Spatial distribution of head smut (Sporisorium reilianum) of corn in Mexico

Knowledge about the spatial distribution of agricultural diseases is important for the elaboration of integrated pest management programs. Such knowledge allows the exact and adept development of sampling methods, control methods and risk valuation. Despite its importance, there have been few studie...

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Autores principales:	Sánchez-Pale,Jesús Ricardo, Ramírez-Dávila,José Francisco, González-Huerta,Andrés, de León,Carlos
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2011
Materias:	Geostatistic Sphacelatheca reiliana Sporisorium reilianum Zea mays
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200011
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spelling	oai:scielo:S0718-162020110002000112011-09-01Spatial distribution of head smut (Sporisorium reilianum) of corn in MexicoSánchez-Pale,Jesús RicardoRamírez-Dávila,José FranciscoGonzález-Huerta,Andrésde León,Carlos Geostatistic Sphacelatheca reiliana Sporisorium reilianum Zea mays Knowledge about the spatial distribution of agricultural diseases is important for the elaboration of integrated pest management programs. Such knowledge allows the exact and adept development of sampling methods, control methods and risk valuation. Despite its importance, there have been few studies of the spatial distribution of head smut of corn in Mexico. This study aimed to determine the spatial distribution of this disease during the year 2007 in the State of México and to establish its spatial behavior with geostatistical techniques. Five points per plot were chosen for sampling. For each sampling point, 100 plants in a single row were counted, and the plants that presented symptoms of the disease were recorded. The geostatistical analysis used this data to estimate the experimental semivariogram, which was adjusted using theoretical models (spherical, exponential, Gaussian and logarithmic), in the Variowin 2.2 program. The semivariogram was verified by the geostatistical interpolation method or kriging through the cross validation, and cluster maps were subsequently made. The disease was present in 32 locations of 31 counties in Mexico State. All the locations presented a spatial behavior aggregated to the disease. Twenty-four locations were adjusted to the spherical model, seven locations were adjusted to the exponential model, and one location was fit to the Gaussian model. Lastly, it was possible to set aggregation maps in all models.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.38 n.2 20112011-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200011en10.4067/S0718-16202011000200011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Geostatistic Sphacelatheca reiliana Sporisorium reilianum Zea mays
spellingShingle	Geostatistic Sphacelatheca reiliana Sporisorium reilianum Zea mays Sánchez-Pale,Jesús Ricardo Ramírez-Dávila,José Francisco González-Huerta,Andrés de León,Carlos Spatial distribution of head smut (Sporisorium reilianum) of corn in Mexico
description	Knowledge about the spatial distribution of agricultural diseases is important for the elaboration of integrated pest management programs. Such knowledge allows the exact and adept development of sampling methods, control methods and risk valuation. Despite its importance, there have been few studies of the spatial distribution of head smut of corn in Mexico. This study aimed to determine the spatial distribution of this disease during the year 2007 in the State of México and to establish its spatial behavior with geostatistical techniques. Five points per plot were chosen for sampling. For each sampling point, 100 plants in a single row were counted, and the plants that presented symptoms of the disease were recorded. The geostatistical analysis used this data to estimate the experimental semivariogram, which was adjusted using theoretical models (spherical, exponential, Gaussian and logarithmic), in the Variowin 2.2 program. The semivariogram was verified by the geostatistical interpolation method or kriging through the cross validation, and cluster maps were subsequently made. The disease was present in 32 locations of 31 counties in Mexico State. All the locations presented a spatial behavior aggregated to the disease. Twenty-four locations were adjusted to the spherical model, seven locations were adjusted to the exponential model, and one location was fit to the Gaussian model. Lastly, it was possible to set aggregation maps in all models.
author	Sánchez-Pale,Jesús Ricardo Ramírez-Dávila,José Francisco González-Huerta,Andrés de León,Carlos
author_facet	Sánchez-Pale,Jesús Ricardo Ramírez-Dávila,José Francisco González-Huerta,Andrés de León,Carlos
author_sort	Sánchez-Pale,Jesús Ricardo
title	Spatial distribution of head smut (Sporisorium reilianum) of corn in Mexico
title_short	Spatial distribution of head smut (Sporisorium reilianum) of corn in Mexico
title_full	Spatial distribution of head smut (Sporisorium reilianum) of corn in Mexico
title_fullStr	Spatial distribution of head smut (Sporisorium reilianum) of corn in Mexico
title_full_unstemmed	Spatial distribution of head smut (Sporisorium reilianum) of corn in Mexico
title_sort	spatial distribution of head smut (sporisorium reilianum) of corn in mexico
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200011
work_keys_str_mv	AT sanchezpalejesusricardo spatialdistributionofheadsmutsporisoriumreilianumofcorninmexico AT ramirezdavilajosefrancisco spatialdistributionofheadsmutsporisoriumreilianumofcorninmexico AT gonzalezhuertaandres spatialdistributionofheadsmutsporisoriumreilianumofcorninmexico AT deleoncarlos spatialdistributionofheadsmutsporisoriumreilianumofcorninmexico
_version_	1714202132396113920

Spatial distribution of head smut (Sporisorium reilianum) of corn in Mexico

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