Additions to the Weed Host Range of Meloidogyne hapla. W. H. Edwards, Graduate Student, Department of Plant Pathology, North Carolina State University, Raleigh 27695. R. K. Jones, Professor, Department of Plant Pathology, North Carolina State University, Raleigh 27695. Plant Dis. 68:811-812. Accepted for publication 27 March 1984. Copyright 1984 The American Phytopathological Society. DOI: 10.1094/PD-68-811.

Susceptibility of 11 broadleaf weed species to Meloidogyne hapla was evaluated in the greenhouse. Common cocklebur (Xanthium pensylvanicum) and ivyleaf morning glory (Ipomoea hederacea) supported the heaviest reproduction and were important reservoirs of root-knot inoculum. Dog fennel (Eupatorium capillifolium), pitted morning glory (I. lacunosa), spotted spurge (Euphorbia maculata), velvetleaf (Abutilon theophrasti), spurred anoda (Anoda cristata), and jimsonweed (Datura stramonium) were parasitized by M. hapla but supported low to moderate egg production. Sicklepod (Cassia obtusifolia), prickly sida (Sida spinosa), and pokeweed (Phytolacca americana) were nonhosts.