Should we farm without N?

Hilly

Member
I’d suggest listening to it, Will, in fact I was thinking of you and wondering what you’d make of it when I was listening. It’s fascinating stuff and straight from the researcher’s mouth
I listened but I nodded off, the jist I got was it’s all about the potassium if your potassium is right you don’t need nitrogen , is that right or was I dreaming ?
 

Hilly

Member
We have plenty slurry but without some bagged N then grass will not yield much for silage, at least not 2 cuts.
I mixed hen sh!t in my slurry one ton per acre them acres yielded much more silage infact the most silage I have ever had over the fields that got 4 hundred weight 24 5 5 or something similar . Hen sh!t is fantastic
 

Banana Bar

Member
Arable Farmer
Location
Bury St Edmunds
. Assuming that you want to grow enough food to feed people that is...[/QUOTE]

And there lies a much bigger point. There too many people but I don’t see many putting their hand up to be sacrificed!
 

BRB John

Member
BASIS
Location
Aberdeenshire
World population will increase to around 10 billion before the Third world is rich enough and their birth rate declines. Nitrate fertilisers will be in sue for a long time yet.
Actually this week in the news they think it will cap at 9 billion by 2100. Most of that will be in Africa (tripling its population by 2100) Europe and North america will see a reduction in numbers...
 
Alt of the N debate is down to circumstances.
If you're on a pittance of a rent or don't have land costs allocated to an enterprise you can give cows 2ac each and farm extensively without much in a way of management.

If you're paying a stiff rent or mortgage and have to stock heavier, you either have to use N or work on alternatives.

We're not totally off N but we are working towards it on grassland.
Cereals are the weak link for us.
 

The Ruminant

Member
Livestock Farmer
Location
Hertfordshire
Link not working for me any chance of pointing me to the right page? Tia
It’s the “Regenerative Agriculture Podcast” with John Kempf.

This episode has the catchy title of “The fallacy of mainstream potassium and nitrogen fertilisation with Richard Mulvaney”

my link was to the podcast on Apple but I’m sure it will be on several other platforms too
 

The Ruminant

Member
Livestock Farmer
Location
Hertfordshire
Alt of the N debate is down to circumstances.
If you're on a pittance of a rent or don't have land costs allocated to an enterprise you can give cows 2ac each and farm extensively without much in a way of management.

If you're paying a stiff rent or mortgage and have to stock heavier, you either have to use N or work on alternatives.

We're not totally off N but we are working towards it on grassland.
Cereals are the weak link for us.
I’d argue that if people want to cut out N they shouldn’t “give cows 2ac each and farm extensively without much in the way of management” but instead should manage the operation twice as hard as they did when they have the crutch of N to support them, and also work hard at educating themselves so that they understand how healthy soils work and can work for them.

Mycorrhizal fungae are the key to everything good. When you understand mycorrhizal fungae, you are starting to understand soil.

You’re doing well to be reducing your N on grassland. As I learn more about the fungae, I understand why, for most, arable will be the weak link. There are ways round it but it takes a lot of left-field thinking..... hardly anyone is prepared to do this.
 
I’d argue that if people want to cut out N they shouldn’t “give cows 2ac each and farm extensively without much in the way of management” but instead should manage the operation twice as hard as they did when they have the crutch of N to support them, and also work hard at educating themselves so that they understand how healthy soils work and can work for them.

Mycorrhizal fungae are the key to everything good. When you understand mycorrhizal fungae, you are starting to understand soil.

You’re doing well to be reducing your N on grassland. As I learn more about the fungae, I understand why, for most, arable will be the weak link. There are ways round it but it takes a lot of left-field thinking..... hardly anyone is prepared to do this.
That's more or less what I was getting at.
You can use N
You can go extensive
Or you can work on alternatives
 

Rob Garrett

Member
Mixed Farmer
Location
Derbyshire UK
I’d argue that if people want to cut out N they shouldn’t “give cows 2ac each and farm extensively without much in the way of management” but instead should manage the operation twice as hard as they did when they have the crutch of N to support them, and also work hard at educating themselves so that they understand how healthy soils work and can work for them.

Mycorrhizal fungae are the key to everything good. When you understand mycorrhizal fungae, you are starting to understand soil.

You’re doing well to be reducing your N on grassland. As I learn more about the fungae, I understand why, for most, arable will be the weak link. There are ways round it but it takes a lot of left-field thinking..... hardly anyone is prepared to do this.
2020 pea/barley mix pic. below. Last year yielded 3t/acre. No bagged N. Spring oats averaging 2.5t/acre, no bagged N. Roughly £30/t gross cost of production, non organic plough based system.
IMG_20200717_174726_4.jpg
IMG_20200717_175000_8.jpg
 

Rob Garrett

Member
Mixed Farmer
Location
Derbyshire UK
A really interesting podcast here about the use of N and K and how soils and organic matter responds.

Really thought-provoking and confirms a lot of anecdotal things we and other farmers find.
Now that is hellish interesting, top signposting, thank you. I feel a Potassium (Sulphate of Potash not MOP) strip trial is needed in my Red Clover Ley & Pea/Barley mix.

FYM in soil was said to be higher in Amino Sugar N, wonder if compost replaced FYM you would get higher or lower Amino Sugar N?
 

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