Canadian Journal of Soil Science

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Soil enzymatic factors expressing the influence of land use, tillage system and texture on soil biochemical quality
Canadian Journal of Soil Science - Tập 80 Số 3 - Trang 419-428 - 2000
Carlos M. Monreal, D. W. Bergstrom
We identified complexes of soil nutrient mineralising enzymes expressing the influence of land use, tillage system and texture on soil biochemical quality in production systems involving corn, soybean, wheat and oat. The activities of dehydrogenase, β-glucosidase, L-glutaminase, urease, alkaline phosphatase, and arylsulphatase were measured in 760 soil samples taken from the A horizon of uncultiva... hiện toàn bộ
Nitrogen release during decomposition of crop residues under conventional and zero tillage
Canadian Journal of Soil Science - Tập 86 Số 1 - Trang 11-19 - 2006
Newton Z. Lupwayi, George W. Clayton, John T. O’Donovan, K. Neil Harker, T. K. Turkington, Y. K. Soon
The litter-bag method was used in field experiments to determine nitrogen (N) loss patterns from decomposing red clover (Trifolium pratense) green manure (GM), field pea (Pisum sativum), canola (Brassica rapa) and monoculture wheat (Triticum aestivum) residues under conventional and zero tillage. Nitrogen contained in crop residues ranged from 10 kg ha-1 in wheat under both tillage systems to 115 ... hiện toàn bộ
USE OF THE LIQUID LIMIT IN CHARACTERIZING CLAY SOILS
Canadian Journal of Soil Science - Tập 52 Số 3 - Trang 457-464 - 1972
B. P. Warkentin
An index property for clay soils is sought to give the information that grain size gives about coarse-grained soils. The liquid limit is suggested as such an index property. The liquid limit is closely related to surface area for clay soils containing tabular clay minerals. This relation exists also for soils containing allophane or amorphous material. In addition to estimating surface area, liqui... hiện toàn bộ
Nitrogen availability for corn in soils amended with urea, cattle slurry, and solid and composted manures
Canadian Journal of Soil Science - Tập 73 Số 2 - Trang 253-266 - 1993
J. W. Paul, E. G. Beauchamp
This study was conducted to determine whether manure N availability for corn (Zea mays L.) was best estimated by a component of the manure N or by soil inorganic N in May or June. Liquid dairy cattle manure, solid beef cattle manure, and composted beef cattle manure were applied in the spring of 1988, 1989 and 1990 at rates of 100, 200 and 300 kg N ha−1. Urea was applied at rates of 50, 100 and 15... hiện toàn bộ
Comparison of soil-to-water suspension ratios for determining electrical conductivity of oil-production-water-contaminated soils
Canadian Journal of Soil Science - Tập 96 Số 2 - Trang 233-243 - 2016
Aaron W. Klaustermeier, Hannah Angie Kelsey Tomlinson, Aaron Lee M. Daigh, Ryan F. Limb, Thomas M. DeSutter, Kevin K. Sedivec
Soil salinity caused by oil-production-water (brine) contamination is a major issue in regions of oil and gas development. However, rapid site assessment tools such as soil-to-water suspension electrical conductivity (EC) methods and conversion equations have not been previously calibrated and validated for brine-contaminated soils. Our objective was to compare three soil EC methods and derive con... hiện toàn bộ
Adopting zero tillage management: Impact on soil C and N under long-term crop rotations in a thin Black Chernozem
Canadian Journal of Soil Science - Tập 81 Số 2 - Trang 139-148 - 2001
C. A. Campbell, F. Selles, G. P. Lafond, R. P. Zentner
Society’s desire to sequester C in soils, thereby reducing the net loss of CO2 (a greenhouse gas) to the atmosphere, is well known. It is also accepted that the choice of appropriate agricultural management practices adopted by producers will affect this goal. However, quantification of the extent and rate at which it can be achieved is uncertain. A crop rotation experiment that was initiated in 1... hiện toàn bộ
Economics of reduced tillage fallow-crop systems in the Dark Brown soil zone of Alberta
Canadian Journal of Soil Science - Tập 76 Số 3 - Trang 411-416 - 1996
Elwin G. Smith, Robert E. Blackshaw, C. W. Lindwall, Francis J. Larney, T. L. Peters
The use of conservation tillage management in fallow cropping systems reduces soil erosion and improves soil quality. The economic benefits of these alternate tillage methods are less certain. This study examined the economic returns from reduced tillage methods on fallow using yield and input data from two experiments at the Agriculture and Agri-Food Canada Research Centre at Lethbridge, Alberta.... hiện toàn bộ
Pelletized organo-mineral fertilizer product as a nitrogen source for potato production
Canadian Journal of Soil Science - Tập 85 Số 3 - Trang 387-395 - 2005
Bernie J. Zebarth, R. Chabot, J. Coulombe, R. R. Simard, J. Douheret, Nicolas Tremblay
Replacement of mineral fertilizer with organo-mineral fertilizer products made with animal manures is one strategy for reducing the environmental impact of agricultural production. This study evaluated a pelletized organo-mineral fertilizer product with a nutrient analysis of approximately 7-4-4 produced from composted solid poultry, solid dairy and liquid hog manure as a N source for processing p... hiện toàn bộ
Impact of potato-cereal rotations and slurry applications on nitrate leaching and nitrogen balance in sandy soils
Canadian Journal of Soil Science - Tập 82 Số 4 - Trang 469-479 - 2002
Marc‐Olivier Gasser, M. R. Laverdière, Réal Lagacé, Jean‐François Caron
Groundwater quality is at risk when high levels of N fertilizers are used on sandy soils. A monitoring program was initiated in the summer of 1995, to quantify nitrate leaching in sandy soils used for potato production near Quebec city, Canada. Three drainable lysimeters were installed in each of five fields, for a total of 15 lysimeters. During a 5-yr monitoring period, crop N uptake, mineral and... hiện toàn bộ
Influence of biosolids and fertilizer amendments on physical, chemical and microbiological properties of copper mine tailings
Canadian Journal of Soil Science - Tập 90 Số 4 - Trang 571-583 - 2010
Wendy C. Gardner, Klaas Broersma, M. Anne Naeth, D. S. Chanasyk, A. Jobson
A 3-yr field study was conducted on two texturally different tailings sites at the Highland Valley Copper Partnership mine in south-central British Columbia to determine the effects of fertilizer and biosolids amendments on selected soil physical, chemical and microbiological properties. Soil bulk density and penetration resistance decreased in the upper 15 cm of tailings with increasing dry bioso... hiện toàn bộ
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