Organic Sources of Phosphate

[Cab-over Pete]

Aye up

The only source I know of for organic farmers is Gafsa (?)

Any more ideas?

Cheers, Pete.

 

[Brisel]

I think that's it for mineral forms. Useless on neutral to high pH soils that someone may have, er, kept well limed!

Fibrophos Kalphos and biosolids are not allowed. FYM? What standards is the farm to? OF&G or SA?

Approved Inputs For Organic Farms (soilassociation.org)
Download organic certification documents, record sheets, forms | OF&G (ofgorganic.org)

 

[Bogweevil]

Bone meal - too expensive for field crops though.

The trick is too raise P index before beginning conversion and keep it up with manure thereafter.

 

[Martyn]

We use sludge from the dairy processing must be other food waste with good P K.

 

[Agrivator]

Aye up

The only source I know of for organic farmers is Gafsa (?)

Any more ideas?

Cheers, Pete.

The ground-up bones of casualties from the battle-fields of Europe used to be used as a phosphate fertiliser. But I'm not sure if that would be allowed for organic farmers??
I would check with the Soil Association etc.

 

[Cab-over Pete]

And the dairy waste is organic?

The ground-up bones of casualties from the battle-fields of Europe used to be used as a phosphate fertiliser. But I'm not sure if that would be allowed for organic farmers??
I would check with the Soil Association etc.

I would imagine that source is getting a bit depleted by now.

 

[Martyn]

And the dairy waste is organic?

Approved by of&g

 

[Cab-over Pete]

Ok, thank you.

 

[Bogweevil]

Here you go - under permitted fertilisers form Soil Assoc:

I always feel that the so-called organic fertilisers based on wastes from conventional farms and farm products are a bit of a cheat. Excellent fertilisers for high value crops though particularly under protected cropping.

 

[Bogweevil]

Aye up

The only source I know of for organic farmers is Gafsa (?)

Any more ideas?

Cheers, Pete.

Apparently the aluminium calcium phosphate is mined on Christmas island amongst other places, never encountered it in real life.

 

[Treg]

Soft rock Phos is allowed.

 

[Cowcorn]

A dark night with the spreader usually at the weekend or on a bank holiday !!!

 

[Flat 10]

Here you go - under permitted fertilisers form Soil Assoc:

View attachment 944634

I always feel that the so-called organic fertilisers based on wastes from conventional farms and farm products are a bit of a cheat. Excellent fertilisers for high value crops though particularly under protected cropping.

Couldn’t agree more. I worked somewhere with an ‘organic’ sprayer too....

 

[Sid]

Aye up

The only source I know of for organic farmers is Gafsa (?)

Any more ideas?

Cheers, Pete.

Basic slag ,its loaded with nutrients just ask the biggest wheeler dealer in West Wales!
Depends how quickly the Phosphorus is needed.
Best option for quick is bulky manure sources .