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New Forests

, Volume 50, Issue 3, pp 505–517 | Cite as

Effects of pre-severance irradiance on the growth of Allanblackia floribunda Oliv. stockplants and on the subsequent rooting capacity of leafy stem cuttings

  • Tsobeng AlainEmail author
  • Asaah Ebenezar
  • Leakey Roger
  • Tchoundjeu Zacharie
  • Patrick Van Damme
  • Ofori Daniel
  • Jamnadass Ramni
Article
  • 81 Downloads

Abstract

The rooting of Allanblackia stem cuttings is typically slow and with the formation of very few roots. Irradiance has positive effects on the relative growth of plants and rooting ability, but there is no information relating to Allanblackia species. Stumps of Allanblackia floribunda Oliv. were grown under three levels of irradiance (2008 µmol m−2s−1, 542 µmol m−2s−1 and 160 µmol m−2s−1) and were assessed for growth (plant height and the number of cuttings) and the influence of irradiance on the rooting ability of leafy stem cuttings. Shade light regime 542 µmol m−2s−1 resulted in significantly greater stockplant height than in 160 and 2008 µmol m−2s−1. Significantly more useable cuttings were harvested from the tall plants under an irradiance of 542 µmol m−2s−1, fewer from 160 µmol m−2s−1, and the least from 2008 µmol m−2s−1. The rooting ability of cuttings was greatest from stockplants receiving 542 µmol m−2s−1 (> 60%) and least from those receiving 160 µmol m−2s−1 (20%). 45% of cutting rooted from stockplants under full sun (2008 µmol m−2s−1). The speed of rooting of cuttings followed the same ranking with the fastest rooting from plants receiving 542 µmol m−2s−1 (7.1 ± 1.04 weeks to reach 25% of rooting) and the slowest from those under 160 µmol m−2s−1 (12.3 ± 1.85 weeks to reach 25% of rooting). The results of this study demonstrate that the light management of A. floribunda stockplants is important for the maximization of the yielding of cutting and the speed of rooting of leafy stem cuttings. Tree plantation being a key option to alleviate environmental challenges that the world is facing today, these results confirm previous findings which postulates that appropriate light management in stockplants can increase the production speed of required seedlings.

Keywords

Number of cuttings Rooting percentage Shoot length Shade level Speed of rooting 

Notes

Acknowledgements

Data collection and analysis were funded by the International Fund for Agricultural Development (IFAD, Grand ID IFAD 1098), the Belgium Development Cooperation and the CGIAR Research Program specifically Forests, Trees and Agroforestry (FTA) and Genebank.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.World Agroforestry Centre (ICRAF)NairobiKenya
  2. 2.Department of Plant Production, Faculty of Bioscience Engineering, Laboratory of Tropical and SubtropicalGhent UniversityGhentBelgium
  3. 3.International Tree FoundationOxfordUK
  4. 4.Ghent UniversityGhentBelgium
  5. 5.Czech University of Life SciencesPragueCzech Republic
  6. 6.Forest Research Institute of Ghana (FORIG)KumasiGhana

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