Symposium The Broadbalk long-term experiment at Rothamsted: what has it told us about weeds?

The Broadbalk experiment was started in 1843 to investigate the relative importance of different plant nutrients (N, P, K, Na, Mg) on grain yield of winter wheat. Weeds were controlled initially by hand hoeing and fallowing, but since 1964, herbicides have been applied to the whole experiment with the exception of the 18 plots on Section 8. Approximately 130 weed species have been recorded on Broadbalk and about 30 of these are currently...