Publications for:

pest = Matricaria chamomilla (weed)
crop = Barley (Hordeum vulgare)

found 2 publications:

2012

Using precision farming technology to quantify yield effects attributed to weed competition and herbicide application
Weed Research (2012) 52 (1), 6-15
publishers website - pestinfo wiki

2004

Tolerance of competitive spring barley cultivars to weed harrowing
Weed Research (2004) 44 (6), 446-452
publishers website - pestinfo wiki