Abstract
IN December 1955 a powdery mildew hitherto unrecorded in Africa on cotton appeared on several Egyptian (Gossypium barbadense L.) as well as American (G. hirsutum L.) varieties at Shambat, Khartoum Province. The pathogen, Leveillula taurica (Lev.) Arn., is a common parasite upon numerous other cultivated and wild plants in the Sudan1, becoming more extensive during the winter months. Although the disease was confined mainly to young cotton plants grown in the out-of-season period—for genetical work—and although it was severe only on the cotyledon and first leaves, but scarcely affecting the upper fourth or fifth leaves, the quick spread of this parasite upon the cotton varieties which are most cultivated and highly valued has caused much concern. So far the disease on cotton has not been recorded in the Gezira, where the bulk of the Sudan Egyptian cotton is grown.
Similar content being viewed by others
Article PDF
References
Tarr, S. A. J., “The Fungi and Plant Diseases of the Sudan”, (C.M.I. Publication, 1955).
Zwirn, H. E., Palest. J. Bot., Jerusalem, 3, 52 (1943).
Kamat, M. N., and Patel, M. K., Ind. Phytopath., 1, 153 (1948).
Newton, M., and Cherewick, W. J., Canad. J. Res., C, 25, 73 (1947).
Hammarlund, C., Bot. Notiser, 1, 101 (1945). Hardison, J. R., Phytopath., 34, 1 (1944).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
NOUR, M. A Powdery Mildew (Leveillula taurica (Lev.) Arn.) on Cotton in the Sudan. Nature 179, 218 (1957). https://doi.org/10.1038/179218a0
Issue Date:
DOI: https://doi.org/10.1038/179218a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.