Reproduction of Root-Knot, Lesion, Spiral, and Soybean Cyst Nematodes on Sunflower. E. C. Bernard, Department of Entomology and Plant Pathology, University of Tennessee, Knoxville 37901-1071. M. L. Keyserling, Department of Entomology and Plant Pathology, University of Tennessee, Knoxville 37901-1071. Plant Dis. 69:103-105. Accepted for publication 25 September 1984. Copyright 1985 The American Phytopathological Society. DOI: 10.1094/PD-69-103.

The ability of sunflower cultivars to support reproduction of Meloidogyne arenaria, M. hapla, M. incognita, M. javanica, Helicotylenchus dihystera, Heterodera glycines, and Pratylenchus alleni was investigated in greenhouse tests. All nematode species except H. glycines reproduced well on sunflower, although some variability occurred among the cultivars. Among Meloidogyne spp., reproduction of M. javanica was highest, followed by M. arenaria, M. incognita, and M. hapla. In the field, P. scribneri and Helicotylenchus pseudorobustus increased substantially in the sunflower rhizosphere.