Symptoms: Symptoms on pearl millet are not described in the primary citations. Reduced vigor is implied. General symptoms on maize include poor root growth, necrotic root lesions, root decay, moderate stunting (Shurtleff 1980).
Pathogen and disease characteristics: Endoparasitic nematode. Feeds mainly on rootlets and roots and occasionally on root hairs, rarely on tips of root cap cell masses. Its head region is embedded deep into the plant's cortex while it feeds on the main roots. Superficial feeding, confined to epidermal cells, occurs occasionally. Prolonged feeding at the same site did not cause any necrosis on pearl millet roots.
Host range: Pearl millet, sorghum, sudangrass. Also other grasses and cereals, sugarcane, legumes, tobacco, tomato, potato, strawberry, tree fruits, pines (Shurtleff 1980). Consult other references for additional hosts.
Geographic distribution: USA, India.
Nomenclature discrepancies: Alternative common name: Lesion nematode.
Seed transmission: Not transmitted by seed.
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Original posting: June 5, 1999.