Problem

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Black-grass   Black-grass is the most important grass weed infesting cereal and oilseed rape rotations in the UK.
Cleavers Cleavers have long caused problems to oilseed rape growers, due to the competitive nature of the weed, the way it can grow across the canopy late in the season and the relatively limited number of control options.
Mayweed Mayweed species are commonly found, unsightly and competitive with the crop.
Thistles Yield loss and harvesting difficulties can be caused in oilseed rape by infestations of Sow-thistle and Creeping thistle.