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| Title: | Responses of Eurycoma longifolia jack to open planting area and fertilizer applications : study of the effects on growth performance and root yield |
| Authors: | Azarae I.
Azizol A. K.
Exelis Moise P.
Rasadah M. A.
Shahidan A.
Hada Masayu I.
Noor Syaheera M. Y. |
| Issue Date: | 2010 |
| Publisher: | Forest Research Institute Malaysia |
| Citation: | Proceeding of the Seminar on Biomass for Biofuels and Value-Added Products 2009 : Towards Efficient Utilization of Biomass. Kuala Lumpur (Malaysia), 27-28 Oct, 2009, p. 292-302. |
| Abstract: | One year old Eurycoma longifolia seedlings newly planted on Gajah mati soil were fertilised twice within 6 month intervals with complete Humus 8:8:8, KOKET nugget, bioorganic and chicken dung compost respectively. The significant improvement (70% level) of the height growth and basal area were recorded after the applications. The improvement was due to the application of fertilizers as soil conditioner to improve the soil structure with significant effect prior to the addition of nutrient level in the soil. Recently, the growth and root yield performance evaluation of seven years old Tongkat Ali was conducted at field plantation by FRIM and University of Malaya. Results obtained showed that the average plant height of the seven years old population was 7.65 m. It ranged from 710 to 875 cm. The average canopy width and height was 137 cm and 95 cm
respectively. Average stem diameter for 20 cm above soil level was 9.5 cm. Average fresh and dry root weight per plant was 7.208 kg and 1.803 kg respectively. Most plant had one or two strong taproots and several lateral. Some of the lateral roots matching the size and length of the main taproot, and showed various lengths and range of size. Based on the canopy width, Tongkat Ali can be planted at 1.0 m within row and 2.0 m between rows, if the plants are harvested after seven years of planting. The potential dry root yield of Eurycoma longifolia jack (ELJ) will follow this specific planting density under open system field planting and ranging from 5.5 to 7
t/ha even though BRIS soil type was used. This study also showed that Tongkat Ali was more prone to attacks by diseases and pests infestation in open area than in the natural habitat of tropical forest. Medicinal plants could become an alternative for urban landscape planning in the future. |
| License: | http://www.oceandocs.org/license |
| URI: | http://agris.upm.edu.my:8080/dspace/handle/0/8171 |
| ISBN: | 978-967-5221-361 |
| Appears in Collections: | Publications
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