Now showing items 11-20 of 117
Dynamics of carbon dioxide evolution from decomposing wheat straw
Increasing concentration of CO2 in the atmosphere is a concern because of the potential for global warming. Carbon exchange between soil and the atmosphere has an important role in the global C cycle, but partitioning soil ...
Impact of crop rotation and tillage on some soil quality characteristics
An 11-yr rotation-tillage experiment conducted on a coarse-textured, Brown Chernozemic soil at Cantaur, southwestern Saskatchewan, was used to demonstrate the beneficial effects of reducing cropping frequency and tillage ...
A bioenergy success story: the energy savings implications of the increase in legumes in rotations since 1990
The energy savings achieved by the increase in field peas and lentil production in western Canada between 1990 and 1995 were calculated to be 4.46 PJ (petajoules) per year, equivalent to 1.7 % of the total energy costs of ...
Predicting the amount of nitrate-nitrogen and water in the soil profile
Four simulation models were used to predict the amount and distribution of nitrate-N and water in soil from long-term spring wheat (Triticum aestivum L.) rotations at the end of the 1990 growing season at Melfort, Saskatchewan. ...
Effects of fallow replacement green manuring with annual legumes on soil nitrogen availability
Legume green manures are used in crop rotations to enhance soil nitrogen availability and to provide ground cover for soil conservation. The annual legumes Black Lentil, Chickling Vetch, Tangier Flatpea, and a Feedpea ...
Effect of seeding date on yield and quality of winter wheat (cv. Norstar) grown on stubble and chemical fallow in south western Saskatchewan
Winter wheat (cv. Norstar) was seeded at one site (clay loam stubble) in 1984-85, and three sites (clay loam stubble and chemical fallow, sandy loam stubble, and heavy clay stubble) in 1985-86 and 1986-87. Conditions were ...
Effect of rainfall on N and P changes in fallow loam