Effect of humic acid on morphological properties of cedar (Cedrus libani a. rich) seedlings

In this study, TKİ-Humas trademarked humic acid was applied to 2+0 aged containerised cedar (Cedrus libani A. Rich) seedlings from soil and leaves in monthly periods between April and October. The application was made from soil and leaves as; 0 (control), 20, 40, 60, 80 ml/lt. The effect of humic acid applied in different doses on the root collar diameter, seedling height, root length growth, number of branches, total fringe root numbers, fresh stem weight, fresh root weight, dry stem weight, dry root weight and rudder index of cedar seedlings were investigated. As a result of the analysis of variance, statistically significant differences were found between the procedures (p <0.05). The best dose for cedar seedlings found as 20 ml/lt for application in leaves and 60 ml/lt for soil application. The highest dose of 80 ml/lt was negative effects on seedling morphological characteristics.