Vol. 43

Title:
Is IBA an Effective Promoter of Root Formation on Cuttings of Eucalyptus grandis?

Authors:
A.S. Carter and M.U. Slee

pp: 109-113

Abstract:
Cuttings of a single clone of Eucalyptus grandis ex Hill. showed a positive rooting response to the presence of IBA applied as a liquid to the cutting base. The magnitude of the response varied with each of three identical trials conducted during winter, spring, and summer and it was not possible to define any optimal dose rate in the range 0 to 10,000 ppm IBA. A concentration of 2000 ppm was as equally effective as 4000, 6000, 8000, or 10,000 ppm. Root formation on cuttings dipped in IBA for 1 second was no different to that on cuttings dipped for 5 or 10 seconds. No advantage was achieved by allowing the base of treated cuttings to dry before the cuttings were inserted into the propagation mix.

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