Method for using indoleacetic acid to promote rooting of cuttings in grape cultivation

Indole-3-acetic acid is primarily used in grapevine cultivation to promote rooting of cuttings. Specific application methods include quick immersion, slow immersion, and powder dipping.

Indole Acetic Acid (IAA) Quick Dip Method:
Prepare a 1000mg/L high-concentration solution. Quickly dip the base of the cutting into the solution for 5 seconds, then remove and air-dry. This method is suitable for quickly processing large numbers of cuttings.

Indoleacetic Acid Slow Dip Method:
Dip the base of the cutting into a solution of 25mg/L (for easily rooting varieties) to 200mg/L (for less rooting varieties) for 8-12 hours to promote rooting and inhibit premature bud germination.

IAA Powder Dip Method:
Dissolve indoleacetic acid in alcohol and mix with talc to create a powder. Dip the cuttings in an appropriate amount of the powder before inserting them into the seedbed.

In addition, indoleacetic acid (IAA) can synergistically promote fruit development with gibberellins. However, high concentrations can induce ethylene production, so careful concentration control is necessary.