Browsing Artículos científicos by Issue Date
Now showing items 41-60 of 132
-
Efecto del momento de quemado de centeno utilizado como cultivo de cobertura sobre propiedades edáficas, malezas y rendimiento de maíz = Effect of drying time rye used as cover crop on soil properties, weeds and yield of corn
(Facultad de Agronomía, UNLPam, 2016)Durante la última década se incrementó la superficie agrícola, que incluyó el uso de suelos poco aptos y su consecuente degradación en la Región Semiárida Pampeana. Los cultivos de cobertura son una herramienta que puede ... -
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 ... -
Comparing adjacent cultivated and “virgin” soils in wind erosion affected environments can lead to errors in measuring soil degradation
(Elsevier, 2016-02)Soil degradation has been frequently evaluated by comparing cultivated soils with paired reference pedons. Evaluated were some physical and chemical properties of cultivated and reference soils of a semiarid environment ... -
Light acidification in N-fertilized loess soils along a climosequence affected chemical and mineralogical properties in the short-term
(Elsevier, 2016-04)Some evidences indicate that N-fertilization of crops decreased pH values of loess soils of the Argentinean Pampas in the last decades. We analyzed the A-horizons of four N-fertilized (F) and non-fertilized (NF) paired ... -
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 ... -
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 ... -
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 ... -
Changes in fermentation and biohydrogenation intermediates in continuous cultures fed low and high levels of fat with increasing rates of starch degradability
(American Dairy Science Association, 2016-08)Excessive levels of starch in diets for lactating dairy cattle is a known risk factor for milk fat depression, but little is known about how this risk is affected by differences in rates of starch degradability (Kd) in the ... -
A wind-tunnel study on saltation and PM10 emission from agricultural soils
(Elsevier, 2016-09)PM10 emission depends on the texture and the aggregation state of a soil. A decisive but less studied factor is the saltation fraction of the soil (fraction between 100 and 500 μm). Six soils of contrasting textures were ... -
SPR Biosensing MUA/Poly-L-lysine platform for the detection of 2,4-Dinitrophenol as small molecule model system
(2016-10-18)Surface Plasmon Resonance assays are being developed as alternative biodetection methods for a great number of pesticides and toxins.These substances typically have low molecular weight, making it necessary to perform ... -
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 ... -
Control de la erosión eólica con un estabilizador artificial en un torripsammente ustico = Wind erosion control with an artificial stabilizer in an ustic torripsamment
(Asociación Argentina de la Ciencia del Suelo, 2016-12)La erosión eólica es uno de los principales procesos de degradación de suelos de ambientes áridos y semiáridos. Una alternativa de control de este proceso es la estabilización del suelo por medio de fijadores artificiales. ... -
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 ... -
Tolerancia a la salinidad en plántulas de agropiro criollo (Elymus scabrifolius) y agropiro alargado (Trinopyron ponticum)
(2017)El agropiro criollo (Elymus scabrifolius) y el agropiro alargado (Thinopyron ponticum) son dos forrajeras invernales, nativa y exótica, respectivamente, que soportan sitios halomórficos. Estas especies, mediante estrategias ... -
Supplementation of glycerol or fructose via drinking water to grazing lambs on tissue glycogen level and lipogenesis
(2017)Lambs (n = 18; 40.1 ± 7.4 kg BW) were used to assess supplementation of glycerol or fructose via drinking water on growth, tissue glycogen levels, postmortem glycolysis, and lipogenesis. Lambs were blocked by BW and allocated ... -
Dynamics of volcanic ash remobilisation by wind through the Patagonian steppe after the eruption of Cordón Caulle, 2011
(2017)Wind erosion of freshly-deposited volcanic ash causes persistent storms, strongly affecting ecosystems and human activity. Wind erosion of the volcanic ash was measured up to 17 months after the ash deposition, at 7 sites ... -
True bugs (hemiptera: heteroptera) associated with soybean glycine max (L.) merr.) in southern cone
(2017)The area selected for growing soybean (Glycine max (L.) Merr.) in Argentina, has increased in the last few years; reaching 28.6 millions hectars throughout the country, out which, 500.000 belong to La Pampa province. ... -
Eficiencia en el uso del agua en pasturas en un molisol de la Región Semiárida Pampeana = Water use efficiency of pastures in a mollisol of the Semiarid Pampa
(Facultad de Agronomía, UNLPam, 2017)Actualmente en la región semiárida pampeana se vislumbra un creciente interés por parte de los productores de incorporar nuevamente las pasturas dentro de la rotación de cultivos. En respuesta a esta demanda se planteó ... -
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 ... -
Determinación del intervalo hídrico óptimo en usoles de la región semiárida pampeana = Determination of least limiting water range in ustolls of the semarid pampas
(Asociación Argentina de la Ciencia del Suelo, 2017)En la región semiárida pampeana el intervalo hídrico óptimo (IHO) no ha sido utilizado para valorar cambios en la calidad del suelo relacionados al manejo. El objetivo del trabajo fue caracterizar y evaluar el IHO en un ...