Responses of Swietenia macrophylla (King) seedlings to different sizes of canopy openings in mixed mahogany plantations

Mahroof, R.M., Hauxwell, C., & Edirisinghe, J.P. (2000) Responses of Swietenia macrophylla (King) seedlings to different sizes of canopy openings in mixed mahogany plantations. Tropical Agricultural Research, 12, pp. 127-137.

Abstract

A study was conducted during 1997-99 at 2 sites in Sri Lanka (Rambukkana and Kurunegala) to investigate the responses of Swietenia macrophylla seedlings to wide, moderate and narrow openings of high to low shade conditions in a mature mixed mahogany plantations. Survival, stem growth and shoot phenology of seedlings were recorded monthly. Seedling survival a year after planting showed high mortality under high shaded gap (3-8% photosynthetically active radiation (PAR)). At 51 weeks after planting, final stem height and root collar diameter were highly significant under low shaded gaps. Increased number of shoots and shoot lenghts were observed under low shade (50-78% PAR). Increased flushing was seen in all shade regimes during the rainy period. This study illustrates that low shaded gap openings favour seeding survival, stem and shoot growth, and number of shoots. On the contrary, high shaded gaps reduce the growth of seedlings and therefore may be less attractive to shoot borers.

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ID Code: 76193
Item Type: Journal Article
Refereed: Yes
ISSN: 1016-1422
Divisions: Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 17 Sep 2014 00:03
Last Modified: 17 Sep 2014 00:03

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