First Report of Meloidogyne graminicola in Mississippi. G. L. Windham, USDA-ARS, Mississippi State, MS 39762. A. M. Golden, USDA-ARS, Beltsville, MD 20705. Plant Dis. 74:1037. Accepted for publication 2 July 1990. Copyright 1990 The American Phytopathological Society. DOI: 10.1094/PD-74-1037C.
In May 1985, Meloidogyne graminicola Golden & Birchfield, the
rice root-knot nematode, was found on white clover (Trifolium repens
L.) in a pasture in Oktibbeha County, Mississippi. The nematode
was cultured on white clover in the greenhouse. Clover plants were
inoculated with single egg masses, and the nematode infected and
reproduced on all plants. White clover is an excellent host and is
severely galled by the nematode. Although commonly found in the
rice-producing areas of Asia, M. graminicola has been detected in
only two other southeastern states in the United States (1,2). Previously
reported hosts in this country include bush bean (Phaseolus vulgaris
L. var. humilis Alef. ) and a number of hosts in the Gramineae family
(1). This finding is the first report of a Trifolium sp. as a host for
the rice root-knot nematode.