Browsing by Author "Schoenau, J."
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Item Effects of paratilling on soil bulk density and infiltration(2012-03-13) Ewen, B.; Schoenau, J.; Grevers, M.; Weiterman, G.Paratilling is a form of non-inversion deep tillage sought after by producers for its effectiveness at loosening soil structure without compromising the soil conservation practices that are already employed on the farm. An experiment was set up to evaluate the tillage effects of paratilling. Looking at changes to the soil physical properties, bulk density and infiltration, and crop yield. Initially, paraplowing reduced bulk density and soil strength but with over time these effects were eroded. At the Vertisolic site the effects were lost before the end of the first growing season, which may be a result of natural processes and the unusually wet spring. Infiltration increased as a result of paratilling. Soil loosening did not increase yield suggesting that soil structure is not limiting plant growth at these sites. Paratilling is only feasible if a yield response is observed.Item Evaluation of fate of added copper and zinc in prairie soils using chemical speciation and XANES spectroscopy(2018-03-06) Rahman, N.; Schoenau, J.; Peak, D.Item Micronutrients: unravelling the mystery(2018-03-07) Schoenau, J.; Anderson, S.; Maqsood, M.; Vandenberg, B.; Hangs, R.; Rahman, N.Item Screening for salt tolerance in native and exotic shrub willow(University of Saskatchewan, 2010-03-31) Hangs, R.D.; Schoenau, J.J.; Van Rees, K.C.J.; Steppuhn, H.Dryland salinity is a significant agronomic problem across the Canadian prairies, with an estimated four million hectares of salt-affected land. The potential exists to make better use of saline marginal lands by developing them into willow plantations as a bioenergy feedstock; however, relatively little is known about the salt tolerance of willow. Apart from limited anecdotal information, no empirical work has been done to examine willow growth on saline soil. The objective of this study was to compare the relative salt tolerance of 37 different native and exotic hybrid willow clones grown under controlled environment conditions on soils with varying salinity. The soils were collected along a hillslope catena influenced by saline seep salinity, containing high concentrations of sulfate salts, which commonly occurs within western Canada. Most willow clones tested in this study were able to tolerate slightly saline conditions (≤ 5.0 dS/m). In addition, several clones (Alpha, India, Owasco, Tully Champion, and 01X-268-015) showed no reduction in growth with moderate salinity (≤ 8.0 dS/m). This work should help to fill the current knowledge gap regarding the salt tolerance of willow and thus provide recommendations for which clones are best suited for establishment on salt-affected soils in Saskatchewan and abroad.