I currently work in an organic grow facility, I can't share much about what we do(nda), but I believe I can say this. We scratch dry amendments into the surface usually once a week for the whole life of the plant to maintain proper nutrition to the soil web and they get a few different teas. This grows huge plants that we have to heavily trim back several times to maintain a functional canopy to flower. After about 10 weeks of veg and 8-12 weeks of flower they yield some very dank terpy nugs, and usually about 1.8-2 lbs per 1k light.
Previously I spent over 10 years doing Sea of Green style flood and drain hydroponics, in a perpetual cycle. I used 6 inch pots of hydroton in a 4x4 flood tray under a 1k hps. I took clones off small mother plants every 2ish weeks. Then I potted the previous batch of clones and put them into veg, and put the veg plants into flower every 2ish weeks. I also harvested about 25% of my flower room at the same time. I was able to fit 45ish clones into my flower tray at a time, so usually I had cycles of 10-12 plants every 2ish weeks. The plants went into flower about 7-8 inchs tall and finished between 25-30 inchs typically. That garden produced the dankest nugs many people I shared with had ever seen. Smell them across the room while the bag is still in my pocket kind of nugs. Yield depends on genetics obviously but a low average was 20g per plant(20gx45plants=900g dried) or roughly 2lbs per 1k light. My typical average was around 25g per plant or 2.5 lbs per 1k, and my highest yielders would put out over 30g dried per plant.
As of yet I havn't found a grow method that out produces SOG f+d in the same time frame. Obviously you can veg out giant plants that produce huge yields, but that all takes time and space. With SOG you can turn over 2 harvests in the time it usually takes a person to finish one veg/harvest cycle.
I absolutely appreciate well grown and properly fed cannabis. I am a firm believer that you can achieve the exact same level of results whether you use organic methods or whether you use direct mineral feeding through bottled or dry nutrients. The key is using good products either way, giving the plants the balanced nutrition they need, and not going overboard. You can still easily overfeed and ruin plants with organics.