I do not have specific information as to the case study but here is the quote, so if anyone is interested here you go and you can decide on your own.
\"There are many reasons why seed will or will not grow, many are covered in the ?Why woodland ginseng plantings fail? power point. Ginseng that is eaten by people as roots will always be judged on appearance and taste and afterwards, perceived efficacy. Saponins (which includes all known ginsenocides) vary so much from plant to plant that it is impossible to determine what they are from any given lot. Research at Cornell found that there was no significant difference in ginsenocide content from 4 year old field grown root, versus 25 year old presumed wild NC root, versus forest cultivated 8 year old root.\"
Thanks,
Latt