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Determining airflow patterns and their effect on the distribution of microclimate variables such as temperature is one of the most important activities in naturally ventilated protected agricultural structures. In tropical countries, this information is used by farmers and decision makers when defining climate management strategies and for crop-specific cultural work. The objective of this research was to implement a validated Computational Fluid Dynamics (CFD) model in 3D to determine the aerodynamic and thermal behavior of a new protected agricultural structure established in a warm climate region in the Dominican Republic. The numerical evaluation of the structure was carried out for the hours of the daytime period (6–17 h), the results found allowed to define that the CFD model generates satisfactory predictions of the variables evaluated. Additionally, it was found that airflow patterns are strongly affected by the presence of porous insect screens, which generate moderate velocity flows (<0.73 m s−1) inside the structure. It was also identified that the value of the average temperature inside the structure is directly related to the air flows, the level of radiation and the temperature of the outside environment.
Edwin Villagrán; Andrea Rodriguez. Analysis of the Thermal Behavior of a New Structure of Protected Agriculture Established in a Region of Tropical Climate Conditions. Fluids 2021, 6, 223 .
AMA StyleEdwin Villagrán, Andrea Rodriguez. Analysis of the Thermal Behavior of a New Structure of Protected Agriculture Established in a Region of Tropical Climate Conditions. Fluids. 2021; 6 (6):223.
Chicago/Turabian StyleEdwin Villagrán; Andrea Rodriguez. 2021. "Analysis of the Thermal Behavior of a New Structure of Protected Agriculture Established in a Region of Tropical Climate Conditions." Fluids 6, no. 6: 223.
Current available soil information allows building baselines to improve research, such as sustainable resource management; however, its use requires analysis of accuracy and precision that describes specific variables on local and global scales. Therefore, this study evaluated differences in the spatial distribution of water retention capacity (WRC) of the soil at a depth of 0.3 m, calculated from local general soil surveys and the global gridded soil information system (SoilGrids), using detailed or semi-detailed soil surveys as a reference, in two regions of Colombia (A and B). The qualitative and statistical analyses evaluated differences in WRC surfaces generated by the information sources. Neither information sources described WRC accurately, achieving correlations between −0.15 and 0.49 and average absolute errors between 9.65 and 19.52 mm for zones A and B, respectively. However, studies on the local scale remain within the ranges observed in the most detailed local studies. The use of products on the global scale is subject to regional analyses; nevertheless, they can be included as a covariate in digital soil mapping studies on more detailed scales.
Gustavo Alfonso Araujo-Carrillo; Viviana Marcela Varón-Ramirez; Douglas Andrés Gómez-Latorre; Jhon Mauricio Estupiñan-Casallas; Andrea Onelia Rodríguez-Roa; Leidy Yibeth Deantonio-Florido; Fabio Ernesto Martínez-Maldonado. Mapping a hydrophysical soil property through a comparative analysis of local and global scale approximations. Scientia Agricola 2021, 78, 1 .
AMA StyleGustavo Alfonso Araujo-Carrillo, Viviana Marcela Varón-Ramirez, Douglas Andrés Gómez-Latorre, Jhon Mauricio Estupiñan-Casallas, Andrea Onelia Rodríguez-Roa, Leidy Yibeth Deantonio-Florido, Fabio Ernesto Martínez-Maldonado. Mapping a hydrophysical soil property through a comparative analysis of local and global scale approximations. Scientia Agricola. 2021; 78 (2):1.
Chicago/Turabian StyleGustavo Alfonso Araujo-Carrillo; Viviana Marcela Varón-Ramirez; Douglas Andrés Gómez-Latorre; Jhon Mauricio Estupiñan-Casallas; Andrea Onelia Rodríguez-Roa; Leidy Yibeth Deantonio-Florido; Fabio Ernesto Martínez-Maldonado. 2021. "Mapping a hydrophysical soil property through a comparative analysis of local and global scale approximations." Scientia Agricola 78, no. 2: 1.
Global food production and availability in hot climate zones are limited by biotic and abiotic factors that affect agricultural production. One of the alternatives for intensifying agriculture and improving food security in these regions is the use of naturally ventilated greenhouses, an alternative that still requires information that allows technical criteria to be established for decision-making. Therefore, the objective of this work was to study the spatial distribution of temperature and relative humidity inside a greenhouse built in the Colombian Caribbean. The methodological approach included the implementation of an experimentally validated 3D numerical simulation model. The main results obtained allowed to determine that the airflows generated inside the greenhouse had average velocities below 0.5 m/s and were mainly driven by the thermal effect of natural ventilation. It was also found that the gradients generated between the interior of the structure and the exterior environment presented values lower than 2.0°C for temperature and −6.3% for relative humidity. These values can be considered low in comparison with other structures evaluated in other regions of the world where the gradients can reach values higher than 10°C and 13% for temperature and relative humidity, respectively.
Edwin Villagran; Rommel Leon; Andrea Rodriguez; Jorge Jaramillo. 3D Numerical Analysis of the Natural Ventilation Behavior in a Colombian Greenhouse Established in Warm Climate Conditions. Sustainability 2020, 12, 8101 .
AMA StyleEdwin Villagran, Rommel Leon, Andrea Rodriguez, Jorge Jaramillo. 3D Numerical Analysis of the Natural Ventilation Behavior in a Colombian Greenhouse Established in Warm Climate Conditions. Sustainability. 2020; 12 (19):8101.
Chicago/Turabian StyleEdwin Villagran; Rommel Leon; Andrea Rodriguez; Jorge Jaramillo. 2020. "3D Numerical Analysis of the Natural Ventilation Behavior in a Colombian Greenhouse Established in Warm Climate Conditions." Sustainability 12, no. 19: 8101.
La crisis climática es evidente y los eventos climáticos extremos afectan al sector agropecuario, ocasionando incalculables pérdidas al país. En este contexto, cobra especial relevancia, para el sector, contar con plataformas de información, bases de datos e investigaciones más precisas sobre las afectaciones del clima a los cultivos, el manejo preventivo y la gestión del riesgo agroclimático. En este libro hacemos memoria y sistematizamos las lecciones aprendidas y los factores que determinaron contar hoy con el Sistema Experto MAPA, para que otros grupos de I + D que inician el desarrollo de un sistema experto o un dispositivo similar tengan este punto de referencia. A cada paso fuimos develando las múltiples dimensiones que conlleva un desarrollo de este tipo. Aprendimos sobre las posibilidades y limitaciones de una institución de investigación para el desarrollo de un sistema de estas características, las dificultades de valorar e incorporar la visión de los usuarios en el desarrollo, las restricciones que se tienen a la hora de lograr la apropiación de la herramienta por parte del sector y las complicaciones que tiene consolidar su sostenibilidad. Puesto que el conocimiento humano es un sistema, esperamos que en esta memoria le sirva a la comunidad de investigadores para que ese “cerebro colectivo receptivo e inquieto” alcance mayores cotas de éxito y contribuya a una mejor cultura agroclimática.
Andrea Onelia Rodríguez Roa; Douglas Andrés Gómez-Latorre; Juan Carlos Martínez Medrano; Blanca Aurora Arce Barboza. El Sistema Experto MAPA: una herramienta para mejorar la cultura agroclimática. El Sistema Experto MAPA: una herramienta para mejorar la cultura agroclimática 2020, 1 .
AMA StyleAndrea Onelia Rodríguez Roa, Douglas Andrés Gómez-Latorre, Juan Carlos Martínez Medrano, Blanca Aurora Arce Barboza. El Sistema Experto MAPA: una herramienta para mejorar la cultura agroclimática. El Sistema Experto MAPA: una herramienta para mejorar la cultura agroclimática. 2020; ():1.
Chicago/Turabian StyleAndrea Onelia Rodríguez Roa; Douglas Andrés Gómez-Latorre; Juan Carlos Martínez Medrano; Blanca Aurora Arce Barboza. 2020. "El Sistema Experto MAPA: una herramienta para mejorar la cultura agroclimática." El Sistema Experto MAPA: una herramienta para mejorar la cultura agroclimática , no. : 1.
El objetivo de la presente publicación es reunir y facilitar el acceso a conocimientos técnicos de la producción de lima ácida Tahití para pequeños y medianos productores del cultivo, los empresarios del sector, la comunidad académica del área frutícola de nivel profesional y técnico, y los asistentes técnicos agropecuarios del cultivo en Colombia. Por otra parte, también se pretende recopilar información para las instituciones relacionadas con el agronegocio de este cultivo en el país, con el fin de mejorar la competitividad, tanto para el mercado interno como para el de exportación. En la publicación se presentan los últimos resultados de la investigación acerca de la lima ácida Tahití en Colombia, datos detallados sobre las características ambientales de las principales regiones productoras, aspectos botánicos y de recursos genéticos, y sistemas de propagación. Así mismo, se exponen las recomendaciones más relevantes para el manejo del cultivo, incluyendo el aspecto productivo, el componente fitosanitario, las prácticas de manejo agronómico, las recomendaciones de cosecha y poscosecha, y los indicadores económicos y financieros.
Nubia Murcia Riaño; Mauricio Fernando Martínez; Javier Orlando Orduz Rodriguez; Liliana Ríos-Rojas; Yeison López Galé; Marlon José Yacomelo Hernández; Arturo Carabalí Muñoz; Takumasa Kondo; María Cristina García Muñoz; Jairo López González; Lumey Pérez Artiles; Diana Milena Rodríguez Mora; José Mauricio Montes Rodríguez; Mónica Betancourt Vásquez; Isaura Viviana Rodríguez Torres; Juliene Andrea Barreto Rojas; Rubilma Tarazona Velásquez; Diana Mayerly Mateus Cagua; Heberth Augusto Velásquez Ramírez; Hover Beltrán López; Yeinny Carolina Pisco Ortiz; Leonardo Álvarez Ríos; Clever Gustavo Becerra Romero; Blanca Lucía Botina Azaín; Liliana Carolina Castillo Villamor; Edwin Oswaldo Rojas Barbosa; Jhon Mauricio Estupiñán Casallas; Andrea Onelia Rodríguez Roa; Nora Cristina Mesa. Modelo productivo de lima ácida Tahití (Citrus × latifolia Tanaka ex Q. Jiménez) para Colombia. Modelo productivo de lima ácida Tahití (Citrus × latifolia Tanaka ex Q. Jiménez) para Colombia 2020, 1 .
AMA StyleNubia Murcia Riaño, Mauricio Fernando Martínez, Javier Orlando Orduz Rodriguez, Liliana Ríos-Rojas, Yeison López Galé, Marlon José Yacomelo Hernández, Arturo Carabalí Muñoz, Takumasa Kondo, María Cristina García Muñoz, Jairo López González, Lumey Pérez Artiles, Diana Milena Rodríguez Mora, José Mauricio Montes Rodríguez, Mónica Betancourt Vásquez, Isaura Viviana Rodríguez Torres, Juliene Andrea Barreto Rojas, Rubilma Tarazona Velásquez, Diana Mayerly Mateus Cagua, Heberth Augusto Velásquez Ramírez, Hover Beltrán López, Yeinny Carolina Pisco Ortiz, Leonardo Álvarez Ríos, Clever Gustavo Becerra Romero, Blanca Lucía Botina Azaín, Liliana Carolina Castillo Villamor, Edwin Oswaldo Rojas Barbosa, Jhon Mauricio Estupiñán Casallas, Andrea Onelia Rodríguez Roa, Nora Cristina Mesa. Modelo productivo de lima ácida Tahití (Citrus × latifolia Tanaka ex Q. Jiménez) para Colombia. Modelo productivo de lima ácida Tahití (Citrus × latifolia Tanaka ex Q. Jiménez) para Colombia. 2020; ():1.
Chicago/Turabian StyleNubia Murcia Riaño; Mauricio Fernando Martínez; Javier Orlando Orduz Rodriguez; Liliana Ríos-Rojas; Yeison López Galé; Marlon José Yacomelo Hernández; Arturo Carabalí Muñoz; Takumasa Kondo; María Cristina García Muñoz; Jairo López González; Lumey Pérez Artiles; Diana Milena Rodríguez Mora; José Mauricio Montes Rodríguez; Mónica Betancourt Vásquez; Isaura Viviana Rodríguez Torres; Juliene Andrea Barreto Rojas; Rubilma Tarazona Velásquez; Diana Mayerly Mateus Cagua; Heberth Augusto Velásquez Ramírez; Hover Beltrán López; Yeinny Carolina Pisco Ortiz; Leonardo Álvarez Ríos; Clever Gustavo Becerra Romero; Blanca Lucía Botina Azaín; Liliana Carolina Castillo Villamor; Edwin Oswaldo Rojas Barbosa; Jhon Mauricio Estupiñán Casallas; Andrea Onelia Rodríguez Roa; Nora Cristina Mesa. 2020. "Modelo productivo de lima ácida Tahití (Citrus × latifolia Tanaka ex Q. Jiménez) para Colombia." Modelo productivo de lima ácida Tahití (Citrus × latifolia Tanaka ex Q. Jiménez) para Colombia , no. : 1.
The aim of this research was to study the effect of climatic conditions on the population of the grass bug Collaria scenica (Stal, 1859) using agroclimatic models and analyzing its behavior under interannual variability scenarios related to El Niño-Southern Oscillation (ENSO) events. The population fluctuations of this grass bug were modeled, estimating significant climatic variables in the presence of nymphs and adults with a multiple linear regression analysis. The population distribution of this insect in relation to the occurrence of the El Niño and La Niña phenomena on the Bogota plateau was analyzed based on variations of the sea surface temperature (SST) in the tropical Pacific and their impact on climate variables. The maximum and minimum temperatures, precipitation and evapotranspiration showed higher significance for this pest than the other variables. The optimal growth and development conditions for this grass bug occurred during periods with a higher daily thermal amplitude and high precipitation values, which highlights the positive effect of abundant, but not excessive, rain. This study helped to determine the population growth during the two seasons of the year with higher rainfall in the area, which correspond to March-May (MAM) and September-November (SON), mainly in the following season after the dry quarter of December-February (DJF). Important increases occur in the El Niño event because of the greater accumulation of heat units during this phenomenon based on increases in air temperature that favor insect growth.
Andrea Rodríguez-Roa; Blanca Arce-Barboza; Francisco Boshell-Villamarin; Nancy Barreto-Triana. Effect of climate variability on Collaria scenica (Hemiptera: Miridae) on the Bogotá plateau. Agronomía Colombiana 2019, 37, 47 -61.
AMA StyleAndrea Rodríguez-Roa, Blanca Arce-Barboza, Francisco Boshell-Villamarin, Nancy Barreto-Triana. Effect of climate variability on Collaria scenica (Hemiptera: Miridae) on the Bogotá plateau. Agronomía Colombiana. 2019; 37 (1):47-61.
Chicago/Turabian StyleAndrea Rodríguez-Roa; Blanca Arce-Barboza; Francisco Boshell-Villamarin; Nancy Barreto-Triana. 2019. "Effect of climate variability on Collaria scenica (Hemiptera: Miridae) on the Bogotá plateau." Agronomía Colombiana 37, no. 1: 47-61.