I shall take you a photo of the meadow tomorrow. Though I say it myself it looks great. Just wish I could find someone to make small bale hay
And my geese eat docks and also buttercup roots.
When I moved back it was full of Creeping thistle and Scottish thistles plus dock from literally end to end. When I bought my first Jersey Cow I could never find her and had to walk the field till I cam across her
I have never used sprays, but simply top the field at the appropriate time. The old folk wisdom is that weeds cut on or near the full moon nearest Midsummer day will not reappear, and though I wouldn't take this literally, if you think about it there is sense there.
Plants with earlier seeding - such as thistles and docks tend to run up to seed at midsummer, and it is most likely to rain around a full moon.
Weeds cut then will have expended the vast majority of their energy trying to seed, and if cut probably won't have the resources for further strong growth. Anyway it worked for me.
If I wanted to be rid of the buttercups I would use lime, and seaweed meal (assuming I could get it) and if not a good mucking. But I like the mix of sorrel, trefoil, cuckoo flower and red and wild white clover etc that goes with my buttercups