Publications for:

pest = Veronica hederifolia (weed)
crop = Barley (Hordeum vulgare)
country = Spain (continental)

found 2 publications:

2008

Weed harrowing in winter cereal under semi-arid conditions
Spanish Journal of Agricultural Research (2008) 6 (4), 661-670
publishers website - pestinfo wiki

1999

Weed seedbank response to crop rotation and tillage in semiarid agroecosystems
Weed Science (1999) 47 (1), 67-73
pestinfo wiki