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A comparison of maize diseases in temperate and in tropical environments

Author: Renfro, B.L.
Author: Ullstrup, A.J.
Year: 1975
Abstract: Maize is produced primarily in temperate and warm-temperate zones of the world, but its production is increasing in many tropical regions. Some diseases are common to both of these environmental zones, even though their importance may vary greatly. Other diseases are confined to a single zone. The important factors influencing the geographical distribution of maize diseases and some of their vectors are temperature, moisture, cultural practices, and the type and diversity of maize germplasm used. The Sclerospora-incited downy mildew diseases, late wilt, banded leaf and sheath blight, and Rhizoctonia, Botryodiplodia, and gray ear rots occur only in the tropical zone and the warm, temperate areas, while southern rust, Pythium and bacterial stalk rots, Curvularia leaf spot, and ear rot caused by Dilplodia macrospora are much more prevalent there, occurring only occassionally beyond 34°north or south latitude. Conversely, bacterial wilt, eye spot, and yellow leaf blight have been found to occur only in the temperate zones. Ergot has been found only in a few locations at high elevation (2500-2700 meters) in Central Mexico. Northern leaf blight, cemmon rust, and stalk and ear rots caused by Diplodia maydis and Gibberella zeae prevail in the temperate zones and at high elevations and in winter seasons within tropical latitudes.
Format: PDF
Language: English
Publisher: CIMMYT
Serie: CIMMYT Translations and Reprints;
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Book
Place of Publication: Mexico
Pages: 10 pages
Keywords: Heat Resistance
Serie Number: No. 14
Agrovoc: MAIZE

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