Abstract

MOLINA-SERRANO, José Antonio; FAJARDO-FRANCO, Marja Liza; AGUILAR-TLATELPA, Martin  and  CASTANEDA-MENDOZA, Arturo. Monitoring severity of Lophodermium sp. in pine forest with satellite images Sentinel 2. Rev. mex. fitopatol [online]. 2020, vol.38, n.1, pp.107-118.  Epub Nov 27, 2020. ISSN 2007-8080.  https://doi.org/10.18781/r.mex.fit.1907-3.

In this paper, we evaluated satellite images from Sentinel 2 to estimate the severity of needle cast in pine and field evaluations. Three indexes were used: a) Normalized Difference Vegetation Index (NDVI), b) Moisture Stress Index (MSI), and c) Soil-adjusted Vegetation Index (SAVI). These indexes were obtained from the combination of satellite bands acquired monthly during February to July 2017. The values obtained by the indexes were correlated with the severity of needle cast of pine, estimated in 24 sampling sites. The values obtained from MSI correlated positively with the observed values of severity (0.70783, p<0.0001), the values obtained from NDVI had a moderate positive correlation with severity (0.53316, p<0.0001). Nevertheless, the data obtained from SAVI had a low positive correlation with severity (0.24844, p=0.0062). The results showed that the use of satellite images from Sentinel 2 and MSI can be used like a tool for monitoring the severity of Lophodermium sp. in pine forest.

Keywords : Needle; NDVI; MSI; SAVI; Pinus sp.

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