Chlorophyll does not make bud harsh. If that was true withholding magnesium would eliminate the pigment more effectively. But it's not true. Many Cannabis aromas originate from leaf pigments. You want them to break down during the cure, you don't want to eliminate the plant of its flavor precursors before harvest.
Many Cannabis aromas also derive from nitrogen compounds in the plant. Cutting nitrogen in flower is sabotage. Eliminating Nitrate reduction during finish makes sense, because it's a vast amount of energy consumed going from Nitrate to peptides. Most finishing additives contain nitrogen, in the form of amino acids and proteins. You should feed nitrogen at the end, in the proper form.
Excess Calcium at the end is just as or even more detrimental to quality as Nitrate. So is P. If your P and K are in the same bottle, or your plant is powered by calnit, I bet your nute line features a flush product. Flushing agents are comprised of antagonists against Nitrate, calcium, and phosphorus, along with stimulants to wrap up mid stream metabolic processes.
Lots of people rely on the cure for their bud to stop smelling like early-intermediate metabolic processes. I want my weed to smell like hash at harvest, not like a shoe store, which may or may not cure into acceptable flavors/effects months later.
Fuel to me: "if isopropyl alcohol was made out of sour lemons and was drinkable "
Fuel to the PhosOD crew: New tennis balls, new tennis shoes. Main off flavor in Cannabis (other than contaminants)
Feeding Nitrate instead of aminos: = Weak flavor. No "harsh chlorophyll bad flavor". Just weak flavor and poor shelf holding.
Chlorophyll: Irrelevant to flavor or burn. Sells better than the proposed alternative pigments (pheophytins, olive brown).
Halting photosynthesis halts sugar and lipid production. Why is everyone hung up chlorophyll. The Cannabis community has been blaming chlorophyll for bad weed as long as I can remember. It's absurd.
Sugar levels are highest at end of day. Over night the plant consumes its sugars in new growth (buds, in bloom). Plants know exactly how long their night is, exhausting their sugars at sunrise. Extending the dark period forces proteolysis, releasing the sulfur bearing amino acids required for the synthesis of many old school cannabis aromas.
The inconsistency in Cannabis data seems to stem from the fact that all modern Cannabis is mutt x mutt. If your plant wastes its energy on vape pen
terpenes instead of weed aromas, you're essentially growing a different crop with different chemistry and metabolism than we all were decades ago.
It's hard to work with Cannabis grows who insist on growing dozens of someone else's new varieties every cycle. Uvb elicits a response from plants capable of a response. Nothing bred in a basement for generations. If you grow your own stuff repeatedly, congrats you're qualified to learn how your specific plants function:
Harvest one plant in the morning and leave under lights for 1 cycle. The plant continues to produce sugars and lipids.
Harvest one plant with an extended final day. Plants know their day length and respond to even changes.
Harvest one plant with an extended night. This will show whether your plant gets aromas from amino acids.
Dry one plant under lights. Darkness consumes carbs, which many cannabis flavors derive from.
Dry one plant in total darkness. You've done the same thing as harvesting after 3 days of darkness.
This is how people learn things, if their plant physiology knowledge isn't there. By trying different things and taking real world observations. I grew up on a farm. Watching the animals grazing pattern. Noting differences in hay harvested the same day as chop compared to overnight. Humans have been documenting cycles related to agricultural since the beginning. Pot growers took those cycles out of the equation and have not been able to observe since.
If I cut at 7 in the morning, does the stalk die by 7:15? Or does it keep producing sugars and lipids under the sun until it's dry enough to lay in the field at night without feeding those sugars and lipids to bacteria and fungi? Properly grown properly harvested hay smells sweet. It's not just cannabis growers who have lost sight of quality over time.