Sugarcane Mosaic Virus in Kenya

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Date
1980
Authors
Louie, R.
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Abstract
Surveys for sugarcane mosaic virus (SCMV) in maize (Zea mays L. subsp. mays) were made in 34 of 41 districts in Kenya. SCMV was found in 20 districts and only in the western plateaus, Central Highlands, and Rift Valley. Provinces with high incidence of SCMV inc1uded Nyanza (15.2%), Rift Valley (15.8%), and Western (19.6%). SCM V was not found in Coast or Nairobi provinces. The incidence of SCMV was higher in late-planted maize planted for the April-May rains or the October-November rains than in early plantings. This is the first report of natural infection with SCMV in Cynodon dacty/on, C. n/emfuensis, Digitaria nuda, D. abyssinica, Eragrostisexasperata, Paspa/um notatum, P. scrobicu/atum, Rhynche/ytrym repens, and an unknown Tripsacumjascicu/atum cross. The distribution of SCMV in maize appeared to be related to the distribution of sources of inoculum, but the periodicity of disease development appeared to be related to vector populations. Maize streak and maize mosaic viruses were most often found in Central (4.5%) and Coast (13.8%) provinces.
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East African Agricultural And Forestry Journal, 64, pp. 944-947
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