Abstract

RAMIREZ ANDRES GONZALEZ, José Francisco; SANCHEZ, Jesús Ricardo  and  DE LEON, Carlos. Modeling and maps generation from the spatial behavior of Sporisorium reilianum ((Kühn) Langdon y Fullerton) in Mexico State, México. Rev. Fac. Cienc. Agrar., Univ. Nac. Cuyo [online]. 2011, vol.43, n.2, pp.157-173. ISSN 1853-8665.

This study was done with the purpose of modeling the spatial distribution of the head smut in maize, caused by the Sporisorium reilianum in 2006 in the Mexico State, and its visualization through the elaboration of density maps. The sampling was made in 100 parcels, which were georeferenced by location. The incidence of the disease was by establishing five points in each plot of maize. In each point 100 plants were counted by row. The plants with symptoms of this disease were registered. A geoestatistic analysis was done to estimate the experimental semivariograms once done; it was adjusted to a theoretical model (Spherical, exponential o Gaussian) through the VarioWin 2.2 program. Its adjustment was proved through the crossed validation. Subsequently aggregation maps of the disease were done through the geostatistic interpolation method or kriging. The results show that the disease was presented in 20 locations in 19 counties in the State of Mexico. All the locations presented a cluster spatial behavior of this disease.

Keywords : Spatial distribution; Sporisorium reilianum; Geostatistic; Zea mays.

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