Estudio del empleo de cubiertas vegetales temporales para la regulación del régimen hídrico, crecimiento y manejo sostenible del viñedo

RESUMEN El ensayo se llevo a acabo en un viñedo de Syrah durante 8 años y en un viñedo de Merlot durante 3 años. Ambos viñedos regados y situados en Colmenar de Oreja (Madrid) (40º 8’N, 3º 23’W) con clima típicamente Mediterráneo. Siete tratamientos con cubiertas vegetales se han comparado con dos tratamientos con suelo desnudo usados como control. Las cubiertas vegetales fueron seis tratamientos de cereales (Centeno) y un tratamiento de enyerbado autosembrado (Bromus spp) y los tratamientos de suelo desnudo fueron uno manejado con laboreo y otro manejado con herbicida. Los seis tratamientos de centeno se han manejado de seis formas distintas. La primera sembrada todos los años y eliminada en brotación mediante herbicida de post-emergencia. La segunda sembrada todos los años y eliminada un mes después de la brotación mediante siega. La tercera sembrada todos los años y eliminada en floración mediante siega. La cuarta sembrada todos los años y eliminada en brotación mediante herbicida de post-emergencia. La quinta sembrada todos los años y eliminada un mes después de la brotación mediante siega. La sexta sembrada todos los años y eliminada en floración mediante siega. La utilización de cubiertas vegetales ha tenido efectos beneficiosos sobre el contenido en materia orgánica, la compactación y la infiltración del suelo, mejorando las condiciones para el desarrollo de las raíces. Estas mejoras y la escasa competencia de la competencia durante el crecimiento del sistema radical de la vid han producido un incremento del sistema radical en las plantas mantenidos con cubierta vegetal. La competencia de las cubiertas vegetales ha reducido la disponibilidad hídrica de la vid, incrementándose la absorción en zonas con mayor disponibilidad hídrica (como la línea) antes de floración. El mayor desarrollo radical de las vides con cubierta autosembrada ha permitido agotar más intensamente las reservas de agua en el suelo. La competencia de las cubiertas ha reducido en mayor medida el desarrollo vegetativo que el productivo. Lo que ha disminuido, en algunas cubiertas vegetales, el consumo hídrico de la vid, aumentando el potencial hídrico foliar y la fotosíntesis durante la maduración. Sin embargo, el incremento en la fotosíntesis no ha compensado el mayor desarrollo foliar de los tratamientos con suelo desnudo, lo que ha provocado que estos tratamientos presenten la producción de materia seca más elevada. El empleo de cubiertas vegetales ha reducido la producción principalmente limitando el número de bayas por racimo, ya que el aporte de riego ha minimizado los efectos del manejo del suelo sobre el tamaño de baya. La utilización de cubiertas vegetales temporales ha mejorado la iluminación de los racimos, lo que ha producido un aumento de la síntesis de antocianos durante las primeras fases de la maduración, pero un incremento de la degradación de los mismos al final de la maduración. Esto ha provocado que durante la vendimia los tratamientos de suelo desnudo presenten un mayor contenido de antocianos por baya que los tratamientos mantenidos con cubierta temporal. Estos resultados muestran que el efecto del manejo del suelo depende en gran medida de las condiciones del medio, y que sus efectos en climas calidos y secos son muy distintos a los observados en climas frescos y húmedos. ABSTRACT The trial was conducted over a period of 8 years in a Syrah vineyard and over a period of 3 years in a Merlot vineyard. Both vineyards were irrigated and situated near Colmenar de Oreja (Madrid) (40º 8’N, 3º 23’W) a typical Mediterranean climate. Seven Annual cover crops treatments were compared to two bare soil treatments, used as control. Cover crops were six cereals treatments (Rye) and one auto-sowing treatment (Bromus spp) and the treatments of bare soil were one tilled management treatment and another with herbicide treatment. The six Cereal treatments were managed in different manners. First sowing every year and were eliminated in bud breaking with post-emergency herbicide. The second sowing annually and were eliminated one month after bud breaking through harvesting. The third sowing annually and were eliminated in flowering by mowing. The fourth sowing annually and were eliminated with post-emergency herbicide in bud breaking. The fifth sowing annually and were eliminated by mowing one month after bud breaking. . The third sowing annually was eliminated by mowing in flowering. The use of annual cover crop have improved soil organic matter, soil infiltration rate and soil solidity, resulting in a more favourable environment for roots growth. These improvements and low competitive ability during root growing have increases grapevine root density in plant management with cover crop. The Cover crop ability reduced plant available water, increasing root water uptake in the soil with more available water (such us line) before flowering. More growth of grapevine root density with auto-sowed cover crops has allowed using the water under soil more rapidly. The cover crop ability has reduced vegetative growth more than yield. What has been reduced in some vegetative cover crop has been the consumption of water, and increasing the leaf water potential and foliar and photosynthesis during growth activity. Moreover, the increased in photosynthesis activity could not “Compensate” higher leaf growth of treatment of bare soil, where these treatments had resulted in the greatest amount of dry material. The use of cover crops has reduced the crop mainly reducing the fruit set, because the irrigation had reduced the cover crop effect in the berry growth. The use of temporary cover crop increased berry sunlight exposure and skin anthocyanin synthesis during early rippenig, but excessively high temperature increased anthocyanin degradation during last part of ripenning. So, at the vineyard harvest period the treatments with bare soil plant had a more anthocyanin content per grape than the temporary cover crop plant treatments. These results suggest that the effects of soil handling mainly depends on the environmental condition, and their effects in hot and dry climate are so different from the effects in cold and moist climates

Comparación de la respuesta agronómica de varios clones de tempranillo comerciales y de nuevo desarrollo

Durante 5 años, se realizó la evaluación de 6 clones de Tempranillo en condiciones de riego deficitario controlado. La parcela experimental se encuentra en el C T V V El Socor ro (Colmenar de Oreja, Madrid). Se emplearon como testigos los clones comerciales el RJ75 y C L306. Los clones a evaluar se denominaron MDR-1, MDR-2, MDR-3 y MDR-4. Los parámetros evaluados fueron: el rendimiento y sus componentes, el vigor, la composición básica del mosto y la maduración polifenólica. Las diferencias más destacadas entre los clones se han debido al rendimiento y vigor. MDR-1 es el que de manera más constante obtiene mayor rendimiento. Su tendencia a baya pequeña garantiza la maduración de su gran cosecha. Su moderado desar rollo vegetativo le permite ahor rar agua avanzada la campaña. La alto índice de Ravaz es el responsable de que la maduración se vea ralentizada. Es el que obtuvo menor concentración polifenólica. El clon RJ75 tiene un alto potencial productivo, baya de tamaño medio y sarmiento de vigor medio por lo que se recomienda en zona cálida, con potencial ciclo largo y con disponibilidad de agua que garantice la maduración de una cosecha generosa y la actividad fotosintética de una gran cantidad de hojas. El clon MDR-2 es ligeramente menos productivo que los anteriores y con desar rollo vegetativo intermedio podría cultivarse en zonas de ciclo más corto y con mayor disponibilidad de agua que el MDR-1. El clon C L306 presenta un rendimiento medio en el conjunto de los clones estudiados. El vigor es medio-alto por lo que se recomendaría en zonas templadas y frescas en las que el ciclo sea corto. Es el que ha obtenido una concentración polifenólica más alta en el conjunto de los años. MDR-3 tiene un rendimiento interanual muy variable. MDR-4 tiene un rendimiento bajo y desar rollo vegetativo medio. Sería indicado para zonas frescas, de longitud de ciclo ajustada

Cluster microclimate (light and thermal) is a key point of grape maturity in mediterranean semiarid conditions

Se estudian la influencia en el microclima de racimos (temperatura e iluminación) de tres sistemas de conducción en la variedad Syrah en una zona calida

Effects of soil management in vineyard on soil physical and chemical characteristics

Cover crops in Mediterranean vineyards are scarcely used due to water competition between the cover crop and the grapevine; however, bare soil management through tillage or herbicides tends to have negative effects on the soil over time (organic matter decrease, soil structure and soil fertility degradation, compaction, etc). The objective of this study was to understand how soil management affects soil fertility, compaction and infiltration over time. To this end, two bare soil techniques were compared, tillage (TT) and total herbicide (HT) with two cover crops; annual cereal (CT) and annual grass (AGT), established for 8 years. CT treatment showed the highest organic matter content, having the biggest amount of biomass incorporated into the soil. The annual adventitious vegetation in TT treatment (568 kg dry matter ha-1) that was incorporated into the soil, kept the organic matter content higher than HT levels and close to AGT level, in spite of the greater aboveground annual biomass production of this treatment (3632 kg dry matter ha-1) whereas only its roots were incorporated into the soil. TT presented the highest bulk density under the tractor track lines and a greatest resistance to penetration (at 0.2 m depth). AGT presented bulk density values (upper 0.4 m) lower than TT and penetration resistance in CT lower (at 0.20 m depth) than TT too. Effects of soil management in vineyard on soil physical and chemical characteristics - ResearchGate. Available from: http://www.researchgate.net/publication/268520480_Effects_of_soil_management_in_vineyard_on_soil_physical_and_chemical_characteristics [accessed May 20, 2015]

Comparison of different methods of grapevine yield Prediction in the time window Between fruitset and veraison

Aim: To compare grape yield prediction methods to determine which provide the best results in terms of earliness of prediction in the growing season, accuracy and precision. Methods and results: The grape yields predicted by six models ? one for use at fruitset (FS), two for use at veraison (V1 and V2), and three for use during the lag phase (LP40, LP50 and LP60) ? were compared to fieldmeasured yields. Regressions for the yield predicted by each model were constructed. The V1 and V2 models had the highest R2 (0.75) and efficiency index (EF; 0.67-0.71) and the lowest RMSE values (±16-17%, or <0.5 kg per mof row). The FS model had the same or similar R2 (0.58), EF (0.06) and RMSE (±30%, or <0.83 kg per m of row) values as the LP models, but allowed yield predictions to be made one month earlier

Investigación joven con perspectiva de género VI

Actas del VI Congreso Internacional de Jóvenes Investigadorxs con perspectiva de género (Getafe, 16 - 18 de junio de 2021) organizado por el Instituto Universitario de Estudios de Género de la Universidad Carlos III de Madrid.El concepto de la vejes en la literatura griega arcaica / María Secades Fonseca se inscribe en el marco del Proyectos de I+D+i del Ministerio de Ciencia e Innovación, titulado Vulnerabilidad intrafamiliar y política en el mundo antiguo y dirigido por Susana Reboreda Morillo y Rosa María Cid López (Ref. PID2020-116349GB-I00).Generando una interpretación del Derecho en clave de igualdad de género / Alicia Cárdenas Cordón y Gloria Serrano Valverde es un trabajo elaborado y presentado en el marco del Proyecto de Investigación RTI2018-10669-B-100 ‘‘GEN-DER: Generando una interpretación del Derecho en clave de igualdad de género’’, enmarcado en el Programa Estatal de I+D+i Orientada a los Retos de la Sociedad- Ministerio de Ciencia e Innovación (2019-2021)

TRY plant trait database – enhanced coverage and open access

Plant traits - the morphological, anatomical, physiological, biochemical and phenological characteristics of plants - determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of trait‐based plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits - almost complete coverage for ‘plant growth form’. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and trait–environmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives

Métodos y técnicas de monitoreo y predicción temprana en los escenarios de riesgos socionaturales

Esta obra concentra los métodos y las técnicas fundamentales para el seguimiento y monitoreo de las dinámicas de los escenarios de riesgos socionaturales (geológicos e hidrometeorológicos) y tiene como objetivo general orientar, apoyar y acompañar a los directivos y operativos de protección civil en aterrizar las acciones y políticas públicas enfocadas a la gestión del riesgo local de desastre

Strategien der Arbeitszeitflexibilisierung und gewerkschaftliche Interessenvertretung das Beispiel Job Sharing

SIGLEIAB-90-0BD0-206200 AG 706 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Importance of canopy porosity into vineyard and the relationship with the grape maturity. Digital estimation method

In warm and dry climates, the use of porous systems should be required in order to allow a better leaf distribution inside the plant, causing more space in the clusters area and enhancing determined physiological processes so in the leaf (photosynthesis, ventilation, transpiration) as in berry (growth and maturation). Plant geometry indexes, yield and must composition have been studied in three different systems: sprawl with 12 shoots/m (S1); sprawl system with 18 shoots/m (S2) and vertical positioned system or VSP with 12 shoots/m (VSP1). Total leaf area increases as the crop load does, whoever surface area depends on to two factors: crop load and the training system (VSP vs . sprawl), which can provide differences in leaf exposure efficiencies. The main objective of this study was to validate digital photography measurements used to compare porosity differences among treatments and, as they affect plant microclimate and, therefore, yield and berry quality. Also, all previous studied indexes (LAI, SA, SFEr) tended to overestimate the relationship between exposed leaf surface and porosity of each treatment, but the use of digital method proved to be an effective tool in order to assess canopy porosity. Results showed that not positioned and free systems (sprawl) scored between 25 - 50% more porosity in the clusters area than the fixed vertical system (VSP), which resulted in a better plant microclimate for test conditions, mainly by improving the exposure of internal clusters and internal canopy ventilation. On the other hand, higher crop load treatment (S2) showed a real increase in yield (16%) without any relevant change into must composition, even improving total anthocyanin content into berry during ripenin