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Abstract
The influence of hormone concentration, date of cutting collection, rooting medium, shoot position, cutting type, and wounding on the rooting of semi-hardwood ‘Hayward’ kiwifruit [Actinidia deliciosa (A. Chev.) C.F. Liang et A.R. Ferguson var. Deliciosa] cuttings was evaluated. The highest percent rooting was obtained with cuttings from the apical (88%) and medial (66%) portion of current season's growth. Higher rooting percentages were obtained when shoots were collected mid-June to mid-July rather than September. Two-node cuttings wounded through the lower bud were given higher root quality ratings than wounded one-node cuttings, although rooting percentages were similar. Treatment with IBA at 4.0 or 6.0 g·liter–1 resulted in similar rooting percentages (58% and 69%, respectively) of two-node cuttings, but root ratings were higher with 6.0 g·liter–1. Cuttings rooted in vermiculite were given higher root quality ratings than those in perlite or 1 peat : 1 perlite (v/v) and had a higher percentage of rooted cuttings than those in peat:perlite. Chemical name used: 1H-indole-3-butyric acid (IBA).