Wood and biomass production of Leucaena in subtropical Australia

Mullen, B. F. and Gutteridge, R. C. (2002) Wood and biomass production of Leucaena in subtropical Australia. Agroforestry Systems, 55 3: 195-205. doi:10.1023/A:1020570115918


Author Mullen, B. F.
Gutteridge, R. C.
Title Wood and biomass production of Leucaena in subtropical Australia
Journal name Agroforestry Systems   Check publisher's open access policy
ISSN 0167-4366
Publication date 2002-11
Sub-type Article (original research)
DOI 10.1023/A:1020570115918
Volume 55
Issue 3
Start page 195
End page 205
Total pages 11
Place of publication Dordrecht, Netherlands
Publisher Kluwer Academic
Collection year 2002
Language eng
Subject C1
300606 Agroforestry
620503 Forestry
Formatted abstract
 Although only Leucaena leucocephala is widely used, most members of the Leucaena genus have potential as multipurpose species for tropical agroforestry systems. To investigate the wood and biomass production potential of the Leucaena genus, 116 accessions covering the 22 species were evaluated over a two-year period at Brisbane, southeast Queensland, Australia. Trees were planted into replicated line plots 5 m long, with rows spaced 3 m apart. Trees were initially planted at 0.5 m spacings within the plots, but were thinned to 1 m spacings prior to the evaluation period. The hybrid accessions, KX2 (L. pallida × L. leucocephala) and KX3 (L. diversifolia × L. leucocephala), were the most productive, yielding over 50 kg dry matter (DM)/tree. L. trichandra OFI53/88 and L. diversifolia CPI33820 were the most productive non-hybrid accessions producing total yields of 41 and 37 kg DM/tree, respectively. Cultivar Tarramba (26 kg DM/tree) was the most productive of the 26 L. leucocephala accessions assessed in the trial but all these accessions suffered from psyllid (Heteropsylla cubana) attack at this site. A series of non-destructive growth measurements was recorded every three months over the two-year evaluation period. Root collar diameter (RCD), stem number and plant height were found to be the most useful of the measurements for non-destructive assessment of accession agronomic characteristics. A relationship between yield and a growth index (calculated as RCD2 × Height/1000), was derived from data from all accessions and could be used as a reliable predictor of yield (r 2 = 0.94). The widespread use of the F1 hybrid leucaenas is currently limited by a lack of seed. Technologies to economically produce F1 hybrid seed on a commercial scale are required before the potential of these accessions in agroforestry systems can be fully realized.
Keyword Agronomy
Forestry
Fuelwood
Growth Index
Leucaena Hybrids
Psyllids
Psyllid Resistance
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Agriculture and Food Sciences
 
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Created: Tue, 14 Aug 2007, 17:45:16 EST