Rafael Mata

Rafael Mata
University of Costa Rica | UCR · Centro de Investigaciones Agronómicas (CIA)

Master of Science

About

51
Publications
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312
Citations
Citations since 2017
9 Research Items
199 Citations
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2017201820192020202120222023010203040
2017201820192020202120222023010203040

Publications

Publications (51)
Article
Oxisols have been previously reported in Costa Rica. However, few studies provided specific data to corroborate their presence and explain their genesis under different soil-forming factors. This study was performed with the aim to confirm Oxisols occurrence in different landscapes and parent materials in Costa Rica. Eight pedons were sampled, desc...
Data
La teca (Tectona grandis L.f.), es una de las especies preferidas en la reforestación de las zonas tropicales, debido a sus excelentes rendimiento y el alto valor de su madera. En Centroamérica se informa de aproximadamente 76000 ha plantadas con dicha especie. Se denomina como el "Síndrome del decaimiento lento de la teca (SDLT)", a la mortalidad...
Article
Full-text available
The precise determination of landforms and their formation processes are key to accomplish detailed soil mapping and better understand of soil genesis. The Upper General River Basin is located at the southeast of Costa Rica on the transition between Cordillera de Talamanca and General River Valley, forming an extensive alluvial fan sequence . Our w...
Article
Poco más de 364.000 datos sobre características físicas, químicas y taxonómicas de suelos, de 1565 puntos de muestreos georreferenciados se encuentran ahora accesibles mediante la plataforma virtual “Geoportal de Suelos de Costa Rica”, en la dirección web www.suelos.cr. Este es un esfuerzo liderado por el Centro de Investigaciones Agronómicas de l...
Article
En este trabajo después de incubar durante 90 días, suelo tomado del horizonte A, de un Andisol y un Ultisol con los abonos orgánicos (compost y vermicompost), se determinó el efecto residual sobre el peso seco y la concentración de macro nutrientes en (Sorghum bicolor). Los datos fueron sometidos a un diseño completamente al azar y las medias se a...
Conference Paper
Full-text available
RESUMO: Se estudió la Conductividad Eléctrica Aparente (CEa) como indicador de la variabilidad de un suelo cultivado con arroz (Oryza sativa), en condiciones tropicales. Antes de medir la CEa en todo el terreno, se realizó un análisis de semivarianza en una parcela de 2500 m 2 para determinar la mínima densidad que se debería colectar en el muestre...
Article
Full-text available
Salinity studies in the Guanacaste province (Costa Rica) an characterization of some soils under saline influ- ence. The soils wich are affected by salts are developing preferently in regions where the precipitation is limited, the temperature is high and the conditions of drainage are restricted like in some soils of Guanacaste's area. A bibliogra...
Article
Full-text available
The effect, on growth of plants and soil properties, of incorporating green biomass and applying individual and compound microbial inocula was evaluated in a soybeantomato crop rotation system during 24 months in the greenhouse. Nine different conditions were evaluated: tomato alone (T); tomato-soybean rotation (TS); tomato-soybean rotation with in...
Article
Mediante un estudio en el campo, se determinó el efecto de la labranza mecanizada con 3 implementos sobre la compactación, las variables físicas e hidropedológicas de un Ultisol dedicado a la ganadería, ubicado en San Mateo, Alajuela. Se seleccionó un lote de aproximadamente 10 000 m2, se dividió en 16 parcelas iguales (650 m2 cada una), y se aleat...
Article
Se evaluó un sistema de rotación soyatomate, con incorporación de biomasa verde y aplicación de inóculos microbianos individuales y en mezcla sobre el crecimiento de las plantas y propiedades edáficas; para ello se evaluaron en invernadero por 24 meses los siguientes 9 tratamientos: solo tomate (T); rotación tomate-soya (TS); rotación tomate-soya c...
Article
Full-text available
A field study was conducted to test the effects of soil tillage with 3 different implements on compaction, physical and hydropedological properties of an Ultisol under cattle production, located in San Mateo, Alajuela. An area of approximately 10 000 m2 was selected and divided into 16 plots (650 m2 each) and was tilled with 3 different implements...
Article
Full-text available
Teak (Tectona grandis L.f.) is an important species in the worldwide quality tropical hardwood sector, which has gained significance in Central America since the first large plantations were established in the 1980s. The present work is a descriptive study that aims to: (1) analyse and characterise the general soil patterns which may be influencing...
Article
Full-text available
Respiration, microbial biomass and soil phosphatase activity in two agroecosystems and one forest in Turrialba, Costa Rica. In order to evaluate some microbiological and biochemical characteristics, a comparative study was carried out, as related to 3 different land uses in Ultisols located in Grano de Oro, Turrialba, Costa Rica. Three soil managem...
Article
Full-text available
In order to evaluate some microbiological and biochemical characteristics, a comparative study was carried out, as related to 3 different land uses in Ultisols located in Grano de Oro, Turrialba, Costa Rica. Three soil management systems were selected (two agroecosystems, coffee and coffee-banana) and forest. In each farm, 4 composite soil samples...
Article
Full-text available
Se evaluó el efecto de la aplicación de 6 dosis de compost más un testigo, en interacción con la aplicación ó no aplicación de nematicida, sobre la dinámica de las poblaciones de microorganismos del suelo (bacterias, hongos y actinomicetes), las poblaciones de nematodos fitoparásitos y la salud del sistema radical en el cultivo del banano. Los resu...
Article
The effect of implementing 6 doses of compost plus a control, interacting with the nematicide application or non-application, on the dynamics of the soil microorganisms population (bacteria, fungi and actinomycetes), the phytoparasite nematode populations and the root system health of the banana crop, were evaluated. The results did not show any di...
Article
Full-text available
The determination of thesoilmoisture regimehas been limitedin many casestocount the number ofclimatologicallydry months, regardless ofthe capacity of soilto hold water.For this work, it was proposed to analyze the hydric balance of the profiles studied taking into account not only climatic variables (three weather stations)but also edaphics, for wh...
Article
Full-text available
This study aims at assessing the nutrient sustainability of highly productive teak plantations in Central America by analyzing the nutrient accumulation dynamics at different ages and the allocation patterns throughout a rotation period. Three teak plantations (28 stands of different ages) were selected in Costa Rica and Panama, and nutrient and bi...
Article
Full-text available
Se resume la información disponible sobre la mineralogía de arcilla de los horizontes superficiales del suelo, aunque se menciona la mineralogía de los horizontes B cuando esta es diferente a la de los horizontes A, de manera relevante, en suelos de Costa Rica desde 1931 hasta el presente. Se enfatiza en la información disponible para (1) esmectíti...
Article
Full-text available
Se resume la información disponible sobre caracterización de arcillas en suelos de Costa Rica desde 1931 hasta el presente, descrita en 84 trabajos con 520 observaciones hasta el 2014. La discusión se basa principalmente en la mineralo - gía de arcilla de los horizontes superficiales del suelo, aunque se menciona la mineralogía de los horizontes B...
Article
This paper summarizes available information on soil clay mineralogy in topsoils of Costa Rica, including clay minerals described in B horizons when significantly different from predominant mineralogy in the topsoil. The soil clay suites (“predominant clay groups”) emphasized are grouped as: (1) smectites and interstratified clays (Vertisols and oth...
Article
Full-text available
Findings in a total of 84 research papers identifying clay minerals on 520 soil samples of Costa Rica are summarized. This review emphasizes on the clay minerals described in the topsoil samples, although clay minerals in the B horizons are also discussed when they are different to predominant mineralogy in the topsoil. Sites where soil clays infor...
Book
Full-text available
El objetivo del Atlas es apoyar el uso sostenible del suelo, proporcionando una herramienta útil para conocer su estado y llamar la atención sobre su importancia. Estos aspectos constituyen el punto de partida para fomentar la conservación de este valioso recurso natural. Es por ello que, con el fin de mejorar la comunicación y concienciar a la soc...
Article
Full-text available
Aim of study: Appropriate knowledge regarding teak (Tectona grandis L.f.) nutrition is required for a better management of the plantations to attain high productivity and sustainability. This study aims to answer the following questions: How can it be determined if a teak tree suffers a nutrient deficiency before it shows symptoms? Are nutrient con...
Article
Full-text available
En la subcuenca alta del río Pirrís, se describieron y clasificaron 8 perfiles de suelos derivados de cenizas volcánicas en 2 órdenes de suelos: Andisoles e Inceptisoles, subórdenes Ustands, Udands y Ustepts; grandes grupos Haplustands, Placudands, Dystrustepts y subgrupos Dystric Haplustands, Humic Haplustands, Aquic Haplustands, Typic Placudands...
Article
Full-text available
Se estudió la génesis de los suelos en el nivel medio alto de la subcuenca del río Pirrís, en la región conocida como Los Santos. El área estudiada fue cercana a 25000 ha, con elevaciones de 1078 a 3140 m, un rango de precipitación promedio anual de 1954 a 2233 mm y un tiempo geológico que varía desde el Holoceno hasta el Oligoceno. Se identificaro...
Article
Full-text available
Se caracterizaron y clasificaron 26 suelos del orden de los Ultisoles en la parte media de la subcuenca del río Pirrís. Los suelos se desarrollan en relieves ondulados a fuertemente ondulados, a partir de materiales del Pleistoceno al Oligoceno y de origen: 1) sedimentario marino, 2) volcánico andesítico-basáltico y 3) coluvial, bajo una vegetación...
Article
Full-text available
El uso de la tierra en la subcuenca mediaalta del río Pirrís, está diferenciado por la altitud sobre el nivel del mar. Entre los 1075 y 1700 m de elevación, la principal actividad agrícola es el cultivo del café, desarrollado sobre suelos arcillosos del orden de los Ultisoles con importantes manifestaciones de erosión. Por encima de los 1700 m y ha...
Article
Land capability for agricultural use in the middle-upper Pirrís River watershed is mainly determined by altitude belts. Between 1075 and 1700 m asl, coffee production is the main agricultural activity on clayey Ultisols with important erosion manifestations. From 1700 to 3100 m natural forest, highland fruit trees, flowers, fish ponds, pastures, so...
Article
This study emphasizes on the soil-forming factors and soils distribution of the middle-upper Pirrís River watershed, Talamanca, Costa Rica, a region locally known as Los Santos. This area covers around 25 000 ha, at elevations from 1078 to 3140 m, and a range of yearly average rainfall from 1954 to 2233 mm. Geologically, rocks of the area represent...
Article
Eight soil profiles were described and classified on volcanic ash deposits at the upper Pirrís River watershed. The soils were classified as Andisols and Inceptisols of the suborders Ustands, Udands and Ustepts; at the great group level the soils were classified as Haplustands, Placudands and Dystrustepts, belonging to the subgroups Dystric Haplust...
Article
Full-text available
Twenty-six soil profiles were characterized and classified as Ultisols in the middle-upper watershed of Pirrís River. These soils developed on Pleistocene to Oligocene undulated to strongly undulated mountainous landscapes, on: 1) marine sediments, 2) volcanic andesitic-basaltic materials and 3) colluvial materials, all of them covered by natural v...
Article
Full-text available
Palabras clave: Mineralogía arcillas, fertilidad de suelo, Caribe, Costa Rica. RESUMEN Se analizó la relación entre las familias mineralógicas y las características de fertilidad de suelos cultivados con banano en las llanu-ras del Caribe de Costa Rica. Los resultados corroboran que existen diferencias en fertilidad atribuibles al tipo y cantidad d...
Article
Full-text available
Chemical properties and classification of soils cultivated with banana in the Caribbean lowlands of Costa Rica. Soils from 11 watersheds planted with banana in the alluvial valleys of the Caribbean zone of Costa Rica were chemically characterized and classified. Two major soil areas were identified based on their morphological and chemical properti...
Article
Soil clay mineralogy of banana-cultivated soils in the Caribbean lowlands of Costa Rica. This study includes the characterization of the clay mineralogy of banana soils from 11 watersheds of the Caribbean alluvial lowlands, using RX diffraction and dissolution methods. These results confirm the abundance of montmorrillonite, metahalloisite, vermicu...
Article
Full-text available
Se caracterizaron las propiedades químicas y físicas de los suelos a lo largo de una cronosecuencia de ocho fragmentos de bosque tropical estacionalmente seco (BTS) en Santa Rosa, Costa Rica, y se relacionaron con el estado sucesional de los sitios (10, 15, 20, 40, 60 y >100 años de regeneración). Se encontró una alta diversidad edáfica a escalas p...
Article
Full-text available
Chronology of tropical dry forest regeneration in Santa Rosa, Guanacaste, Costa Rica. II. Vegetation in relation to the soil. Tropical dry forest (TDF) succession was monitored in Santa Rosa, Costa Rica. We analyzed the effect of soil type on forest structure and diversity. Eight seasonally-dry TDF sites located along a successional chrono-sequence...
Article
Full-text available
We characterized soil chemical and physical properties in eight tropical dry forest (TDF) successional sites along a time sequence (10, 15, 20, 40, 60 and >100 years) in Santa Rosa, Costa Rica. Seventeen soils were identified, described, and classified in six orders. Most soils were classified as Entisols and Vertisols, but Mollisols, Alfisols, Inc...
Article
Full-text available
Tropical dry forest (TDF) succession was monitored in Santa Rosa, Costa Rica. We analyzed the effect of soil type on forest structure and diversity. Eight seasonally-dry TDF sites located along a successional chrono-sequence (10, 15, 20, 40, 60 and >100 years) were examined in relation to 17 soil pedons and six soil orders. Soils had moderate to hi...
Chapter
Soils are the most important of the earth's resources for humans. The soils of an entire nation are proportionately more complex, and need to be understood in their complexity in order to understand their sustainability. The chapter provides an overview of soils at the national level, including their types, patterns of use, and conservation status....
Article
Full-text available
Control alternatives of the grub complex (Phy/lophaga spp., Anomala spp.\and Cyclocephala spp.) (Col.: Scarabaeidae) on strawberry (Fragaria ananassa). The effect of soil solarization, as well as its combination with insec- ticides and diatomaceous earth, on the damage caused by the white grub com- plex on strawberry, was evaluated on an Andisol so...
Article
Full-text available
Manganese fonDS in volcanic ash soils on the Eastern Central Plateau grasslands. Extractable Mn fonDS were studied in 8 soils and subsoils from the grasslands in the Oriental Central Plateau of Costa Rica, at sites where foliar samples indicated Mn excesses. The extracting solutions were pH 4.8 NH4AcO, pH 7.0 NH4AcO, modified Olsen solutions, and N...
Article
Full-text available
Response of three sugar cane varieties (Saccharum spp) to three salt contents in a Vertisol of Guanacaste. To study, under greenhouse conditions, the response to salinity of three commercial varieties of sugar cane (NCo 310, PR61632 and SP 716180) in a Vertisol from Hacienda Taboga, Canas, Guanacaste, the effect of salt contents from saturated soil...

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Projects

Projects (3)
Project
On present research project we apply geomorphological and pedological approaches to investigate (i) land forms and soil interactions in order to map soil units, (ii) regional landscape dynamics that favor the specific soil orders formation, and (iii) tropical implications of soils classification for territorial and agricultural management.
Project
The project aims to create an hydrological model of the Zaratí River, an important tributary of the Coclé River catchment and the main source of drinking water for Penonomé City. The project also characterize and map the dominant soils in the catchment to identify erosion and degradation hotspots and recommend agricultural best management practices to promote water infiltration, soil conservation and soil quality.
Project
Through the analysis of physical parameters from 688 soil profiles distributed along the territory of Costa Rica, performance of Peele and Briggs formulas were evaluated, both equations widely used in hydrology and irrigation for field capacity (CC) and permanent wilting point (PMP) moisture estimation. Genetic horizons were classified by their deep into the soil profile: superficial (0-35 cm) and sub superficial (35-100 cm). ). From values of sand (a), silt (L) and clay (A) and the formulas mentioned above, soil moisture at CC and PMP were calculated for every horizon of soils evaluated. From results obtained in present study It’s recommended: 1) to determine the soil water retention values through established laboratory methodologies, and 2) to continue with research on more accurate soil prediction models that involve other soil factors like porosity, OC content, structure, soil densities and clay mineralogy.