In grapes, for quick dipping for 10 seconds before planting, the cuttings are dipped in IBA solution of ____ ppm. (MPSC Mains pepar-2, 2016)

✅Explanation: IBA (Indole-3-butyric acid) is a plant hormone that stimulates root development in cuttings. For quick dipping of grape cuttings, a higher concentration of 2000 ppm IBA solution is typically used for a short duration (10 seconds) to promote rapid rooting.