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Wood processors pay premiums for timber stable and stiff, while forest growers often prefer to have fast growing trees as to shorten rotation lengths increasing profitability. The preferences are not always aligned, particularly within wood properties. Stiffness, used for grading logs, is positively correlated with growth-strain with a Person correlation coefficient of 0.61, a substantial unfavourable correlation requiring a trade off between the two. While zero growth-strain is desirable to be economically viable to process, some unknown maximum value below which little economic loss is experienced exists. Stiffness is already used for log grades, structural timber in New Zealand requires 8 GPa \cite{nzs3603}. To met these stiffness grades at age two some compromise with the level of growth-strain in the stems is needed. Volumetric shrinkage is moderately negatively correlated with stiffness and strain. Growth and density show only small correlations with all other wood properties.   \begin{table}   \begin{tabular}{ p{3cm} p{3cm} p{3cm} p{3cm} p{3cm} p{3cm} p{2cm} p{2cm} p{2cm} p{2cm} p{2cm} p{2cm}  } & Density & Volumetric Shrinkage & Acoustic Velocity & Stiffness & Strain \\   Diameter & 0.15 & -0.10 &-0.02 & 0.02 & 0.12 \\   Density & & 0.12 &-0.03 &0.22 &0.023 \\