Harbouring insect pests & diseases
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Weeds may act as a host for diseases and insect pests which affect nearby crop plants (See Table).


Weeds which act as hosts to various crop diseases.
Weed Crop Disease or pest
Black grass (Alopercurus myosuroides) Rye Ergot fungus
Chickweed (Stellaria media) Many crops Cucumber mosaic virus
Fat hen (Chenopodium album) Field beans Black bean aphids
Numerous weeds Numerous crops Nematodes
Wild oats (Avena fatua) Cereals Smuts and mildews

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Steve Adkins