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New Forests

, Volume 31, Issue 1, pp 91–96 | Cite as

Stockplant Management for Optimized Rhizogenesis in Tectona grandis Stem Cuttings

  • Sanjay Singh
  • A. S. Bhandari
  • S. A. Ansari
Article

Abstract

A 5-year stand of teak (Tectona grandis L. f.) was coppiced in 1999 and converted into a vegetative multiplication garden. Subsequently, three harvesting regimes for the collection of single node stem cuttings were imposed: (1) once – in March (H 1), (2) twice – in March and September (H 2) and (3) three times in March, July and November (H 3). Cuttings were treated basally with either:- T 0 – control (6 h in water), T 1 – half the recommended dose of a mixture of IBA and thiamine (500 ppm IBA  + 400 ppm thiamine) or T 2 – the full dose of the same mixture (1000 ppm IBA  + 800 ppm thiamine). Cuttings receiving IBA  + thiamine rooted significantly better than untreated cuttings, but even the best treatment only resulted in 38.3 ± 3.8% rooting. This treatment produced the greatest number of roots (5.2–12.1). The full dose treatment appears to have been supra-optimal. Rooting ability was also affected by the frequency of stockplant pruning, with cuttings from stockplants pruned twice per year having the greatest rooting percentage (27.8 ± 3.8%) and the most roots (9.2 ± 4.8). This bi-annual pruning (H 2) resulted in the greatest number of rooted propagules (2.6 and 4.2 times more than H 1 and H 3, respectively). There was a significant interaction between Treatment × Pruning frequency. Bi-annual hedging of teak stockplants is recommended for practical purposes, although further work is required to achieve commercially acceptable levels of rooting from coppiced tree stumps.

Keywords

Coppice shoots IAA Root number and length Semi hardwood cuttings Thiamine 

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Copyright information

© Springer 2006

Authors and Affiliations

  1. 1.Tropical Forest Research Institute, P.O. – RFRCJabalpurIndia

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