Phosphoric acid, is it considered to be organic?

[BII]

The pH Down product from General Hydropnics, which seems to be the most popular, is (from Safety Data Sheet):.
Phosphoric acid: ≥10% - ≤25%
Citric acid: ≥5 - ≤10

This seems rather harmless when diluted. I presume phosphoric acid is just the soluble form of phosphate (P), an essential nutrient.

 

[Kinezokyprios]

To lower your ph in an organic way without causing feeding issues (phosphoric acid eventually will cause a nutrient burn) you can use 1) citric acid and 2) vinegar. Both are available in every supermarket.
If you need to lower the soil ph urgently and a gradual adjustment through water is not working, just water with a cup of black filter coffee, but keep low on food if you do so - coffee has a lot of N.

 

[KIS]

Phosphoric acid is allowed in organic production by the NOP for use in stabilizing fish hydrolysate, that's where the P content comes from. Is it organic? No.

So you can decide what works for you based on your own definitions. Another example of this is how seaweed extract powder is stabilized using potassium hydroxide.

As far as your microlife in the soil, small amounts would not have a detrimental effect. Fish hydrolysate is a great fungal food for example (feeds bacteria too), which wouldn't be the case if phosphoric acid was highly damaging.

Most ionic (salt based) fertilizers actually increase microbial growth, unlike what you hear from many organic growers. One could make the argument that they may feed certain microbes over others, leading to loss of diversity or imbalance, but the research still is inconclusive.

I'm not recommending that you use synthetic inputs, but I think it's important to recognize that they do have benefit when used correctly.

 

[Farmerlion]

Phosphoric acid is allowed in organic production by the NOP for use in stabilizing fish hydrolysate, that's where the P content comes from. Is it organic? No.

So you can decide what works for you based on your own definitions. Another example of this is how seaweed extract powder is stabilized using potassium hydroxide.

As far as your microlife in the soil, small amounts would not have a detrimental effect. Fish hydrolysate is a great fungal food for example (feeds bacteria too), which wouldn't be the case if phosphoric acid was highly damaging.

Most ionic (salt based) fertilizers actually increase microbial growth, unlike what you hear from many organic growers. One could make the argument that they may feed certain microbes over others, leading to loss of diversity or imbalance, but the research still is inconclusive.

I'm not recommending that you use synthetic inputs, but I think it's important to recognize that they do have benefit when used correctly.

Kis, thank you for this great explanation. While I use( fish emulsions, leonardite, ground kelp and worm castings). Including live worms in my soil. With rain and lake water, my ph is very stable. The hydrolysate isn't a true organic. Yet in the amounts used it's so irrelevant.
There's no need for flushing or soil changing each season.
Peace. farmerlion

 

[Mañ'O'Green]

In my research into living self sustained I discovered that most rain water is highly polluted anywhere down wind of a city or highway. Your lake water is probably a better option.

 

[Farmerlion]

I'm so remote that my mailbox is three miles from my house.
Peace brother

 

[Eyes on Fire]

ALSO, consider the buffering capacity of your soil a well rounded soil can often handle early on until much is depleted high or even Lower PH watering.and when I did do PH I would swing it down or up but never made it exact.havent dont that in years n years but something so consider.or even amend next time with a little sweet lime(dolomite pulverized lime-Powdered) or garden pellet lime work well to to add capacity to your soil(s).