Evaluation of Legumes Common to the Pacific Northwest as Hosts for the Pea Cyst Nematode, Heterodera goettingiana
AbstractSeventeen leguminous species common to the Pacific Northwest were evaluated as potential hosts of the pea cyst nematode, Heterodera goettingiana, in both greenhouse and field experiments. In all experiments, juveniles of H. goettingiana penetrated roots of these 17 species with the exception of greenhouse-grown chickpea. Nematodes molted and developed into swollen third-stage or fourth-stage juveniles in many of the plants, but cyst development occurred only in the field on green pea, edible dry pea, and faba bean. More H. goettingiana cysts developed on fava bean than on green pea or edible dry pea. In H. goettingiana-infested soils, cropping sequences that include fava bean and pea should be avoided. However, certain legumes, such as winter vetch, may have the potential of serving as trap crops for H. goettingiana in this region.
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