In order to investigate the significance of the moon phases at the felling date on wood properties of Norway spruce, 30 trees from the same growth site were felled at six different dates during waxing/ascending, and waning/descending moon cycles, respectively. The present work deals especially with the effect on wood-water-relations of the analysed samples, as well as with the effect on some wood properties after weathering. The results show significant differences in the second half of the experimental felling period.

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