Long-term spatial association of Sporisorium reilianum in maize
DOI:
https://doi.org/10.33885/sf.2014.3.1130Keywords:
corn head smut, spatial distribution, Mexico, geostatistical, SADIEAbstract
Com head smut has caused important economic and ecological damages in comproducing
regions in Mexico. The stability and the spatiotemporal distribution of the disease are
necessary for the elaboration of integrated management programs through a specific point. The
objective of the existing study was to determine com head smut spatiotemporal stability through
the I m index SADIE and through the Cramer-von Mises test; and in the same way to characterize
its spatial distribution through geosta.tistics techniques. The incidence of the disease was
determined in 100 georeferenced plots in the localities of "La Mesa"' and "'Tutuapan .. in "'lxtapan
del Oro .. municipality, Mexico State. Aggregated maps were done by Kriging. The spatiotemporal
stability was determined in long term with the association Index (1.,) and the Cramer- von Mises
test The results showed that the lm index SADIE and the Cramer- von Mises test allowed
determining the spatiotemporal stability of the disease in the years from 2006 to 2008. S.
reilianum spatial patterns were obtained in the four analyzed years, visualizing its aggregation
centers with elaborated maps; which will allow to adequate management actions on specific
points or sites.
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