Now showing items 1-10 of 16
Olsen-P distribution in a thin Black Chernozem as influenced by fertilizers and crop rotations
Inorganic phosphorus (P) is generally believed to be relatively immobile in Chernozemic soils. However, available P (e.g., Olsen-P) has been found at depth in some soils and this has been postulated to be either the result ...
Long-term use of urea vs. anhydrous ammonia for N-fertilization of a Dark Brown loam: III. Soil microbial populations and activities
The influence of fertilizers on soil quality, including soil microbial well-being, has been frequently questioned by proponents of organic farming and Low Input Sustainable Agriculture (LISA). A 10-yr experiment, conducted ...
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 ...
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 ...
Effect of rainfall on N and P changes in fallow loam
Long-term use of urea vs. anhydrous ammonia for N fertilization of a Dark Brown loam: I. Soil acidification and nutrient availability
The decline of indigenous soil fertility on the pra1r1es has necessitated higher nitrogen fertilizer inputs into cropping systems. Our objectives were to quantify the acidifying effects of urea and anhydrous ammonia nitrogen ...
Effects of grain lentil-wheat and monoculture wheat on crop production and N fertility in a Brown loam
Low commodity prices and a desire by producers on the Canadian prairies to reduce fertilizer N inputs has resulted in a marked increase in grain lentil production in recent years. Because a large proportion of the pulse ...