Effect of Indole-3-Butyric Acid (IBA) on Hardwood Cutting of Grapes (Vitis vinifera L.) cv. Pusa Navrang

Aims: The study aims to investigate the influence of different IBA concentration on the rooting and subsequent growth of hardwood cuttings of "Pusa Navrang" grapevine.

Study Design: The study was performed in RBD design with replicate 5 times.

Place and Duration of Study: The study was conducted at Research Farm, College of Horticulture, Mandsaur, during the period November 2020- March 21.

Methodology: Polybags size of 5 X 7 inch was used for experiment. After the filling of growing media in poly bags, the hard wood cuttings of Pusa Navrang with uniform size having 4-5 functional bud was taken from one year matured canes from research farm, College of Horticulture, Mandsaur. The diameter of cutting about 0.75 to 1 cm (pencil thickness) were taken and before planting cuttings were treated with IBA solution by quick dip method.

Results: The significant result were found for shoot parameter like shoot length, number of nodes per shoot, internodal length, number of buds per shoot, stem diameter, stem fresh weight, stem dry weight. Root Parameters like number of primary and secondary roots, root length, root thickness, whole root volume, fresh weight of root and dry weight of root. Leaf Parameters like number of leaves per plant, fresh weight of leaf, dry weight of leaf, leaf area, leaf area index, specific leaf weight, minimum days taken to emergence of 1st leaf and water content of leaf found in IBA @ 6000 ppm (G3).

Conclusion: Among four concentration of growth regulator (IBA), the application of IBA @ 6000 ppm (G3) responded well in terms of rooting and shooting in hard wood cutting of grapes.