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Proceedings of the International Plant Propagator's Society

Vol. 53

Novel Methods of Applying Rooting Hormones in Cutting Propagation

Gene Blythe and Jeff L. Sibley

pp: 406-409


Auxins as root-promoting chemicals (often commonly referred to as "rooting hormones") are most frequently applied to stem cuttings using a basal quick-dip in a concentrated solution, a powder (talc) application, or an extended basal soak in a dilute solution. Liquid formulations offer the advantages of flexibility by allowing dilutions to various final concentrations and uniform application to the base of the cuttings, while powder formulations require no additional preparation prior to use. Registered products in the United States include IBA (indolebutyric acid) and IBA/NAA (indolebutyric acid / naphthaleneacetic acid) combinations in the form of liquid concentrates, water-soluble tablets, and powders.

The basal quick-dip is the most popular method of auxin application in nursery propagation. Historically, commercial propagators have found quick-dips to be the quickest and most economical method as a limited amount of material can be applied directly to the basal region

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