Ditylenchus dipsaci Symptoms on Red Clover (Trifolium pratense)
left: infected: right: healthy

D. dipsaci: inside cloverleaf (cleared with lactoglycerin)

D. dipsaci: Symptoms on Sugar Beet
left: healthy; right infected

D. dipsaci: on Topped Sugar Beet
Bottom: two healthy beets; Middle and background: total loss

D. dipsaci: Symptoms on Sugar Beet Top at Harvest Time

Globodera rostochiensis: Perineal Pattern of Cyst

G. pallida: Perineal Pattern of Cyst

D.dipsaci: Symptoms on Winter Barley

Caenorhabditis briggsae: Young Adult Female, 3 days old, SEM

C. briggsae:Old Adult Female, 3 weeks old, SEM