Fibrophos v Sewage sludge

Can some one answer a question ref Fibro
If it is slow release and 5% soluble and breaks down over a long time
How do you account for it in soil samples
If it shows up and not all available does it distort the true p k values in soil
Been asked to ask the question
We have been using it but next door wants us to spread some but he is not convinced it works or nutrient available
🤦‍♂️🤷‍♂️🤷‍♂️🤷‍♂️
@Mounty
 

clemmo

Member
Can some one answer a question ref Fibro
If it is slow release and 5% soluble and breaks down over a long time
How do you account for it in soil samples
If it shows up and not all available does it distort the true p k values in soil
Been asked to ask the question
We have been using it but next door wants us to spread some but he is not convinced it works or nutrient available
🤦‍♂️🤷‍♂️🤷‍♂️🤷‍♂️
@Mounty

Depends on test and lab, Most standard soil samples will be testing for available nutrients
 
I’m no expert and a little bit of knowledge is dangerous, but I’ve been told this.

When people say Fibrophos is not water soluble they are correct. It is however citric soluble. By lucky happenstance, the roots of your growing crops exude citric acid which, upon contact with the nutrients in Fibrophos, render those nutrients available to the plant.

The low water solubility of Fibrophos means it doesn’t leach from the soil easily.

I was told that by an independent soil health consultant and independent agronomist.
 

Kevtherev

Member
Location
Welshpool Powys
I’m no expert and a little bit of knowledge is dangerous, but I’ve been told this.

When people say Fibrophos is not water soluble they are correct. It is however citric soluble. By lucky happenstance, the roots of your growing crops exude citric acid which, upon contact with the nutrients in Fibrophos, render those nutrients available to the plant.

The low water solubility of Fibrophos means it doesn’t leach from the soil easily.

I was told that by an independent soil health consultant and independent agronomist.
No doubt our resident expert will be along soon to give us his unbiased opinions.
 

Brisel

Member
Arable Farmer
Location
Midlands
Depends on test and lab, Most standard soil samples will be testing for available nutrients

The standard English lab test is for Olsen P, so good enough IMO. That’s meant to be the best measure of what should be available to the plant, not the total P in the soil. It’s just a lab test and the reality of soil chemistry and biology is far more complex.

E462B07F-9907-44D6-AC99-A289D0CF6287.jpeg
 

Yale

Member
Livestock Farmer
I’ve had a few loads of Kalphos,seen absolutely no visible results from spreading it.

Where we tipped the loads on a grass field there has been no difference in growth apart from it burning the grass off where it had been tipped a few days.

Does it work?

In my opinion just a different type if lime as I think the nutrients are too locked up to be released.

I was getting it at mid 20’s £ per tonne and gave up on it favouring spreading more decent grade lime instead.

I might be totally wrong. :unsure:
 

Pebd99

Member
Location
Aberdeenshire
Spring of 2018 we took a load of fibrophos to see if it made a difference. 0-14-14 I think the grade is we get here. Had 5t left over from spreading spring barley fields so spread it onto a grass field but ran out 24m width from the end of the field. In the autumn we sprayed it off and sew swift for grazing ewes onto it. The growth difference between that areas was significant. The area that got none hardly came away any whereas the area that got was off like a shot.
I use it for all my autumn sowing now and quite a lot of the spring stuff as well. Quiet heavy handed with the rate at 0.9-1t/ha but works for us.
 
Spring of 2018 we took a load of fibrophos to see if it made a difference. 0-14-14 I think the grade is we get here. Had 5t left over from spreading spring barley fields so spread it onto a grass field but ran out 24m width from the end of the field. In the autumn we sprayed it off and sew swift for grazing ewes onto it. The growth difference between that areas was significant. The area that got none hardly came away any whereas the area that got was off like a shot.
I use it for all my autumn sowing now and quite a lot of the spring stuff as well. Quiet heavy handed with the rate at 0.9-1t/ha but works for us.

It is good stuff. Sewage is also good.
 

ajd132

Member
Arable Farmer
Location
Suffolk
We use both but I worry about the amount of calcium in p grow, our soils are already extremely high/off the charts in calcium and it causes a lot of issues with nutrient availability.
 
I spoke to them just over a year ago, apparently it's shipped in from the Netherlands.

I would imagine gas prices for incineration and transport costs may have killed off the viability.

Could be completely wrong though.
I'm on the understanding that a leading rendering company was promoting the product? Is tigerfert the ash produced from incinerated meat & bone meal?
 

PSQ

Member
Arable Farmer
ash produced from incinerated meat & bone meal

Has anyone got any experience of J-Pash?
It's supposedly bone meal ash, probably not wise for grassland.

Fibrophos is getting harder to source and increasing in cost (like everything else), and potassic lime is a 'no no' north of the border. Just looking for other bulk P&K sources, and to boycott TSP and MoP with their bulls**t pricing.
 

SFI - What % were you taking out of production?

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Red Tractor drops launch of green farming scheme amid anger from farmers

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As reported in Independent


quote: “Red Tractor has confirmed it is dropping plans to launch its green farming assurance standard in April“

read the TFF thread here: https://thefarmingforum.co.uk/index.php?threads/gfc-was-to-go-ahead-now-not-going-ahead.405234/
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