تأثير التظليل و البنزل أدنين و السماد العضوي Horti boost 10 لشتلات نبات الآس Myrtus communis L.

الملخص EN

The study was conducted in the fields of the department of horticulture and landscape engineering / college of agriculture / Kirkuk university / Shwaro district, it is located on the latitude (35.53°) and longitude (44.38°) of the city of Kirkuk, for a period of ten months from June 2021 to April 2022 .

for one-year old myrtle seedlings, and the seedlings were homogeneous in size and height (42 ± 2 cm), the study included the effect of three factors on the myrtle plant, the first factor the percentage of shading (50% inside wooden awning and shading with green saran clip 75%), and the second factor has three levels of the growth regulator benzyl adenine at concentrations (0, 35, 70) mg.l-1, by two sprays the first is in October and the second is in November , and the third factor is three levels of (Horti boost10) organic fertilizer at concentrations (0, 1, 2) ml.l-1, the implementation of this study followed the design of randomized complete blocks (RCBD) with a factorial experiment, and by three replications, 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 Duncan’s polynomial test at the 5% probability level, the results showed that the percentage of shading at the intensity was 50%, as it led to a significant increase in the diameter of the plant stem by 0.51 mm, and at the intensity 75% significant increase in plant height 62.62 cm, number of branches 28.32 branches.plant-1 and the length of the branches is 18.56 cm, and spraying with benzyl adenine at the concentration of 70 mg.l-1 was significantly superior in most of the studied growth traits, it gave the highest rate in highest rate in plant height, plant stem diameter, and branches length which amounted to (67.71 cm, 0.65 mm, 21.23 cm), respectively .

when spraying with organic fertilizer, it led to a significant increase in most of the studied growth characteristics, where the spraying at a concentration of 2 ml.l-1 was significantly superior in the characteristics of plant height 63.36 cm, stem diameter 0.543 mm, length of branches 19.58 cm, respectively.