Anyone know of research into nutrient values of different plants used as fertilisers?

[hologramgarden]

Most people know about comfrey being a good all round fertiliser & stinging nettles being high in nitrogen, but are there any studies or research into the nutrient values of different plants used as fertilisers?

You often read comfrey is such a great fertiliser because of its deep roots, surely that means plants like horsetail would be very good too?

Are there any lists of the NPK & micronutrient values of different 'weeds' used as fertilisers?

[Nicos]

Is this thread any use to you?

https://www.growfruitandveg.co.uk/gr...ues_96892.html

[Derbydal]

looks like nettles are as good as owt for nowt to make tea out of ! atb Dal.

[Snadger]

As much as the deep rootedness (which nettles aren't) I believe its the make up of the leaf matter of the comfrey and nettles when broken down, that gives the available Nitrogen and Potassium.
Other plants will also break down and give N & K but I assume that gardeners have found out that these two plants give the best 'Bang for your Buck'?

[Snadger]

Is this thread any use to you?

https://www.growfruitandveg.co.uk/gr...ues_96892.html

Nice one Nicos!