CEDROS WILT DISEASE AND ITS OBSERVED EPIDEMIOLOGICAL LIMITATIONS

R. Griffith

No 259374, 26th Annual Meeting, July 29 to August 4, 1990, Mayaguez, Puerto Rico from Caribbean Food Crops Society

Abstract: The hypothesis cited is that given a certain increase in the Pentatomid vector population in the presence of the pathogen for Cedros wilt, which has become endemic in coconut palms in a country, the disease will increase to a certain level until the vector species reverts back in phase with the controlling factors of the ecosystem and cause the disease to level off at an asymptote, keeping it endemic without destroying the farm. However, complete destruction of the remaining palms can result from an abundance of the weed host (Asclejoias curassavica), supplying incidental vector Oncopeltus. which feeds randomly on individual palms causing random multiple infections and so final destruction of the farm. Thus the agroecosystem, by removal of palms and reduction in numbers of the secondary Pentatomid vector, controls the disease only in the secondary and epidemic phase, but can also maintain infection at a threshold level associated with the latent population of the vector Pentatomid.

Keywords: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies (search for similar items in EconPapers)
Pages: 21
Date: 1990-07-29
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Persistent link: https://EconPapers.repec.org/RePEc:ags:cfcs90:259374

DOI: 10.22004/ag.econ.259374

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