How much nitrogen?

neilo

Member
Mixed Farmer
Location
Montgomeryshire
The problem is I have met farmers who are worried they will be forced to change how they operate, reduce cow numbers or involve significant expense.

Unfortunately WAG are using a sledgehammer to crack a nut, but, some dairy farms have expanded numbers without regard to the slurry output, to the extent that they have 2 weeks storage FFS! They are the guys that have brought this down on everyone.
 
Unfortunately WAG are using a sledgehammer to crack a nut, but, some dairy farms have expanded numbers without regard to the slurry output, to the extent that they have 2 weeks storage FFS! They are the guys that have brought this down on everyone.

Ooooff!

You'll be wanting to borrow my TFF-approved stab vest after a post like that!
 

Sid

Member
Livestock Farmer
Location
South Molton
Unfortunately WAG are using a sledgehammer to crack a nut, but, some dairy farms have expanded numbers without regard to the slurry output, to the extent that they have 2 weeks storage FFS! They are the guys that have brought this down on everyone.

And then you'll get to the inspectors personal interpretation of the rules.
 

neilo

Member
Mixed Farmer
Location
Montgomeryshire
They will be . Dairy farmers have traditionally used a lot of N apart from the organic ones that is , used to be 2 units n per acre per day when we were intensive dairy

Most of the industry has moved on from those dark days though.

It makes me cringe at the waste every time I see slurry tankers plastering the stuff on in the middle of winter, to ‘get rid of it’. Those nutrients are largely wasted as they leach out/run off, which means they are ending up in water.
If those people started viewing that slurry as fertiliser, they will find they reduce their fertiliser bills dramatically.
 

Derrick Hughes

Member
Location
Ceredigion
Most of the industry has moved on from those dark days though.

It makes me cringe at the waste every time I see slurry tankers plastering the stuff on in the middle of winter, to ‘get rid of it’. Those nutrients are largely wasted as they leach out/run off, which means they are ending up in water.
If those people started viewing that slurry as fertiliser, they will find they reduce their fertiliser bills dramatically.
Would not a dairy farm apply around 80 units N acre for a cut , sorry I still think in old money
 

neilo

Member
Mixed Farmer
Location
Montgomeryshire
Would not a dairy farm apply around 80 units N acre for a cut , sorry I still think in old money

Old money means little to me I’m afraid.

My point was that slurry/separated liquid applied in the growing season, rather than dumped all winter to get rid, could replace much of that bagged N. Price of fert where it is surely makes it even more sensible to replace it by using slurry more sensibly.
 
I think pure n just takes an goodness out the soil that's in it, unless you dung it as well, l just put 25,5,5 on everywhere cut or grass, 3 hundred weight for cutn once and 2 on grass.
 

neilo

Member
Mixed Farmer
Location
Montgomeryshire
I think pure n just takes an goodness out the soil that's in it, unless you dung it as well, l just put 25,5,5 on everywhere cut or grass, 3 hundred weight for cutn once and 2 on grass.

N is just one nutrient, and obviously others have to be supplied in balance. Soil testing will tell you what’s best applied, but very rarely is the ‘farmers’ favourite’ of 20:10:10 or 25:5:5 appropriate according to my soil testing guy/agronomist, but a healthy premium is paid for the convenience of having that imaginary ‘all in one’ fert.
If you need Phosphate, apply it. If you’re short of Potash, apply it. However not many farms will need it in the ratios supplied in the above compounds.

Personally I always apply straight N (often with S) but have MOP for those (usually mowing) fields needing extra potash, TSP where extra phosphate is needed, and apply Fibrophos on rotation for maintenance P&K.

FYM is in short supply here as my stock spread their own as much as possible.
 

Derrick Hughes

Member
Location
Ceredigion
I always see it as Nitrogen taking money out of the bank and P & K back in , even if you don't soil test you will have an idea about your land by whats growing and whats coming off , straight N and no P & K is like robbing the bank
 
Think they just wanted to know how much N to put on grazing land!

Personally I put on 125kg/ha of a N:S blend per month from April to August

Just seen this thread, are you saying you apply 125kg/ha every month?! So 625kg/ha (250kg/acre) in total through the season?! That's more than I put on wheat?! 🤔 how high are your stocking rates to justify requiring that level of input?!
 

N.Yorks.

Member
Just seen this thread, are you saying you apply 125kg/ha every month?! So 625kg/ha (250kg/acre) in total through the season?! That's more than I put on wheat?! 🤔 how high are your stocking rates to justify requiring that level of input?!
Depends if he's talking about kg of N per ha or kg Ammonium Sulphate per ha...?

If he's talkin about 125kg/ha of actual fert, say 27% N & 12% SO3 then thats 34kg N/ha and 15kg SO3/ha.
 
Depends if he's talking about kg of N per ha or kg Ammonium Sulphate per ha...?

If he's talkin about 125kg/ha of actual fert, say 27% N & 12% SO3 then thats 34kg N/ha and 15kg SO3/ha.

Yes but that's still every month for 5 months. So 170kg N/ha total. Which is bang on what I'd put on a wheat crop. Just seemed a lot for grassland to me?!
 

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