Publications for:

pest = Sonchus oleraceus (weed)
crop = Pea (Pisum sativum)

found 2 publications:

2006

Weed suppression in mixed cropped grain peas and false flax (Camelina sativa)
Weed Research (2006) 46 (6), 453-461
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2005

Host suitability of Sonchus spp. to the pea cyst nematode Heterodera goettingiana in Italy
International Journal of Nematology (2005) 15 (1), 107-109
pestinfo wiki