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low N content of sol fraction did not affect
significantly to the diameter growth of seedling
particularly when the period of planting was
lengthen.
3.3 Effect of LD to Biomass
Means of biomass of A. cadamba seedlings part of
top, root, and ratio of top/root after 12 weeks after
planted were exhibited in Table 5.
Table 5: The average of seedling biomass of A. cadamba
in various part (top and root) at 12 weeks after planted
Remarks: means not labelled with the same letter were
significantly different from the control.
Table 5 showed that the top biomass of seedling
was affected by LD treatment except the commercial
one. However, root biomass as well as ratio of
top/root did not affect significantly. This experiment
proved that LD containing high N content sol
fraction can be utilized as the fertilizer for seedling
particularly for the top part (shoot, leaves, and stem).
4 CONCLUSIONS
Growth parameters namely plant height and
diameter of A.cadamba were significantly enhance
after exposure of LD’s fertilizer. However, biomass
parameters such as dry weight of roots and top/roots
ratio did not influence.
This finding suggested that fertilizer made of LD
originated from PB bonded by UF resins can be
utilized as fertilizer for seedlings particularly for top
growth, particularly for A.cadamba seedling, a non-
food plant.
ACKNOWLEDGEMENTS
Part of this study was supported by a Research Grant
with Scheme of PTUPT (Penelitian Terapan
Unggulan Perguruan Tinggi) of the fiscal year of
2019 from the Directorate for Research and
Community Service, Ministry of Research and
Higher Education, Republic of Indonesia. Thanks
also for Friski Juniarto Siringo-ringo for his
laboratory and field work in this research
REFERENCES
Czarnecki, R., Dziurka, D., Łęcka, J. 2003. The use of
recycled boards as the substitute for particles in the
centre layer of particleboards Electronic Journal Of
Polish Agricultural Universities, Wood Technology,
Volume 6, Issue 2. Available Online
Http://Www.Ejpau.Media.Pl
Dunky, M. 1998. Urea-formaldehyde (UF) adhesive resins
for wood. International Journal of Adhesion and
Adhesives 18:95-107.
European Commission, 1997. Caring for our future.
Action for Europe’s Environment. Office for Official
Publications of the European Communities,
Luxemburg, pp. 75–78.
Gong, M., Yu, Z., Li, Q., Yu, L. 2007. Study on
manufacturing regenerated particleboards from waste
particleboard products. China Wood-based Panels
14(8), 489 34-37. DOI: 10.3969/j.issn.1673-
5064.2007.08.010
Gao, P., Sun, Z., Kong, Y., Zhou, J., Dong, C., Yang, Y.
2014. Experimental study of nitrogen transformation
in biomass pyrolysis. Sol. Energy 35(12), 2541-2546.
476 DOI: 10.3969/j.issn.0254-0096.2014.12.033
Huang, Z., Yuan, B., Dong, X. 2004. Manufacture of
regenerated particle board by the scrap particle board
and its products. Forestry Science and Technology
29(5), 514 40-41. DOI: 10.3969/j.issn.1001-9499.20
Huang, Z., Wang, Y. 2005. Study on particleboard
preparation by using recycled panel as initial material.
Forest Products Industry 32(4), 16-19. DOI: 511
10.3969/j.issn.1001-5299.2005.04.0
Lykidis, C., and Grigoriou, A. 2008. Hydrothermal
recycling of waste and performance of the recycled
wooden particleboards. Waste Management 28: 57–63
Martawijaya, A., Kartasujana, I., Mandang, Y.I., Prawira,
S.A., Kadir, K. 1989. Wood Atlas of Indonesia Volume
II. Forest Research and Development Agency,
Ministry of Forestry, Republic of Indonesia (In
Indonesian).
Nuryawan, A., Singh, A.P., Park, B. -D. 2015. Swelling
behaviour of cured urea-formaldehyde resin adhesives
with different formaldehyde to urea mole ratios. The
Journal of Adhesion 91:677-700
Orwa, C., Mutua, A., Kindt, R., Jamnadass, R., Simons, A.
2009. Agroforestree database: A tree reference and
selection guide (version 4.0). World Agroforestry
Centre (ICRAF), Nairobi, Kenya.
Peng W, Riedl B. 1995. Thermosetting resins. Journal of
Chemical Education 72(7):587-592.
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