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Opportunities for the smallholder sandalwood industry in ... - ACIAR

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The data used to determ<strong>in</strong>e <strong>the</strong> size of <strong>the</strong> trees<br />

at ages 15 and 30 years were <strong>for</strong> trees grown under<br />

exist<strong>in</strong>g <strong>smallholder</strong>-managed systems with a mean<br />

annual basal <strong>in</strong>crement of approximately 1 cm. With<br />

trees managed more <strong>in</strong>tensely under commercial<br />

conditions, <strong>the</strong> mean annual basal <strong>in</strong>crement of<br />

1.8 cm was significantly (P < 0.05) greater than <strong>for</strong><br />

<strong>smallholder</strong> systems. Given that all trees measured<br />

under commercial conditions were 3 years old or<br />

less, it may be expected that <strong>the</strong>se growth rates<br />

would decrease. It is likely that trees managed<br />

more <strong>in</strong>tensively would atta<strong>in</strong> a greater size by year<br />

15, compared with a <strong>smallholder</strong> system. It is not,<br />

however, possible to predict <strong>the</strong> <strong>in</strong>fluence of a more<br />

<strong>in</strong>tensive management system on <strong>the</strong> development of<br />

heartwood <strong>in</strong> S. austrocaledonicum.<br />

46

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