From what I'm coming to find is that most of the legacy growers (PNW) know what the hops need during the reproductive growth phase in the way of nutrients to coax the best oil profile to develop, but there are other factors that play a much bigger role in the quality of the final oil composition. Growing temperatures throughout the season have a huge impact on the quality of the oil package as does harvest timing as the plants push a ton of energy into making the oils/resins within like the last week or so leading up to harvest. Now, if you have so much acreage of one variety that it takes you an entire week to harvest, the oil composition of the early harvested vs the late harvested can be quite different, so the lots are generally blended to homogenize things a bit. It's easy to grow hops, but not so easy to grow high quality hops year in and year out.