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Abonadora centrífuga DP44-4000 Aguirre, entre tradición y modernidad

  • Barreiro Elorza, Pilar
  • Garrido Izard, Miguel
  • Da Costa Neto, Wilson
  • García Fernández, Canela
En esta prueba de campo realizada el 22 de octubre en Tafalla, pusimos a prueba las capacidades de regulación y control automático de la abonadora centrífuga de doble disco DP44-4000, suspendida y con una tolva de 4.000 l de capacidad, en un día con climatología adversa (velocidad del viento en el límite de lo admisible). Para ello trabajamos codo con codo con el dueño de la abonadora y explotación Pedro Ujue, y con el fabricante, Francisco Aranaz (gerente de la empresa) y Mikel ***** (técnico de campo), y establecimos un conjunto de ensayos que relatamos a continuación.
Proyecto:


Hardi Iris-2: calidad visible

  • Valero Ubierna, Constantino
  • Diezma Iglesias, Belen
  • Moya Gonzalez, Adolfo
  • Correa Farias, Christian
  • Garrido Izard, Miguel
  • Barreiro Elorza, Pilar
  • Gracia, Carlos
  • Fernández, Elena
Los pasados días 4y 5 de junio tuvimos la oportunidad de probar en Lleida el modelo de pulverizador Mercury 3500 de Hardi, equipado con el nuevo sistema Iris-2. El objetivo de la prueba fue caracterizar no solo la máquina y sus especificaciones técnicas, sino la calidad de su trabajo, verificando asimismo el consumo de combustible.
Proyecto:


Common causes of failure of pneumatic distributors in high precision pneumatic seeders: Proposals towards predictive maintenance

  • Barreiro Elorza, Pilar
  • Urbina, Diego
  • Diezma Iglesias, Belen
  • Moya Gonzalez, Adolfo
  • Garrido Izard, Miguel
  • Valero Ubierna, Constantino
Modern precision pneumatic drills (1-500 kg/ha) used in the cultivation of high density crops such as winter cereals (up to 400 plants/m2) are very high performance equipment that triple the working width (up to 9m) and rates (up to 14 km/h) compared to those used fifteen years ago. Most of enterprises commercialize such devices using as cornerstone a central pneumatic distributor in combination with a large number of radial outlets (24-48). In spite of the unquestionable advantages of these devices with regard to more conventional gravitational distributors, the main drawback remains the lack of transversal uniformity which has proven to be fairly sensitive to seed size and shape, to slight air flow changes related to partial obstructions of outlets, elbows and grips in discharge outlets, or vibrations and inclinations of the central distributor, as well associated to inadequate maintenance of the machine by untrained operators. Moreover, the lack of behavior predictability derives in a certain discredit of the pneumatic procedure. This work proposes a theoretical-empirical methodology to analyze the pneumatic circuit and its interaction with a variety of seeds types to be delivered, and selected operational machinery settings, within the aim of elaborating a test protocol which combined with low cost instrumentation will serve a base for predictive maintenance. Experimental data gathered in static and dynamic tests performed by the authors on at least two different seeders together with published information available on technical papers will be reviewed and used for further discussion on reliable diagnosis procedures
Proyecto:


Pig ear skin temperature and feed efficiency: Using the phase space to estimate thermoregulatory effort

  • Requejo, José M.
  • Garrido Izard, Miguel
  • Correa Hernando, Eva Cristina
  • Villarroel Robinson, Morris Ricardo
  • Diezma Iglesias, Belen
Mammalian skin temperature is often used as an indicator of health status but has also been used in animal production as a proxy measure for thermoregulatory effort or energy wastage. An animal with a higher skin temperature may also have a lower feed efficiency. With advances in technology it is now feasible to continuously record temperatures of livestock over protracted periods of time. In this study, the ear skin pig temperature was related to feed efficiency using phase space diagram methodology. Fourteen Landrace finishers (all male) housed in one pen over a week at relatively high temperatures (average temperature throughout the experiment 27 C) were supervised. The date, time and amount of feed consumed per individual animals was monitored via an electronic feeding station. The number of visits to the feeding station was used as an indicator of physical locomotor activity. Each animal was weighed at the beginning and at the end of the experiment to calculate their feed efficiency. The areas of the phase space diagrams of skin temperatures were used to quantify the variability of the time temperature series. Two areas in the phase space were correlated with feed efficiency (r ¼ 0.77) and physical locomotor activity (r ¼ 0.53). An index was developed that includes both areas, which increased the correlation between the variability of ear skin temperature and feed efficiency to r ¼ 0.85. This methodology could be used to help categorise pigs in terms of feed efficiency for rapid phenotyping.
Proyecto:


New Holland T6.175 Dynamic Command

  • Barreiro Elorza, Pilar
  • Garrido Izard, Miguel
  • Diezma Iglesias, Belen
Durante dos días y aprovechando las instalaciones del Campus de New Holland en Segovia, hemos podido analizar en profundidad el modelo T6.175 Dynamic Command, poniendo la marca a nuestra a disposición dos tractores, uno con pala/horquilla cargadora y otro con vertedera.
Proyecto:


Kubota M7152 Powershift y KVT

  • Barreiro Elorza, Pilar
  • Diezma Iglesias, Belen
  • Garrido Izard, Miguel
En esta prueba de campo realizada el 27 de septiembre en Balisa (Santa María la Real de Nieva, Segovia) en la explotación agrícola de Vicente Palomares y Mª Angeles Roguero, verificamos las prestaciones del tractor M7152 con dos configuraciones de cambio distintas: powershift con 30 marchas o transmisión continua, labrando con grada rotativa una parcela de 3,7 ha, y en un transporte con cisterna de purín (24 t). Los resultados más llamativos se resumen a continuación.
Proyecto:


Evaluating Pig Ear Skin Temperature : Intercontinental Transport vs Housing Conditions

  • Garrido Izard, Miguel
  • Requejo, José M.
  • Correa Hernando, Eva Cristina
  • Diezma Iglesias, Belen
Variations in the skin temperature are often used as indicators of stress in animals. With advances in technology, it is now feasible to record high frequency livestock temperatures continuously for extended periods. In this study the objective was to analyse the response of pigs to different environmental conditions. The ear skin temperature of two batches of animals in intercontinental transport and housing was registered and characterized by the use of phase space diagram methodology. Eleven pigs were monitored during transport from a farm located in Reston (Canada), until their arrival at a farm in Montiel (Spain) during May 2016. After the itinerary by airplane and trucks separated with rest housing, pigs arrived to the farm after 94 hours. Fourteen finishers were monitored in one pen on a breeding farm in Villatobas (Spain) during one week in June 2017. To measure ear skin pig temperature, one logger with temperature sensor was glued to the RFID tag of each pig and placed on the inside half of the left ear. The areas and centroids of the phase space diagrams of ear skin temperatures were used to quantify the variability of the time temperature series. It was considered analysis of full times series and time series by periods (transport modality, transport transfers and day and night). The time series pattern for each individual was analysed independently in order to identify differences between animals of the same batch. The thermal variability between animals of the same batch was higher during transport than those identified in housed animals. The maximum and minimum areas for an animal during transport were 60-77% higher than the areas for housed animals, indicating more exposure to thermal stress during transport management.
Proyecto:


Long-term tracking and automated analysis of tractor behaviour with Jdlink

  • Barreiro Elorza, Pilar
  • Rueda, Ismael
  • Rabasco, Antonio
  • Garrido Izard, Miguel
JDLINK is an application for farm management under a precision agriculture strategy (variable rate application of inputs with geolocated data and maintenance alerts among others. It allows accessing to isolated or groups of machines, with the possibility of downloading CAN BUS data in periods established by use (engine hours) or by date. JDLINK can be considered a SCADA (System Control - SC- and Data Acquisition -DA-) where the visualization of data is indispensable to the manager of the fleet of machines. Our approach in this research is clear: What practical recommendations in terms of energy efficiency, work performance and improvement of use (maintenance) can be made based on the automate analysis of the information contained in JDLINK? For this prospective study, two tractors were used: one 8345R of 380 HP (1000 hours) belonging to a cooperative in Navarra (Spain), and another one 7230R of 230HP (500 hours) belonging to a private farmer in Ciudad Real (Spain); we chose 42 variables: 17 motor, 10 on maintenance and 17 derived from the tasks performed. Then we programed and tested an automated multivariate analysis for the recognition of agricultural activity patterns which consists of a Principal Component Analysis (PCA), an unsupervised cluster (Cluster) and a multiple analysis of variance or MANOVA. The use of the automated procedure has led to the isolation of several patterns as identifiable tasks four in the case of 8345R and six different patterns for the 7230R tractor. As a consequence, a multivariate pattern became available and thus the identification of machine performance and fuel consumption pattern (l ha-1). Moreover, clear conclusions were derived upon the misuse of counterweights, low level and excessive variability of slippage (below 4% on average basis. At present this procedure is available for dealers to provide highly valuable agricultural consultancy for farmers.
Proyecto:


New Holland PSH-V semisuspendido de siete cuerpos

  • Garrido Izard, Miguel
  • Barreiro Elorza, Pilar
  • Diezma Iglesias, Belen
  • Valero Ubierna, Constantino
Trabajando con el arado del título hemos evaluado la capacidad de trabajo, maniobrabilidad y calidad de la labor del arado de vertedera New Holland PSH V de siete cuerpos con regulación hidráulica tanto del ancho de trabajo como de la protección contra sobrecargas. Durante esta prueba se ha determinado asimismo la condición de mínimo consumo cuando se trabaja en combinación con un tractor New Holland T8.380, aunque este apero está también indicado para los tractores de la serie T7. Por último, se hacen recomendaciones sobre las secuencias óptimas en cabeceras y se acota la duración óptima y el espacio requerido para las maniobras.
Proyecto:


New Holland T8.350 a examen, porte y transporte

  • Barreiro Elorza, Pilar
  • Diezma Iglesias, Belen
  • Garrido Izard, Miguel
  • Moya Gonzalez, Adolfo
En esta ocasión el tractor ensayado en el Campus de New Holland (Peñarrubias del Pirón) pertenece a la nueva serie T8 de la marca, en la que se ha introducido la transmisión continuamente variable Auto Command, dando lugar a los tractores más potentes y de más porte con CVT. El estado del suelo, después de varios días de lluvia y nieve (hasta 50 mm en los 3 días previos al ensayo, 23 de enero), condicionó el ensayo, obligándonos a centrar la jornada en la tarea de transporte, para la que New Holland señala que el T8.350 Auto Command está especialmente equipado y diseñado
Proyecto:


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