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Mostrando ítems 21-40 de 67
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Effect of deforestation and introduction of exotic grasses as livestock forage on the population dynamics of the cattle tick Rhipicephalus (Boophilus) microplus (Acari: Ixodidae) in northern Argentina
(2013-12)The effect of deforestation and the introduction of exotic grasses on the population dynamics of Rhipicephalus (Boophilus) microplus in northern Argentina was analysed. Biological parameters that were measured included ... -
Effect of epichloid endophytes and soil fertilization on arbuscular mycorrhizal colonization of a wild grass
(2016-08)Background and aims: Plants often establish multiple simultaneous symbiotic associations with different micro-organisms; however, the way in which each symbiont affects the other symbionts and the effects of these multiple ... -
Effects of deferred forage as winter cover on spring growth of the tropical grasses Chloris gayana and Panicum coloratum = Efectos del forraje diferido como cobertura de invierno en el crecimiento primaveral de las gramíneas tropicales Chloris gayana y Panicum coloratum
(2017-01)This pot study assessed the effects of deferring forage during autumn and leaving as winter cover on reducing cold damage to plants of 2 tropical (C4) grasses (Chloris gayana and Panicum coloratum) in a temperate environment ... -
Endophytes of native grasses from South America: biodiversity and ecology
(Elsevier, 2012-06)We review and present preliminary results of studies on cool-season grass endophytes native to South America. These fungi have been studied only in Argentina, where they have been detected in 36 native grass species. The ... -
Especies herbáceas nativas : aportes para su cultivo como coberturas vegetales en viñedos bajo riego en Mendoza : estudios de intercambio gaseoso, eficiencia hídrica y potencial alelopático de lixiviados
(Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba, 2013)Los cultivos de cobertura son utilizados dentro del manejo de suelo en viñedos como una herramienta ambientalmente sostenible con diversos objetivos. Mientras que las coberturas verdes contribuyen al secuestro y almacenamiento ... -
Evaluación de especies forrajeras para la mejora de sistemas silvopastoriles de Nothofagus antarctica.
(Universidad Nacional de la Patagonia Austral, 2014-10-17)Nothofagus antarctica (ñire) es una especie forestal nativa de Patagonia y actualmente el 70% de estos bosques están siendo utilizados como sistemas silvopastoriles (SSP) de manera extensiva. En un sistema silvopastoril ... -
Evaluación de gramíneas y leguminosas en mezclas para el centro de Entre Ríos. Villaguay 2018 – 2021
(EEA Concepción del Uruguay, INTA, 2022-04)Los objetivos del ensayo consistieron en "evaluar especies y mezclas perennes forrajeras de alta producción, calidad y persistencia bajo pastoreo directo" y "presentar una alternativa mejoradora a la mezcla más común usada ... -
Evaluación de la calidad nutricional en pasturas de gramíneas perennes relacionada con el estado fenológico y el ambiente en el Sur de Santa Cruz
(Universidad Nacional de la Patagonia Austral, 2022-09-30)En la Patagonia Austral la introducción de pasturas destinadas al uso estratégico en las áreas de mayor potencial representa una alternativa de manejo que permitiría aumentar la productividadde los sistemas ganaderos ... -
Evidence on the response of Patagonian forage grasses to the mulching effect of recent tephra deposits in Argentina
(Taylor & Francis, 2017-08-31)In Patagonia, arid and semiarid lands are being affected both by inappropriate management practices, which are leading to degradation, and by volcanic activity, whose effects are still unclear. This study aimed to test ... -
Evolución de la vegetación después del rolado y siembra de pastos nativos en La Rioja
(Universidad Nacional de La Pampa, 2013)En Los Llanos de La Rioja, el rolado y siembra de buffel (Cenchrus ciliaris L.) es una estrategia difundida para recuperar la productividad de aéreas altamente degradadas. La siembra de especies nativas surge como una ... -
Exploiting genetic and physiological variation of the native forage grass Trichloris crinita for revegetation in arid and semi‐arid regions: An integrative review
(2018-06)In arid, semi‐arid and dry subhumid regions, which represent ~ 41% of the Earth's land surface, desertification and soil degradation are very frequent, leading to low soil fertility and productivity. In these regions, ... -
Genetic and morphological characterization of Acroceras macrum Stapf
(Wiley, 2015-12)Acroceras macrum is a warm‐season grass used for pastures, and it has high nutritive value. The scarce genetic and reproductive information about this grass is limiting its breeding for forage. The objective of this research ... -
Germination of six native perennial grasses that can be used as potential soil cover crops in drip-irrigated vineyards in semiarid environs of Argentina
(2015-02)Native desert plants have structural adaptations that maximize photosynthesis rates and minimize water loss. They can be successfully utilized as soil cover crops in drip-irrigated vineyards where water availability is ... -
Germination requirements of two sheep-preferred grasses (Hordeum comosum and Koeleria vurilochensis var. patagonica) from semiarid Patagonian steppes
(Elsevier, 2012-03)Grazing by domestic exotic herbivores on native vegetation in Patagonian steppes has led to the deterioration of forage resources, where grasses are replaced by shrubs, and preferred grasses by non-preferred ones. Therefore, ... -
Grass-shrub coexistence: understanding root distribution in ecological sites of the Semiarid Chaco, Argentina
(Taylor & Francis, 2021-12)The objective of this study was to analyze the root distribution of grasses and shrubs, at different soil depths, in two ecological sites (ES): highland (forest) and lowland (grassland). The root density (RD) estimation ... -
Impacto de secuencias de cultivos y fertilización nitrogenada en gramíneas sobre la producción de soja
(EEA Oliveros, INTA, 2020)En la actualidad, existe consenso acerca de que en las actuales áreas agrícolas, la producción de alimentos debería ser incrementada principalmente a través de aumentos en los rendimientos de los cultivos por unidad de ... -
Influence of Soil Water Status on Arbuscular Mycorrhizas in Three Perennial Grasses in Central Argentina
(Finnish Zoological and Botanical Publishing Board, 2008-12)In this field study, we determined the effects of water stress, rainfed or irrigated conditions on the arbuscular mycorrhizal fungal (AMF) root colonization in the late-seral Stipa clarazii, the earlier-seral S. tenuis and ... -
Leaf expansion in grasses under salt stress
(Elsevier, 2009-07)Restriction of leaf growth is among the earliest visible effects of many stress conditions, including salinity. Because leaves determine radiation interception and are the main photosynthetic organs, salinity effects on ... -
Litter decomposition and nutrients dynamics in Nothofagus antarctica forests under silvopastoral use in Southern Patagonia.
(Springer, 2012-01-24)The role of environmental variables on litter decomposition and its nutrient release in Nothofagus antarctica forest in Patagonia is poorly understood. Moreover, in these forests under silvopastoral use there are few ... -
Management of excess standing biomass in Argentinean grasslands to increase grass and livestock productivity
(Faculty of Agricultural Sciences, University of Hohenheim, 2016)Grasslands are the main source of feed for cattle in Argentina. Standing dead biomass (SDB) accumulation threatens efficient resource use. To reduce dead biomass pools in Northern Argentinean rangelands, high impact grazing ...