EFFECT OF TREATMENT WITH DIFFERENT CONCENTRATIONS OF INDOLE BUTYRIC ACID (IBA) ON THE ROOTING OF ELDER CUTTINGS (Sambucus nigra L.)

Abstract

In this work, the influence of different concentrations of indole-butyric acid on the development of roots, one-year-old and two-year-old hardwood cuttings (Sambucus nigra L.) was investigated. Both types of cuttings were treated with three different concentrations of indole-butyl acid in liquid form (500 ppm, 800 ppm, and 1000 ppm), including the control variant of one-year-old and two-year-old hardwood cuttings (without the application of hormones). The parameters examined at the end of the experiment were: the percentage of rooting of the cuttings depending on the hormone treatment, the length of the adventitious roots depending on the hormone treatment, and the fresh mass of the roots, also depending on the hormone treatment. The use of indole-butyl acid in a concentration of 800 ppm proved to be the best because it had the greatest effect on increasing the value of all tested parameters of the cuttings.