ABSTRACT: The experiment was conducted at Institute of Agriculture, Tamil Nadu Agricultural University, Kumulur, Tiruchirappalli district of Tamilnadu, India. The experiment was laid out in Completely Randomized Block Design (FCRD) with 2 replications, including seven treatments of various concentration of NAA solutions viz., 500 ppm, 1000 ppm, 1500 ppm, 2000 ppm, 2500 ppm, 3000 ppm and control (without any treatment). Semi-hardwood cuttings of Tecoma stans were treated in quick dip method for 30 seconds and planted under mist chamber for rooting. Minimum days of sprouting (9.90 days), higher rooting percentage (80.90 %) and maximum root length (16.75 cm) were recorded in 3000 ppm concentration of NAA. We conclude from this experiment that quick dipping for 30 seconds with 3000 ppm of NAA will promote earlier rooting, maximum rooting percentage and improved root growth in propagation through rooting of Tecoma stans semi hardwood cuttings under mist chamber conditions of semi-arid tropical region.

Keywords - Tecoma stans, NAA, rooting hormone, quick dip method, semi-hardwood

| DOI: 10.17148/IARJSET.2021.88108