pH based on growth stage ?

[strawberrydreams]

Are there advantages to changing your pH depending on what growth stage your plant is in ?

If so, would this be due to making certain nutrients slightly more available for what the plant is needing the most at that time?

 

[LoveGrowingIt]

Are there advantages to changing your pH depending on what growth stage your plant is in?

I doubt it. What growing method do you have in mind?

If so, would this be due to making certain nutrients slightly more available for what the plant is needing the most at that time?

It would be difficult to control, mostly because the uptake ranges for synthetic nutrients overlap. There'd be a downside risk of creating unintended nutrient deficiencies or excesses.

 

[strawberrydreams]

I doubt it. What growing method do you have in mind?


It would be difficult to control, mostly because the uptake ranges for synthetic nutrients overlap. There'd be a downside risk of creating unintended nutrient deficiencies or excesses.

Leca and Pon mostly. That’s what figured, especially if you’re trying to ride the line at the edge of the pH acceptable range. Unlike hydrangeas which can turn more blue with a more acidic pH.

 

[OldOneEye]

Are there advantages to changing your pH depending on what growth stage your plant is in ?

If so, would this be due to making certain nutrients slightly more available for what the plant is needing the most at that time?

Actually, yes, well in hydro
N is absorbed 5.6 to 6.1ish i believe. For canabis ideal ph is 5.8 to 6.0
Early flowering stage with higher P and K ideal range is 5.9 to 6.1
For late flower with higher P absorption ideal range is 6.1 to 6.3

 

[strawberrydreams]

Actually, yes, well in hydro
N is absorbed 5.6 to 6.1ish i believe. For canabis ideal ph is 5.8 to 6.0
Early flowering stage with higher P and K ideal range is 5.9 to 6.1
For late flower with higher P absorption ideal range is 6.1 to 6.3

I always thought plants utilize more K then P in flowering and fruiting

 

[OldOneEye]

I always thought plants utilize more K then P in flowering and fruiting

Yep, you are right I erred and transposed K and P.

 

[strawberrydreams]

Yep, you are right I erred and transposed K and P.

Thanks for confirming. I always found it odd that liquid fertilizer bloom formulas always promote high P which never made sense to me. In the horticultural schooling and greenhouse work I’ve had, no grower has ever said more P is required to me.

My guess is the canna industry was easily marketed to with ready made formulas because most don’t have the experience and knowledge to make their own fertilizers like big commercial food greenhouses do. And the marketers were possibly offloading cheaper Phosphorus and creating that myth to a new school of gardeners.

…. But maybe I’m wrong and Cannabis is the most unique plant in the world with specific NPK requirements ;)

 

[OldOneEye]

Thanks for confirming. I always found it odd that liquid fertilizer bloom formulas always promote high P which never made sense to me. In the horticultural schooling and greenhouse work I’ve had, no grower has ever said more P is required to me.

My guess is the canna industry was easily marketed to with ready made formulas because most don’t have the experience and knowledge to make their own fertilizers like big commercial food greenhouses do. And the marketers were possibly offloading cheaper Phosphorus and creating that myth to a new school of gardeners.

…. But maybe I’m wrong and Cannabis is the most unique plant in the world with specific NPK requirements ;)

P is supposed to start and promote bud set.

 

[LoveGrowingIt]

But maybe I’m wrong and Cannabis is the most unique plant in the world with specific NPK requirements

I doubt it's unique. It's business. Breeders, seed sellers, equipment sellers and growers improve their products to be more competitive and increase profits. The same has happened with every other commercial crop. It's the unavoidable result of the combination of cannabis and capitalism.