Knowledge Hub Article

Couch - Damage

Dense infestations of Couch may produce several hundred heads/m2 reducing cereal yields by 25% or more. 

High populations of plants can slow harvesting and the rhizomes interfere with cultivations and the harvesting of root crops by getting wrapped around equipment.  Couch acts as alternative host to the cereal take-all fungus which can have implications for the value of break crops in cereal rotations and take-all decline.