Plant hormones, especially auxins, are not always water-soluble. To ensure proper dissolution and application, alcohol is used as a solvent. Higher % the higher the dissolution.
Every plant has a different threshold required to elicit a response, 400ppm is on the high end of the scale for gibberellin in a cannabis plant, rest im not sure.
1g in 1000 ml is 1000ppm,
1g in 2000ml is 500ppm.
Can be applied both through roots or foliar. Most of my experience is purely experimental, ABA is something ive had my eye on for a while, ABA forces stomata closed. when RH drops below 20% aba is mass produced. When stomata close, VOC(terpenes) cannot be releassed.
Terpene accumulation in plants is primarily triggered by a combination of biotic and abiotic environmental stressors, as well as internal factors. Abiotic stressors like UV radiation, drought, salt, and temperature stress can all induce terpene production and accumulation. In addition, biotic stressors such as insect feeding/defoliation and pathogen attack can also stimulate terpene synthesis as a defense mechanism.
Removing all red light from a grow removes the PR-pfr conversion meaning plant will accumulate but will be unable to release. Terpenes where not created so humans could get high and feel chill, terpenes play an important role in nature and especially in plants. among many other things they are responsible for attracting pollinators. Everything has a signal, everything has a trigger all you gotta do is figure out what they are and when best to apply.
Not conventional but thats ok, even if it makes 1% difference, one thing i've learned in cannabis growing is those 1% "inches" add up.