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<p>The eye of the rooster (<em>Mycena citriciolor</em>) is a disease in the coffee crop that can be more severe during the rainy season due to the favorable conditions that occur during this period. The objective of the study was to determine the spatial distribution and population density of <em>M. citricolor</em> in coffee cultivation in the State of Mexico and thus understand the epidemiological process of the disease. The research was carried out in the municipality of Amatepec, State of Mexico. The samplings were carried out fortnightly from September 2020 to February 2021; selecting six plots and 200 coffee trees (<em>Coffe arabica</em>) Typica and Caturra varieties, randomly per plot, these were marked and georeferenced. Methods were used to obtain the spatial distribution of the rooster’s eye, showing different adjustments of geostatistical models such as Gaussian, spherical and exponential, these were validated with the cross-validation method, showing an aggregate distribution. The estimation of the area infected by <em>M. citricolor</em> was obtained using ordinary kriging, revealing the presence of foci of infection within the plots, finding a relationship between density and climatic conditions (temperature, humidity and dew point). A high degree of spatial dependence was also obtained in all samples, indicating a strong correlation between the data. It is concluded that geostatistics is an effective tool to study and forecast this type of disease and give a clearer idea of the epidemiological process of the disease.</p>

Introduction: Copturus aguacatae is one of the most important pests of avocado plantations in Estado de México. The presence of this insect represents a risk for avocado production.Objectives: To study the spatial behavior of adult population of C. aguacatae using geostatistical techniques in avocado plantations in Estado de México. Methodology: A total of 400 7-year-old cv. Hass trees were selected and georeferenced in the municipalities of Temascaltepec and Tenancingo, Estado de México. Adult insects of C. aguacataewere collected using sticky traps baited with a commercial adhesive. For geostatistical analysis, experimental semivariograms were performed and fitted with theoretical models using the Variowin program. Infected surface maps were generated with the ordinary kriging technique, and graphical representation was provided with the Surfer 16 software.Results: The spatial behavior of the insect is observed in clusters within the plots. In some months, infestations were distributed over 100 % of the surface, but with variable population densities. These results can improve pest detection and sampling programs, as well as control measures on specific areas of infestation.Study limitations: No insects during some sampling periods.Originality: Use of geostatistical methods as a tool to know the spatial distribution of pests in the avocado plantations in Mexico.Conclusions: Including geostatistical methods in the management of C. aguacatae can help avocado growers, because it it provides a more precise knowledge of their spatial behavior.

<p>El presente estudio contribuye al conocimiento de la distribución espacial de la antracnosis (<em>Colletotrichum gloeosporioides</em>) en huertos de aguacate en el Estado de México. El estudio se llevó a cabo en los municipios de Coatepec Harinas, Tenancingo, Donato Guerra y Temascaltepec. Se usaron métodos geoestadísticos para determinar la distribución espacial de la antracnosis. Los muestreos se realizaron quincenalmente durante los meses de julio a diciembre del 2018. Seleccionando aleatoriamente 200 árboles por municipio, éstos se georreferenciaron geográficamente utilizando un navegador Trimble modelo eTrex. La distribución espacial de la antracnosis en el cultivo de aguacate mostró diferencias en cada uno de los municipios evaluados, ajustándose a diferentes modelos geoestadísticos (gaussiano, esférico y exponencial), mismos que fueron validados mediante el método de validación cruzada. La distribución espacial de la antracnosis se obtuvo con mapas elaborados a través del krigeado ordinario. Estos mapas revelaron que el municipio de Tenancingo presentó la mayor densidad de antracnosis, respecto a los municipios de Coatepec Harinas, Temascaltepec y Donato Guerra. La distribución espacial de la antracnosis en los cuatro municipios presento agregación y focos de infección localizados. En este estudio se concluye que los métodos geoestadísticos son una alternativa para mejorar los programas de manejo de enfermedades como la antracnosis y ayudan conducir de manera adecuada el control.</p>