You don't need more P in flower.
Its an old myth that's bad for your plants and the environment.
This myth isn't just contained to cannabis, it's all over fruiting/flowering plants and the vast majority of bloom nutes are giving you the wrong NPK for your plants to thrive.
First here's Dr Bruce Bugbee, possibly the most knowledgeable cannabis focused scientist in the world. He recommends a 20-10-20 break down from start to finish. He was hired by nasa to design grows in space.
"The general scientific consensus is that high P does not improve flowering. I am not aware of any evidence that it helps flowering, especially in tomatoes. I have never studied Figs, but I do not expect they would be different.
The problem is that P is a serious environmental pollutant; so applying excess P is irresponsible. Agricultural researchers have been trying to get grower to apply less P for many decades. Responsible growers should start marketing their products as being grown without excess phosphorous.
For most crops 15-20 ppm P is adequate. In cannabis, our studies show a potential benefit of increasing to as much as 50 ppm P during the late flowering stage."
Big Mike from advanced nutrients also did some advanced leaf analysis and found the same to be true, plants never need more P than N/K.
Heres a link talking about the myths surrounding phosphorous and even a test where they showed with marigolds that higher P not only didn't help but actually hindered the flowering process
www.insituplants.com
An article from MSU talking about the phosphorous myth
www.canr.msu.edu
The pics at the end are a few of my own grows using low P high Nk throughout flower. I personally use megacrop 1 part.
Its an old myth that's bad for your plants and the environment.
This myth isn't just contained to cannabis, it's all over fruiting/flowering plants and the vast majority of bloom nutes are giving you the wrong NPK for your plants to thrive.
First here's Dr Bruce Bugbee, possibly the most knowledgeable cannabis focused scientist in the world. He recommends a 20-10-20 break down from start to finish. He was hired by nasa to design grows in space.
"The general scientific consensus is that high P does not improve flowering. I am not aware of any evidence that it helps flowering, especially in tomatoes. I have never studied Figs, but I do not expect they would be different.
The problem is that P is a serious environmental pollutant; so applying excess P is irresponsible. Agricultural researchers have been trying to get grower to apply less P for many decades. Responsible growers should start marketing their products as being grown without excess phosphorous.
For most crops 15-20 ppm P is adequate. In cannabis, our studies show a potential benefit of increasing to as much as 50 ppm P during the late flowering stage."
Big Mike from advanced nutrients also did some advanced leaf analysis and found the same to be true, plants never need more P than N/K.
Heres a link talking about the myths surrounding phosphorous and even a test where they showed with marigolds that higher P not only didn't help but actually hindered the flowering process
The Myths of Phosphorus and its Overuse in Indoor Horticulture - In Situ Plants Toronto | Green Walls | Live Walls | Office Plants
What amounts to basically a rant about high-phosphorus fertilizers, and why they're not worth using.
www.insituplants.com
An article from MSU talking about the phosphorous myth
Myth-busting phosphorus in your field
This article will break down the myths and the truths about phosphorus in your field
The pics at the end are a few of my own grows using low P high Nk throughout flower. I personally use megacrop 1 part.
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