Abstract
Recently, the Forest Tree Breeding Center has been promoting the installation of labels with QR codes to construct a material management system that incorporates automatic identification and data capture. In this study,
we used various materials to create labels with a QR code, and we compared the durability of the different labels
over 3 years. For both adult tree and seedling labels, we found that a P-touch label coated with a polyethylene
terephthalate film after printing with a thermal transfer printer exhibited high durability. However, because this
label requires separate preparation of the printing paper and the label mount, it is relatively expensive. Moreover,
although some of the labels that we examined were sufficiently durable for use in seedlings, further study is needed
to develop a label for adult trees that may be used for more than 30 years.
