Artículos científicos: Envíos recientes
Mostrando ítems 101-120 de 165
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Análisis comparativo de dos técnicas para evaluar la capacidad de retención de agua en Chuquiraga erinacea Don = Comparative analysis of two techniques to evaluate the water storage capacity in Chuquiraga erinacea Don
(Facultad de Agronomía, UNLPam, 2018)La intercepción de lluvia es un proceso escasamente estudiado en ambientes áridos y semiáridos. El objetivo de este estudio fue analizar comparativamente dos técnicas de campo para evaluar la capacidad de retención de ... -
Primera cita de Ramularia collo-cygni para la provincia de La Pampa (Argentina) = First reported case of Ramularia collo-cygni for la Pampa province, Argentina
(Facultad de Agronomía, UNLPam, 2016)En la provincia de La Pampa, la superficie del cultivo de cebada se incrementó sustancialmente en los últimos cuatro años. El salpicado necrótico de la cebada, cuyo agente etiológico es Ramularia collo-cygni, está ... -
Germinación y crecimiento inicial de poblaciones de Trichloris crinita (lag.) Parodi ante condiciones de estrés hídrico = Germination and seedling growth of Trichloris crinita (lag.) Parodi under water stress conditions
(Facultad de Agronomía, UNLPam, 2016)Los pastizales naturales de Argentina se encuentran degradados por las inadecuadas prácticas de manejo desarrolladas durante varios años. Muchas especies nativas se encuentran en vías de experimentación como cultivo de ... -
Agricultural loess soils along a climosequence evidenced different susceptibility to acidification by simulated N-fertilization
(Elsevier, 2018)Agricultural loess soils of the central region of Argentina show acidification evidences linked to both climatic conditions and N-fertilization. Because of that, simulations to estimate the future acidification trends ... -
Occurrence of powdery mildew disease in wheat fertilized with increasing silicon doses: a chemometric analysis of antioxidant response
(Springer, 2016-08)Blumeria graminis (Bgt) is a pathogenic fungus that affects severally wheat plants provoking high losses in wheat production. Biochemical parameters like enzyme activity of catalase, superoxide dismutase, or peroxidases ... -
Efectos del tiempo de transporte, espera pre-faena y maduración en novillos sobre indicadores de estrés, calidad instrumental y sensorial de la carne = Effects of transport, lairage and ageing time on stress indicators and on instrumental and sensory quality of beef from steers
(Facultad de Ciencias Veterinarias, Universidad Austral de Chile, 2014)Se evaluaron los efectos de dos tiempos de viaje (TV, 3 h vs 8 h), dos tiempos de espera pre-faena (TE, 2 h vs 14 h) y cuatro tiempos de maduración (TM, 4, 6, 8 y 15 días) sobre la calidad instrumental y sensorial del ... -
Sequía e inundación en la hiperllanura pampeana. Una mirada desde el lote al municipio
(Universidad de Buenos Aires. Facultad de Agronomía, 2013)La variabilidad de las lluvias genera sequías e inundaciones que perjudican a campos y municipios. A nivel municipal frente al riesgo de inundación se reconoce el efecto crítico de las obras hidráulicas para defender ... -
Perennial warm-season grass monocultures and mixtures: Biomass production and soil improvement in semiarid and shallow soil conditions
(Elsevier, 2018-07)Perennial warm-season grasses (WSG) represent a viable alternative for cultivation in marginal lands. Moreover, mixtures of WSG can be expected to exceed monocultures in terms of biomass production since biodiversity and ... -
Effects of low-scale landscape structures on aeolian transport processes on arable land
(Elsevier, 2018-06)The landscape of the semiarid Pampa in central Argentina is characterized by late Pleistocene aeolian deposits, covering large plains with sporadic dune structures. Since the current land use changed from extensive livestock ... -
Meteorological conditions during dust (PM10) emission from a tilled loam soil: Identifying variables and thresholds
(Elsevier, 2017-10-15)Soil wind erosion and consequent PM10 emission is a complex process that has been related to surface properties and meteorological conditions. Most of the studies have emphasized on the relationship between the surface ... -
Evaluation of Tritrichomonas foetus infection clearance in heifers immunized with a single intravaginal dose of formaldehyde fixed strain B1 cells
(Elsevier, 2018-05-15)Vaccines against Tritrichomonas foetus have been shown to reduce the time of infection after natural or experimental exposure. The object of this study was to assess the protection against T. foetus infection conferred by ... -
Partition of some key regulating services in terrestrial ecosystems : meta-analysis and review
(Elsevier, 2016-08)Our knowledge about the functional foundations of ecosystem service (ES) provision is still limited and more research is needed to elucidate key functional mechanisms. Using a simplified eco-hydrological scheme, in this ... -
Effect of temperature on life history traits during immaturedevelopment of Aedes aegypti and Culex quinquefasciatus (Diptera:Culicidae) from Córdoba city, Argentina
(Elsevier, 2015-06)We investigated how ambient temperature under fluctuating conditions affects the larval–pupal immature traits of Aedes aegypti and Culex quinquefasciatus mosquitoes from Córdoba city, Argentina, and established each species ... -
Detección de Chlamydia abortus en pérdidas reproductivas de bovinos en la provincia de La Pampa, Argentina = Detection of Chlamydia abortus in bovine reproductive losses in the provinceof La Pampa, Argentina
(Asociación Argentina de Microbiología, 2018)Las pérdidas reproductivas constituyen una causa importante de pérdida económica en el ganado bovino, aunque en más del 50% de los casos la etiología es desconocida. Las especies de la familia Chlamydiaceae han sido asociadas ... -
Assessing the vulnerability of groundwater resources in semiarid lands of central Argentina
(Springer, 2018)Groundwater resources in semiarid lands of central Argentina are currently threatened by contamination from agricultural pesticides. The objectives of the present work were: (a) to estimate groundwater recharge on a monthly ... -
Effect of Lippia alba and Cymbopogon citratus essential oils on biofilms of Streptococcus mutans and cytotoxicity in CHO cells
(Elsevier, 2016-12)Background: Caries is a public health problem, given that it prevails in 60 to 90% of the school-age global population. Multiple factors interact in its etiology, among them dental plaque is necessary to have lactic ... -
Efficiency of Big Spring Number Eight (BSNE) and Modified Wilson and Cook (MWAC) samplers to collect PM10, PM2.5 and PM1
(Elsevier, 2016-06)The internal efficiency of Big Spring Number Eight (BSNE) and Modified Wilson and Cook (MWAC) samplers for trapping PM10, PM2.5 and PM1 were tested in a wind tunnel, at two wind speeds (3.0 and 6.8 m s 1) in the saltation ... -
PM10 emission, sandblasting efficiency and vertical entrainment during successive wind-erosion events: a wind-tunnel approach
(Springer, 2016-11)A wind-tunnel experiment was carried out to measure saltation and PM10 (particulate matter with a mean aerodynamic diameter less than 10 μ μ m) emission during three successive wind-erosion events on three different ... -
Morfometría de la cuenca alta del Río Colorado, Argentina = Morphometric of the Colorado River high basin, Argentina
(Universidad Nacional del Comahue. Neuquén. Departamento Geografía, 2018)Las subcuencas del río Grande y del río Barrancas conforman la cuenca alta del río Colorado y la abastecen de agua a partir de la nieve que precipita en las altas cumbres. Conocer las características morfométricas y ... -
Raíces de cultivos de cobertura. Cantidad, distribución e influencia sobre el n mineral = Cover crop roots: quantity, distribution and influence on soil mineral n
(Asociación Argentina de la Ciencia del Suelo, 2017)Los objetivos fueron: i) evaluar la cantidad y distribución de raíces de centeno y vicia como cultivos de cobertura (CC) y; ii) cuantificar el aporte de N de raíces en el perfil y su impacto sobre la disponibilidad de ...