Rothamsted Research

where knowledge grows

Weeds on Broadbalk & Parkgrass

On Section 8 (‘No weedkiller’), about 50 species occur with black-grass and common poppy being the commonest weeds on most plots.  However, for many other species, there are striking differences in frequency between plots due to ecological adaptation to N availability.  Section 8 also provides an invaluable reserve for several species that are rare, or declining, nationally.  These include corn buttercup, shepherd’s needle and fine-leaved sandwort.  Broadbalk is also the only site in the UK where corn cleavers has been recorded in recent years.

Long term classical experiments

See also