Segmentation applied to weather-disease relationships in South American leaf blight of the rubber tree |
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Authors: | Jean Guyot Virgile Condina Fabien Doaré Christian Cilas Ivan Sache |
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Institution: | 1.CIRAD, UPR Bioagresseurs de Pérennes,Kourou,France;2.CIRAD, UPR Bioagresseurs de Pérennes,Montpellier,France;3.INRA—AgroParisTech,Thiverval-Grignon,France;4.CIRAD,Kourou Cédex,France |
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Abstract: | South American leaf blight (SALB) is a severe threat to world rubber production. One way of controlling it is to set up plantations
in zones not conducive to the disease. Such zones are known once a plantation has been set up, but few data are available
on how climate affects the disease, especially in the Amazon region. With better knowledge of conditions that are favourable
to SALB epidemics it would be possible to more accurately identify risk zones in Asia and Africa, continents that are still
SALB-free. Based on a trial design involving detailed and frequent observations, and with a method rarely used in plant epidemiology,
the segmentation method, the results presented in this article make it possible to list, in order of importance, climatic
factors that influence disease severity under conditions where the climate varies little over the year. |
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