Bacterial leaf spot and dieback of Centrosema spp.
1981
Lenne, J.M. | Torres G, C. | Victoria, J.I. (Centro Internacional de Agricultura Tropical, Cali (Colombia))
A severe leaf spot and dieback of young growth of accessionss of the promising tropical forage legumes Centrosema brasilianum, C. plumieri, C. pubescens, C. virginianum and Centrosema spp. was observed at various evaluation sites in Colombia during 1980 and 1981. The causal organism was identified as Pseudomonas sp. Kock's postulates were successfully competed with 18 isolates of the bacterium. Seed of three accession of Centrosema spp. were infected with the bacterium at levels of 8 to 34%. Further studies are being made to identify the species, to determine the host range of the bacterium, and to select resistant accessions of Centrosema spp. As this has not been reported previously on Centrosema spp., care must be taken to prevent its introduction to other countries where Centrosema spp. are promising tropical forage legumes
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