Effect of Foliar Application with Kinetin and Amino Acids in the Vegetative Growth and Chemical Content of Young Olive Trees cv. "K18"

Abstract

        The effect of foliar application with growth regulator of kinetin and amino acid solution under the trade name of vegeamino in the vegetative growth and chemical content of young olive trees cv. "K18" was investigated for the period from April 2020 to December 2020 in the olive orchard belonging to the Department of Horticulture and Landscape Gardening, College of Agriculture, University of Anbar, Iraq. A factorial experiment was conducted according to the Randomized Complete Block Design (RCBD), with three replicates for each treatment. The kinetin was sprayed at four concentrations (0, 50, 100 and 150 mg.L^-1) and spraying with three levels of amino acid solution (0, 1.25 and 1.50 ml.L^-1). The two study factors showed  a significant effect in most of the studied growth characteristics especially the foliar spraying treatment of kinetin at a concentration of 150 mg.L^-1 and the spraying with amino acids at a concentration of 1.50 ml.L^-1 where achieved a significant superiority in the length of new branches, leaves number increment, leaf area, the percentage of dry matter in leaves, branches content of total carbohydrates, leaves content of nitrogen as well as total chlorophyll compared to the control treatment which achieved the lowest values.