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Use of carbon isotope discrimination to indirectly select for improved seed yield in lentil
Carbon isotope discrimination (CID) has been proposed as a secondary trait to indirectly select for improved water use efficiency and seed yield. To determine the effectiveness of CID to indirectly select for seed yield, ...
Spatial and temporal variations of N2O evolution at the landscape-scale as affected by land use
Nitrous oxide has been widely recognized as a major scientific and environmental issue because of its involvement in global warming and destruction of the atmospheric ozone layer. Soils generally act as source of N2O, but ...
Survival of rhizobia in Saskatchewan soils as influenced by freeze/thaw cycling
Rhizobium leguminosarum biovar viceae are not native to Saskatchewan, but numbers of rhizobia in excess of l0^4 g-1 soil have been observed in fields previously grown to inoculated field pea (Pisum sativum L.). Modified ...
Landscape-scale variability of N2 fixation by pea
The landscape-scale variability of N2 fixation by pulse crops is an important part in the intensity of N cycling in a hummocky terrain. A 100-gridpoint landscape-scale research design was established at a site in the thick ...
Landscape-scale variability of nitrogen fixation and N balance of lentil
A study was conducted near Dinsmore, SK in the Dark Brown Soil Zone to determine the landscape-scale variability of N2-fixation and N balance of a lentil crop. Stable 15N isotope dilution method was used to determine ...
Seasonal fluctuations of N2O emission in different soil landscape systems
Nitrous oxide has been widely recognized as a major scientific and environmental ‘issue because of its involvement in global warming and destruction of the atmospheric ozone layer. The inherently high temporal and spatial ...
Nitrogen cycling in an alfalfa-bromegrass sward
Does crop residue N influence soil N availability?
A landscape study was conducted near Biggar, Saskatchewan, to study the influence of crop residues on the availability of soil N in the second phase of crop rotations. In order to compare leguminous and cereal residues, ...
Nitrogen fertilizer use and losses in irrigated cropping systems
The fertilizer-N use efficiency of irrigated canola, softwheat, durum, and spring wheat was determined in 1988 and 1989. Crops received various amounts of N, applied at time of seeding or split between time of seeding and ...