Garlic Bloat Nematode
The stem and bulb (bloat) nematode (Ditylenchus dipsaci) is a destructive plant parasitic nematode of many crops, specially garlic, onion and leek. It is widely distributed in temperate production regions of the world and has been known and studied intensively for a long time, since 1877 in Europe. This nematode occurs in many biological races with different host ranges and crop damage potential. The garlic and onion race of D. dipsaci beside infecting garlic, onions, leeks, and chives; it also attacks celery, certain varieties of peas and lettuce, hairy nightshade, Canada thistle, flower bulbs and other plant species.