Examining the Effect of Indole Butyric Acid and Nitrogen Fertilizer on ‎Morphological Traits and Concentration of Aloe vera Medicinal Plant

To investigate the effect of different concentrations of indole Butyric acid (IBA) hormone, nitrogen fertilizer, and their interaction on the morphological traits of Aloe (Aloe vera) medicinal plant, a factorial experiment following randomized complete block design with three replications was carried out. The treatments included: four levels of nitrogen fertilizer (0, 500, 1000, & 1500 mg per pot) of urea and 3 levels of indole Butyric acid (0, 500, & 1000 milligrams per liter). The results indicated that the application of different concentrations of indole Butyric acid changes the diameter and length of leaf in the plant. It also increases the rate of leaf yield and reduces in the number of shoots in Aloe vera. Nitrogen fertilizer has a meaningful effect on Aloin concentration and all morphological traits except the number of shoots. The concurrent use of nitrogen and indole Butyric acid has a greater impact on plant height and leaf diameter and increases Aloin.