NPK what formulae ??

Wouldn't it entirely depend on what you intend to grow in the beds? Though to be honest manure isn't just about the nutrients it can improve your soil. I have heavy clay and it and improves the texture dramatically. It also helps hold moisture if you have sandy soil. It does take a bit of work though given the amounts you need to use as you day tho.

Thats why I asked :-)
I know certin formulas are suited to fruit trees and grass for instance.

I just wondered what was best for general veggies.

For green things, you want more N. For fruit, more P and K.
And therein lies the quandary as far as veg is concerned. For tomato plants, you want to be aiming more for N in the early days, but when they start to flower, you want to be aiming more for P and K. So in theory, if you were doing it right, you'd have more than one bag or bottle of fertiliser.
For cabbage, for example, it's pretty straightforward, more N right through.

What I do is go for whatever I can find at my local agricultural co-op so long as it has trace elements in as well, not just N, P and K. Then, for plants that like P and K (onions, for example, like a bit extra in my experience, not sure if that's a proven 'fact', mind) or fruiting plants (toms, peppers, courgettes, etc.), I add P and K in the form of hardwood ash as an addition when working in my granular fertiliser and later on at the appropriate time.

This is not an organic way to do things... But my soil is low on boron it seems (my brassicas do much better when I add some), so I've decided to just go with it.

Have a read of this...……………
https://www.growfruitandveg.co.uk/gr...ml#post1600413

Hi Keat,
As SS said muck also helps improve the soil rather than just add nutrients. You can make your own Nitrogen fertiliser if you have access to nettles and I combine Comfrey juice nettle juice and weed juice to make a generic fertiliser.

I don’t use manure,I use blood,fish & bone a balanced fertiliser. This year & last year I didn’t use it in the veg beds,I’m seeing how fertile my soil is with nothing but leaf fall & pruning mulches,it’s been alright but I have been using seaweed liquid feed & tomato feed so they have had something.

In the farming world the farmers work out what levels of NPK their crops need in weight and usually by the acre/hectare. So if an acre of a crop needs 10lbs of nitrogen, 5lbs phosphorus and 5lbs potassium then if you used a 10:5:5 fertiliser you would need 100lbs per acre. This isn't taking into account the levels of nutrients already in the soil, which in a lot of farm land might not been much as they have been farmed for a while with only fertilisers and no added organic matter.

Different vegetables need different levels of the three main nutrients plus other micro nutrients so the levels of NPK needed will vary from crop to crop. Nitrogen is associated with green leaves but is used anywhere that proteins are made (e.g. pulses, chrlorophyl, grains/seeds, nuts), potassium is often associated with fruits and flowers but it plays an important role in a number of different plant functions such as photosynthesis, Phosphates are associated with root growth but is also used in energy transpher and cell reproduction as well as respiration. This shows that it's not so easy to say "Oh, leafy greens then it's nitrogen, roots then its mostly superphosphate".

You will also have to account for run off. Nitrogen is readily dissolved in water and rain water will wash it away into the water system which can pollute local water courses.

As I said above, alot of farmland is dependant on chemical fertilisers because of the breakdown of organic material. The carbon component of soil is constantly being digested by bacteria - which happens faster when the soil is disturbed and exposed to air/oxygen. The organic component helps to absorb and hold nutrients so needs to be replenished - this is what adding horse much or compost also helps with.

National Growmore was developed durnig WW11 to help gardeners to feed the nation cheaply.

Growmore is a balanced fertiliser (7-7-7) and is the inorganic version of Blood, fish and bone meal (BFB) which has a similar effect..

Although BFB is organic it is animal based so vegans would not be happy to use it.

My personal preference is to use Comfrey Tea and nettle tea. I also use chicken manure pellets and sometimes wee in the watering can and fill up with water to give my brassicas a nitro boost.

I think I will skip the invite for dinner thanks...…………………………..

All farmers field crops were fertilised with 'night soil' at one time and people were happy to eat the crops.
At least I am not like Bob Flowerdew who saves his pee in pop bottles to be used for fertiliser at a later date.

I actually add to my own compost heap when no ones looking lol

All I'm gonna say is... I bought this at the weekend, on advice from VC quite a while ago lol

All our night-time pee goes in the compost bin. Makes sense.

Back on topic, I'm pondering on not using muck any more for my organic matter but bales of hay. Just pile on top as a mulch. I had loads in my first year and it made a tremendous difference to the soil quality and was easy to handle and apply. Could you get some, as well as your fertiliser, keat?