Publications for:

pest = Lolium perenne perenne (weed)
crop = Beet/sugarbeet (Beta vulgaris)

found 2 publications:

2002

Sugarbeet yield response to competition from Sinapis arvensis or Lolium perenne growing at three different distances from the beet and removed at various times during early growth
Weed Research (2002) 42 (5), 406-413
publishers website - pestinfo wiki

1997

Arable weeds identified as new sources of beet mosaic potyvirus in Greece
Annals of Applied Biology (1997) 130 (2), 255-260
publishers website - pestinfo wiki