Effect of grazing on soil-water content in semiarid rangelands of southeast Idaho, K.T. (Keith) Weber, B.S. Gokhale, Journal of Arid Environments


Read full paper: Effect of grazing on soil-water content in semiarid rangelands of southeast Idaho, K.T. (Keith) Weber, B.S. Gokhale, Journal of Arid Environments

Summary: Although numerous factors influence soil-water content, it is considered a key indicator of rangeland health. This paper investigates the effect of grazing on soil-water content using three treatments within the same soil association. The treatments, simulated holistic planned grazing (SHPG), rest-rotation (RESTROT), and total rest (TREST) applied stocking rates of 36, 6, and 0 animal days/hectare respectively. Soil-water content was measured continuously from 2006 to 2008 using 36 capacitance sensors. Statistical analyses revealed differences in percent volumetric-water content (%VWC) and in all treatments, the SHPG pasture had the highest %VWC. Mixed procedures models indicate strong environmental and treatment effects as explanatory variables for the observed difference in %VWC. Although results of vegetation cover analyses indicated no difference in percent shrub cover in the two production pastures (SHPG and RESTROT), percent litter cover differed in the latter years of this study. It was concluded that in addition to a variety of other factors, management decisions (grazing and rest) can have substantial influence upon soil-water content and that soil-water content can vary substantially as a result of animal impact and the duration of grazing.

Savory Institute

Savory Institute

The Savory Institute is on a mission to regenerate the grasslands of the world and the livelihoods of their inhabitants, through Holistic Management. Since 2009, Savory Institute has been leading the regenerative agriculture movement by equipping farmers, ranchers, and pastoralist communities to regenerate land within culturally-relevant and ecologically-appropriate contexts.
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