstract

This experiment was conducted in the lanth house of Horticulture Department-College of Agriculture-Baghdad university during the growing season of 2010 To study the effect of GA3,Humic acid and the method of its application on some vegetative characteristics one year old of plum seedling cv.Bathenjany budded on apricot rootstock ,treatment included two concentration 50,100 mg.L-1 GA3 as foliar spray,two concentration of Humic acid 1,2 ml.L-1 as foliar spray and two concentration of humic acid 5,10 ml.L-1 used with irrigation water .RCBD design at three replicate was conducted and used L.S.D to comparted the means .The Results obtained showd that two rates of GA3 were increased significantly stem height,while treatment with Humic acid 10 ml.L-1 was increasd significantly stem diameter,leaf area,number of leaves and branches,dry weight of leaves and branches, % of carbohydrate in shoots,chlorophyll and NPK content in leaves ,were also increased by foliar application of humic acid at 2 ml.L-1 .

Keywords

GA3, Plum