Effect of Shading Ratio, Benzyl Adenine and Organic Fertilizer ( Horti Boost 10) on the Content of Elements and some Chemical Compounds of Myrtle Plants (Myrtus communis L.)

Abstract

The study was conducted in the fields of the Department of Horticulture and Garden Engineering / College of Agriculture / University of Kirkuk / Shwaro District, located at latitude (35.53°) and longitude (44.38°) for the city of Kirkuk for a period of ten months from June 2021 until April 2022, for seedlings of myrtle plant of the age The seedlings were homogeneous in size and height (2 ± 42 cm), and the study included the effect of three factors on the myrtle plant, the first factor was the percentage of shading (50% inside the wooden canopy and shading with green saran clip 75%), and the second factor was three levels of benzyl growth regulator Adenine at concentrations (0, 35, 70) mg.l-1, by two sprays, the first in October and the second in November, and the third factor was three levels of Horti boost10 organic fertilizer at concentrations (0, 1, 2) ml. Liter-1, the implementation of this study followed the design of randomized complete blocks RCBD with a factorial experiment with three replications and the number of seedlings was (2 x 3 x 3 x 3 x 2 = 108) seedlings. The results were analyzed using the SAS program and the averages were compared using the test Duncan’s polynomial at the 5% probability level, and the results showed that the effect of shading ratio at the intensity was 50% It led to a significant increase in the leaves content of nitrogen 2.76%, potassium 1.95%, protein 1.55%, respectively, and there were no significant differences between the averages when using benzyl adenine at different concentrations in the experiment. And when spraying with organic fertilizer, a significant increase was observed in most of the chemical elements, where the spraying at a concentration of 2 ml.l-1 was significantly superior to the leaf content of nitrogen, phosphorous, potassium, protein, and carbohydrate (3.18%, 0.134%, 1.93%, 1.80%, and 10.60 %) Straight.