Influence of auxins, thiamine and fungal drenches on the rooting of<i>Prosopis alba</i>clone B₂V₅₀cuttings

Abstract

SummaryGrowth regulator and fungicide concentrations were identified for rooting cuttings of high-biomass-producing Prosopis alba clones. IBA and NAA concentrations of 0.0%, 0.3%, 1.2% and 3.6% (w/w) in talc were compared for their ability to stimulate rooting under recently identified optimum environmental conditions. IBA stimulated greater rooting percentages than NAA, and 1.2% IBA had the greatest rooting percentage (59%) and number of roots per cutting. A 1.2% IBA in talc mixture was not significantly different from a previously described and more complicated DMSO-based mixture. Fungal drenches of captan, benomyl and banrot were compared with a control. The greatest percentage rooting occurred with the low concentration of banrot (0.5 g l−1) and the control. Benomyl and banrot strongly inhibited the rooting percentage at the highest concentration (1.0 g l−1) examined.