Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Diseases of Pearl Millet in Georgia.

Abstract

In this review of the diseases of pearl millet (Pennisetum glaucum) in Georgia it is stated that the most common leaf spots are those caused by Helminthosporium stenospilum and H. sacchari [R.A.M., 33, p. 102], occurring chiefly in the Coastal Plain, and Cercospora penniseti, most serious in the Piedmont. Zonate leaf spot (Gloeocercospora sorghi) [cf. loc. cit.], Rhizoctonia blight (R. [Corticium] solani and R. zeae), southern blight (Sclerotium rolfsii[Athelia rolfsii]) [loc. cit.], and rust (Puccinia penniseti), not previously recorded in the United States [C.M.I. map No. 225], are all of minor importance. Leaf moulds (Curvularia lunata, C. geniculata, and C. maculans) are abundant, C. lunata being the most common; C. maculans was observed only once. Head moulds, largely responsible for poor germination of the seed harvested, include Oidium tenellum which is practically harmless; H. stenospilum (or H. sacchari), H. rostratum [R.A.M., 26, p. 337], and C. lunata, causing blackening of individual grains; and a species of Fusarium, probably F. moniliforme [Gibberella fujikuroi].