Rooting greenwood cuttings of sugar maple - effect of clone and medium

@inproceedings{Gabriel1961RootingGC,
  title={Rooting greenwood cuttings of sugar maple - effect of clone and medium},
  author={William J. Gabriel and James W. Marvin and Fred Hoerger Taylor},
  year={1961}
}
In forest genetics work, an important method for evaluating selected trees is clonal testing.