[
Plant Disease Reporter,
1975]
Twenty-five genera of nematodes were identified in six vegetable crops (carrot, pea, broccoli, rutabaga, Brussels sprouts, cauliflower) at fifty-six locations in Prince Edward Island (P.E.I.). Root lesion nematodes, Pratylenchus penetrans, were found in the soil at all locations and accounted for about 19% of the total nematode fauna. Meloidogyne hapla were recovered in only a few samples in low numbers, as were nematodes in the order Dorylaimida which accounted for about 5% of the total population. Non-stylet bearing nematodes made up 55% of the total and most of these were in two genera, Caenorhabditis spp. and Cephalobus spp. Carrot soils harbored the highest number of root lesion nematodes and pea soils had the least; 4726 and 547/kg of dry soil, respectively. Pea roots, however, had 2647/g dry root of these nematodes. No root lesion or other endoparasitic nematodes were recovered from the tap roots of carrots or from rutabagas. Some carrot and pea fields appeared to have lower than average yields where root lesion nematodes were recovered from soil and roots in very high numbers.