Message to URBI have a crop two weeks into flower right now, so I cut out all humic/fulvic acid because of this.
Oh gosh, they'll all be rabidly against this study since it's bad for business. I'm interested in the authors' hypothesis that different pathways are involved in this humic acid/thc lowering effect than in other plants that have shown an increase in essential oils/terpenes. Considering the overall quality of their research papers, and the fact that their other findings match up closely with what I've observed, I've stopped giving humic/fulvic acid to my plants in flower. I'll def keep it around for germination, cuttings, foliar sprays in veg, etc, but no more during flower for now.
Have you reviewed this study which details undesirable effects on cannabis thc values associated with humate application? If so I am most interested in your reaction.
Impact of N, P, K, and Humic Acid Supplementation on the Chemical Profile of Medical Cannabis (Cannabis sativa L)
Mineral nutrition is a major factor affecting plant growth and function. Increasing evidence supports the involvement of macro and micronutrients in secondary metabolism. The use of the appropriate nutritional measures including organic fertilizers, supplements, and biostimulants is therefore a...