Apple is one of the most important temperate fruit crop grown throughout the world. The high-density planting system (HDP) is now being conceived as an alternative production system having a potential for improving productivity, increasing yield efficiency, reducing input cost, minimizing risks and maximizing returns. Clonal rootstocks used in high density plantations (like M9 T337, M9 T339, MM 111, MM 106 and so on) have the benefit of producing uniform, precocious, dwarfing trees with simpler canopies which ultimately result in greater productive orchards. For propagating these rootstocks in large number and in lesser space hardwood cuttings are used. Rooting percentage of these is however poor, thus to obtain higher percentage of rooted cuttings the use of root promoting growth regulators and appropriate rooting media is essential. So in order to find best combination of rooting media and IBA concentration for propagation of apple rootstocks, an experiment was conducted in the nurse

vermiculite, perlite, sprouting, survival percentage.

From the present investigation, it can be concluded that rooting capacity changes with genotype, rooting media, growth hormone concentration, etc. Moreover the hardwood cuttings of MM106 clonal rootstock with treatment combination of G2 (IBA: 3000ppm) and M3 (sand + vermicompost + perlite) (1:1:1) were superior to obtain higher survival of superior rootstock cuttings. These result can be utilized to create a convention for generation of quality planting material of apple clonal rootstocks through cuttings. Further research on the rooting of these cuttings need to be done using different media and different harmone concentrations. Also development of protocols for in vitro rooting of cuttings, scion propagation protocols and also in vitro-grafting (micro grafting) for the production of large scale disease free planting materials need to be done

Sachin H.R., Nazir, N., Kalil, A., Nisar, S. and Din, S. (2021). Evaluation of Different Doses of Indole-3-Butyric Acid (IBA) and Rooting Media on the Vegetative Growth Parameters of Apple Clonal Rootstocks. Biological Forum – An International Journal,