I have been doing a lot of reading regarding the high phosphorous myth and how it is a waste to use bloom boosters with obnoxiously high amounts of P. All of this makes perfect sense but I am still confused to one thing.
For example, read this quote from Lawrence Brookes, a scientist from General Hydroponics:
"When plants are growing in a perfect happy life, when they are young and in vegetative mode, they have no particular reason to reproduce. Theyï¿½re secure and growing vigorously, becoming bigger and stronger. But when the trigger comes of day-length shortening, the plants are being told by nature that the winter is coming and the end of their life is at hand. And so, at this point the plants have to completely change priorities into reproductive growth. By switching the nutrients to something that enhances flower growth and reducing nitrogen significantly ï¿½ the plants are now threatened by the nutrient regimen. They are not on a starvation diet, but a modified diet that stimulates and enables reproductive growth ï¿½ kind of like a goose being fed for pate. Thereï¿½s a different set of priorities going on from the growerï¿½s point of view and the crop is responding. So now the job of the nutrient is to enable the plants to produce these wonderful flowers. So weï¿½re really now about helping that crop to flower ï¿½ tremendously, because flowers are the precursors to fruit and seed. We provide the elements needed for abundant flowering and we reduce the nitrogen that was needed for early structural growth while enhancing ingredients that enable flowering."
What he is saying here is it can be adventitious to "stress" a plant with reduced N and a high P is he not? This makes sense to me as well. Further, I also have been looking at tissue samples Big Mike did with different MJ strains - and results show that in fact, when in flower plants use a low amount of P...which validates the idea that high P is useless. BUT - is it true that if you reduce N and raise P it can send it into "overdrive" by stressing the plant thus forcing more vigorous flower production? This makes sense to me!
Perhaps it would be adventitious to combine the best of both worlds. Is there a general time during a plants blooming phase where it would be best to raise the P levels - and other times where P should be kept at lower levels? I agree with the theory that you should try to keep N levels similar to veg during flower as much as possible in order to keep the leaves nice and green. So perhaps at a certain point a different regimine could be switched over to a low N - high P to stress the plant. I just dont know when! Should you load up on P early during bloom - in the middle - or in the end?