Publications for:

pest = Rumex (weeds)
beneficial = Ramularia rubella (weed pathogen)

found 2 publications:

2000

Beetle grazing reduces natural infection of Rumex obtusifolius by fungal pathogens
New Phytologist (2000) 146 (2), 325-333
publishers website - pestinfo wiki

1998

Clumped distributions of fungal pathogens on the foliage of the wild plant Rumex obtusifolius in the field
International Congress of Plant Pathology (1998) 7th meeting, section 2.4
pestinfo wiki