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    Rye brome [Bromus secalinus]

    Biennial, or annual bunch-forming seed grass. Prefers nitrogenous, loose to loamy soils. Germinates in the fall. Minimum soil tillage promotes spread of this grass.


    Rye brome - image 1

    Rye brome - image 1

    Rye brome - image 2

    Rye brome - image 3

    Rye brome - image 4

    Pest Profile

    • About the pest


      The youngest leaf is rolled up (Picture 1). Leaves yellow-green with scattered hair on top surface (Picture 2). Leaf sheaths generally hairless and closed. Ligules are short, serrated and yellow to medium-brown. Auricles absent. The inflorescences are erect, loosely arranged panicles (Picture 3). The glume is 5-10 mm in size, hairy to non-hairy with a terminal awn or no awn (Picture 4). Each plant produces approx. 1,000 seeds that remain viable for only approx. 1 year in the soil.

      Symptoms & Diagnosis


      Winter cereals, winter rapeseed.