Influence of Plant Growth Regulators and Azospirillum on Survival Percentage of Transplanted Air Layers in Guava (Psidium guajava L.)

Investigation was carried out on air layering in guava as influenced by growth regulators and Azospirillum was carried out in the Orchard, Department of Horticulture, Faculty of Agriculture, Annamalai University, Annamalai Nagar during 2013-14, aimed to find out optimum concentration for maximum survival percentage in mature shoot air-layers of guava cv. L-49. There are 14 treatment combinations with three replications laid out in Randomised Block Design. With regard to survivability of ischolar_mained layers, maximum survival percentage (98.14%, 60 days after separation) was noted in the layers treated with Azospirillum 37.5g + IBA 3000 ppm + NAA 3000 ppm (T₁₂).