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Decomposition of and nutrient dynamics in leaf litter and roots of Poa ligularis and Stipa gyneriodes
(Academic Press Ltd-elsevier Science Ltd, 2003-11)
A field experiment was conducted in a temperate semi-arid grassland of central Argentina to determine mass loss and P and N concentrations of decaying leaf litter and roots of Poa ligularis (high-quality litter) and Stipa ...
Nutrient resorption from senescing leaves in two Stipa species native to central Argentina
(Wiley, 2003-04)
Nutrient resorption from senescing leaves enables plants to conserve and reuse nutrients. As such, it could be expected that plant species adapted to infertile soils have a higher nutrient resorption efficiency (percentage ...
Bud viability in perennial grasses: Water stress and defoliation effects
(Society for Range Management, 2002-03)
Effects of the timing and frequency of defoliation under different levels of soil water availability were evaluated on bud metabolic activity and subsequent outgrowth in the desirable (i.e., palatable) Stipa clarazii Ball. ...
Perennial grasses of different successional stages under various soil water regimes: do they differ in root length density?
(Interciencia, 2007-12)
La información sobre densidad de longitud de raíces (DLR) es escasa en gramíneas perennes de diferentes estados sucesionales expuestas a varios niveles hídricos del suelo. Los efectos de distintos niveles hídricos sobre ...
Effects of Defoliation at Varying Soil Water Regimes on Aboveground Biomass of Perennial Grasses
(Taylor, 2003-04)
We evaluated the effects of defoliation under varying soil water regimes on aboveground biomass of perennial grasses native to semiarid rangelands of central Argentina. The palatable species Stipa tenuis and S. clarazii ...
Variations in chemical composition associated with tissue aging in palatable and unpalatable grasses native to central Argentina
(Elsevier, 2005-02)
Tissue aging in unpalatable grasses appears to be associated with a rapid decay in nutritional value because grazers usually start to avoid them at early stages of maturity. The objective of the present study was to determine ...
Perennial grasses of different successional stages under various soil water inputs: do they differ in root length density?
(Asociación Interciencia, Venezuela, 2007-03)
Information about root length density (RLD) on perennial grasses of different successional stages exposed to various soil water inputs is limited. The effects on RLD of different soil water inputs were evaluated in the ...
Root growth, appearance and disappearance in perennial grasses: Effects of the timing of water stress with or without defoliationCroissance, naissance et mort des racines chez les gram-inées vivaces : incidence du stress hydrique dans le temps, avec ou sans défoliation
(Agricultural Inst Canada, 2002-12)
The effects ofearly and late defoliations were evaluated under different levels of soil water content on root growth, appearance and disappear-ance in Stipa claraziiBall, S. tenuisPhil., and S. gynerioidesPhil. Field studies ...
Soil Phosphorus Concentration under the Canopy of Perennial Grasses of Different Successional Stages Exposed to Water Stress
(Taylor & Francis, 2008-10)
In this field study, the effects of water‐stress, rainfed, or irrigated conditions on soil phosphorus (P) concentration under the canopy of the native grasses of semi‐arid Argentina (late seral Stipa clarazii Ball., early ...
Soil Phosphorus Concentration under the Canopy of Perennial Grasses of Different Successional Stages Exposed to Water Stress
(Taylor and Francis, 2008-10)
In this field study, the effects of water‐stress, rainfed, or irrigated conditions on soil phosphorus (P) concentration under the canopy of the native grasses of semi‐arid Argentina (late seral Stipa clarazii Ball., early ...