Damage threshold established at 1 nematode per 100 cm3 soil (Tylka et al., 2011). 1-5 nematodes/100 cm3 soil cause moderate ldamage, more than 25 cause severe damage (Niblack, 2003).
The nematode is reported to acquire Brome Mosaic Virus (BMV) from infected barley and transmit the virus to healthy barley (Huff et al., 1987). However, that report has been questioned by other authors (Ye and Robbins, 2004).