slurry nutrient values v bagged

[davidroberts30]

anyone got a easy way to work out the costs for slurry to the cost of bagged

 

[N.Yorks.]

RB209 would be a start:

RB209 Section 2 Organic materials | AHDB

Information on the nutrient content of organic materials, such as manures, compost and digestate.

ahdb.org.uk

 

[sidjon]

Simple enough?

 

[davidroberts30]

yeah i've got that far
how do i work out the cost of bagged to compare

 

[sidjon]

yeah i've got that far
how do i work out the cost of bagged to compare

Try the crap app from duchy college, as it has prices

 

[davidroberts30]

Try the crap app from duchy college, as it has prices

Hmmm 8 year old prices

 

[upnortheast]

Had our slurry analysed a couple of times.
almost identical to the numbers in RB 209
Noted the nutrients for 3000 gall / acre on the attached. sheet
Worth roughly ( I`m still imperial ) - 20 bags / tonne
3 bags 34% N 1 bag TSP 1.5 bag MOP

Assuming all at £250 / tonne ( insert your own price ) then the 3000 gall is worth circa £68.
Might be some arguement over availabilty of granules over slurry, I don`t know slurry spread in autumn will have lost nutrients over winter

Not that far away from @sidjon graphic above
Probably costs a bit more to spread slurry than fert.

 

[Headless chicken]

yeah i've got that far
how do i work out the cost of bagged to compare

Take price of MOP and TSP and N or Urea. £6 an acre contractors charging for spreading fert inc their diesel to give you an idea of a spread price

 

[davidroberts30]

Take price of MOP and TSP and N or Urea. £6 an acre contractors charging for spreading fert inc their diesel to give you an idea of a spread price

i ment how do i work out the NPK cost of my fert
i bought 25 5 5 @ £228

 

[davidroberts30]

Had our slurry analysed a couple of times.
almost identical to the numbers in RB 209
Noted the nutrients for 3000 gall / acre on the attached. sheet
Worth roughly ( I`m still imperial ) - 20 bags / tonne
3 bags 34% N 1 bag TSP 1.5 bag MOP

Assuming all at £250 / tonne ( insert your own price ) then the 3000 gall is worth circa £68.
Might be some arguement over availabilty of granules over slurry, I don`t know slurry spread in autumn will have lost nutrients over winter

Not that far away from @sidjon graphic above
Probably costs a bit more to spread slurry than fert.

so 4x applications and your at your limit!!!

 

[deleted user 837354]

so 4x applications and your at your limit!!!

4 applications of 3000 gallons is going some, surely?

 

[upnortheast]

i ment how do i work out the NPK cost of my fert
i bought 25 5 5 @ £228

Take the price of straights
Example calculation -
Say 34 % N @ £250 / tonne 250 / 34 x 25 = 183
60% MOP @ £250 250 / 60 x 5 = 21
48% TSP @ £250 250 / 48 x 5 = 26
So using those figures your 25.5.5 comes out at £230 / tonne
Need to get current prices to be accurate

 

[upnortheast]

4 applications of 3000 gallons is going some, surely?

Yep, I would guess you might get contamination & rejection problems.

 

[upnortheast]

so 4x applications and your at your limit!!!

What limit is that ?

 

[davidroberts30]

What limit is that ?

i thought i did work out that 250kg of N was 200 units/acre in our money
is your pen on your picture correct?

 

[upnortheast]

is your pen on your picture correct?

Aye, there is a column that gives units at 1000 gall acre

 

[woodylane]

30m3/ha of slurry gives 27kg of crop available N, 36kg of Phosphate and 75kg of potash.

 

[davidroberts30]

Aye, there is a column that gives units at 1000 gall acre

i still cant see where there's a discrepancy if 250kg/N is 200 units a acre
if the 61 cubes is correct then your 100units is wrong or visa versa

 

[davidroberts30]

30m3 of slurry gives 27kg of crop available N, 36kg of Phosphate and 75kg of potash.

2600G/A gives 21.6N, 29P and 60K

sorry i work in units

 

[woodylane]

2600G/A gives 21.6N, 29P and 60K

sorry i work in units

yes a lot of people still do