WWRC 97-05ii
Establishment Rates and Biomass Production of Willow and Grasses Under
Greenhouse Conditions of Variable Soil Salinity and Nutrient Concentration
Abstract
Nearly all of the research on vegetation filters has
been conducted on acid to neutral wetland soils.
However, many of the riparian soils in Wyoming
cropland and rangeland areas are characterized as
sodic or saline. The relative amount of nitrate
removal from groundwater through denitrification
and plant uptake may be quite different under semi-arid
land conditions and should be determined in a
more realistic setting for western riparian areas.
Hybrid willow (Salix matsudana X alba), Jose tall
wheatgrass (Agropyron etongatum), Alkar tall
wheatgrass (Agropyron elongatum), Whitmar
beardless wheatgrass (Agropyron spicatum f. inerme).
Garrison creeping foxtail (Alopecurus pratensis),
and Magnar basin wildrye (Etymus cinereus)
were subjected to 3 levels of salinity and 5
different concentrations of phosphorus and nitrogen
inputs. Establishment rates of willows and grasses,
above- and below-ground biomass production, and
uptake of phosphorus and nitrogen were measured.
Preliminary results for willow and grass
establishment and above- and below-ground biomass
are presented.
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