Quality in forest tree seed centers in (a) origin; (b) genuineness; (c) purity; and (d) viability. The purchaser should insist on knowing the origin of the seed and the locality where it was collected.
Without seed testing establishments for investigating forest tree seeds by standardized methods under an established technique, nurserymen and foresters will continue to sow seed beds and undertake direct seeding without an adequate knowledge of the origin, genuineness, purity, and viability of the seeds used.
Toumey, James W., and Clark L. Stevens. 1928. The Testing of Coniferous Tree Seeds at the School of Forestry, Yale University: 1906-1926. Yale School of Forestry Bulletin 21. 46 pp.