Quantification of nodulation in red clover (Trifolium pratense), white clover (T. repens), lucerne (Medicago sativa) and black medic (M. lupulina) in a range of 10 UK farm soils

Soil was a collected from 10 organic farms across the UK and evaluated for the presence of compatible rhizobia for red and white clover, lucerne and black medic (aka yellow trefoil). The data details nodulation of plants grown in soil solutions from each farm, in triplicate, compared to control inoculum