What's the NPK content of cut clover?

Hi I'm considering the sense of setting aside a bit of land as a permanent clover sward. I'm thinking I could mow this periodically and add the stems and leaves to my growing beds as a mulch, leaving the root to re-grow.

I realise traditionally you grow it as a cover crop and then dig it it. I also know that the nitrogen fixation takes place as part of a symbiotic relationship with the roots and it's the destruction and decomposition of the root that would release most Nitrogen.

However the Clover stem and leaf must contain some Nitrogen? Does anyone know what the wet % is? I could then compare it to manure: http://www.allotment-garden.org/compost-fertiliser/npk-manures-compost.php

Bonus points if anyone can find the PK figures too..

I have googled but without any success.

I presume that cut clover would have approximately the same values as pea greens because they are closely related. We can look up pea greens via the USDA. The greens are about 80% water. Average content of N in protein is around 16%, so 5.4% protein times 16% Nitrogen in protein = 0.9, therefore...

NPK = 0.9, 0.1, 0.2

Alfalfa pellets are considered 3-0.5-3, so that is another data point saying Joseph is in the ballpark.

Plant availability is based on the soil microbes, not just the chemical availability tests, so organic matter has a MINIMUM of the NPK numbers and can be much higher if your soil has the proper life in it.

I do the same thing, as I have clover growing in pathways and ditches and lawn and just about everywhere I can.

That's great, thanks all. gives me some figures to think about.