Distribución espacial de las poblaciones de huevos  de Bactericera cockerelli Sulc. en el cultivo de tomate de cáscara (Physalis ixocarpa Brot.)

Rivera-Martínez, Roberto; Ramírez-Dávila, José Francisco; Acosta-Guadarrama, Agustín David

doi:10.15174/au.2018.1944

Cited by 3 publications

(9 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The experimental semivariograms, which were computed using the Variowin 2.2 software (Springer Verlag, NY) (Maldonado et al, 2017), were adjusted to spherical, Gaussian, exponential, pure nugget effect, logarithmic, monomic and hole-effect theoretical models. The plateau, range and nugget effect parameters of these models were modified manually to mathematically validate the adjusted models using validation statistics such as Mean Estimation Errors (MEE), Mean Square Error (ECM) and Dimensionless Mean Square Error (MCE) (Rivera-Martínez et al, 2017).…”

Section: Mexican Journal Of Phytopathologymentioning

confidence: 99%

Spatial and temporal distribution of ojo de gallo, (Mycena citricolor) in coffee plantations of the State of Mexico

Pino-Miranda¹,

Ramírez-Dávila²,

Serrato-Cuevas³

et al. 2022

RMF

Self Cite

View full text Add to dashboard Cite

The eye of the rooster (Mycena citriciolor) 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 M. citricolor 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 (Coffe arabica) 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 M. citricolor 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.

show abstract

Section: Mexican Journal Of Phytopathologymentioning

confidence: 99%

Spatial and temporal distribution of ojo de gallo, (Mycena citricolor) in coffee plantations of the State of Mexico

Pino-Miranda¹,

Ramírez-Dávila²,

Serrato-Cuevas³

et al. 2022

RMF

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is worth mentioning that in sampled plots, avocado is planted only for local commerce, and its agricultural management is minimum, with a traditional control of pests and diseases, as mentioned above. Samples were taken fortnightly between July and December of the year 2018, for a total of 48 samplings (modified from Rivera et al, 2018).…”

Section: Fully Bilingualmentioning

confidence: 99%

“…Así mismo, de cada árbol georreferenciado se consideraron 12 ramas, cuatro en cada uno de los estratos de los arboles (alto, medio y bajo), y, a su vez, se seleccionaron 12 frutos con síntomas de antracnosis (cuatro por cada estrato del árbol), mismos donde la incidencia se obtuvo tomando como referencia de cero hasta 12 frutos enfermos por árbol (Ávila et al, 2004)., cabe mencionar que en las parcelas muestreadas se cultiva aguacate únicamente para comercio local y cuyo manejo agronómico es mínimo, controlando las plagas y enfermedades de manera tradicional, como se mencionó anteriormente. Cada muestreo se llevó a cabo cada 14 días durante los meses de julio a diciembre del año 2018, teniendo un total de 48 muestreos (modificado de Rivera et al, 2018).…”

Section: Fully Bilingualunclassified

“…Primavara Verlag, New York; U.S.A.) (Maldonado et al, 2017). The experimental semivariograms were adjusted to theoretical models, which tend to be spherical, gaussian, exponential, with a pure nugget effect, logarithmical, monomic and with a hole effect, where the plateau, range and effect parameters and nugget effect are modified until validation statistics are obtained which are adequate and help mathematically approve the adjusted models, such as the Standard Error of the Mean (SEM), Mean Squared Error (MSE) and the Dimensionless Mean Squared Error (DMSE) (Ramírez, 2012;Acosta et al, 2018).…”

Section: Fully Bilingualmentioning

confidence: 99%

“…Revista Mexicana de FITOPATOLOGÍA Mexican Journal of Phytopathology EEUU) (Maldonado et al, 2017). Los semivariogramas experimentales fueron ajustados a modelos teóricos, los cuales suelen ser esféricos, gaussianos, exponenciales, de efecto pepita puro, logarítmicos, monómicos y de efecto agujero, donde los parámetros de meseta, rango y efecto pepita se van modificando hasta obtener estadísticos de validación que sean adecuados y permitan aprobar matemáticamente los modelos ajustados, tales como la Media de los Errores de Estimación (MEE), Error Cuadrático Medio (ECM) y Error Cuadrático Medio Adimensional (ECMA) (Ramírez, 2012;Acosta et al, 2018).…”

Section: Fully Bilingualunclassified

See 2 more Smart Citations

Spatial analysis of anthracnose in avocado cultivation in the State of Mexico

Tapia-Rodríguez

Ramírez-Dávila

Figueroa-Figueroa

et al. 2019

RMF

Self Cite

View full text Add to dashboard Cite

El presente estudio contribuye al conocimiento de la distribución espacial de la antracnosis (Colletotrichum gloeosporioides) 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.

show abstract

Methanolic extract of Crotalaria longirostrata: Identification of secondary metabolites and insecticidal effect

López¹,

Beache²,

Fuentes³

et al. 2022

Sci. agropecu.

View full text Add to dashboard Cite

The complications caused by the generation of resistance in the psyllid Bactericera cockerelli by chemical pesticides, raise the need for the alternative use of products that reduce resistance and ensure better control. The species Crotalaria longirostrata is a source of secondary metabolites, which show possible activity against insect pests. The objective of the research was to identify the compounds of the crude methanolic extract of C. longirostrata leaves, as well as to evaluate their biological activity on B. cockerelli nymphs. Twenty-five compounds were identified by Gas Chromatography coupled to Mass Spectrometry (GC-MS) analysis; the most abundant was 1β,2β-epoxy-1α-methoxymethyl-8α-pyrrolizidine; an alkaloid of the iminosugar group, reported for the first time in C. longirostrata, of which concentrations from 2 to 30 mg/mL of the methanolic extract had to be prepared to evaluate on B. cockerelli nymphs. It showed that at 48 h, there was a mortality of 73.2%-100% in the treatments of 8, 12, 16, 20, and 30 mg/mL. The mean lethal concentration (LC50) was 4.78 mg/mL and LC95 14,52 mg/mL. The results obtained with the methanolic extract of C. longirostrata leaves for controlling the insect B. cockerelli suggest that it can potentially be used as an alternative insecticide of botanical origin to manage the insect.

show abstract

Distribución espacial de las poblaciones de huevos de Bactericera cockerelli Sulc. en el cultivo de tomate de cáscara (Physalis ixocarpa Brot.)

Cited by 3 publications

References 29 publications

Spatial and temporal distribution of ojo de gallo, (Mycena citricolor) in coffee plantations of the State of Mexico

Spatial and temporal distribution of ojo de gallo, (Mycena citricolor) in coffee plantations of the State of Mexico

Spatial analysis of anthracnose in avocado cultivation in the State of Mexico

Methanolic extract of Crotalaria longirostrata: Identification of secondary metabolites and insecticidal effect

Contact Info

Product

Resources

About