Influence of indole butyric acid (IBA) concentrations on air layerage in guava (Psidium guajava L.) cv. Sufeda

Air layering is the expedient way to get more number of plants however, root initiation in cuttings is a key success in case of Guava. Indolebutyric acid (IBA) hormone induces rooting but its appropriate concentration and response of guava cv. Sufeda was unknown. This experiment was carried out at Horticultural Research Farm, The University of Agriculture Peshawar, during 2016. One year old healthy branches of guava were selected and wounded by complete removal of 2 inches bark just below the bud for rooting. These wounds were covered with soil media containing different concentrations of IBA hormone, wrapped with plastic and tied at both ends. The air layered plants detached after rooting were shifted to polythene bags and were kept in plastic tunnel to maintain its humidity. Different concentrations of IBA i-e T1 (50 ppm), T2 (100 ppm), T3 (150 ppm), T4 (200 ppm) and control (T0) were applied. According to data analysis layers treated with 150 ppm of IBA (T3) was successful. Data recorded in control was minimum as compared to other treatments. We concluded that, the Guava cv. Sufeda air layered during monsoon season treated with 150 ppm IBA solution gives best results.