Publications for:

pest = Viola arvensis (weed)
crop = Beet/sugarbeet (Beta vulgaris)

found 2 publications:

2017

Sugar beet yield loss predicted by relative weed cover, weed biomass and weed density
Plant Protection Science (2017) 53 (2), 118-125
publishers website - pestinfo wiki

2006

Broadleaf weeds and sugar beet response to phenmedipham, desmedipham, ethofumesate and triflusulfuron-methyl
Agronomy Research (2006) 4 (special issue), 159-160
publishers website - pestinfo wiki