Now showing items 11-20 of 91
Spring wheat rotations in north-central Saskatchewan
Effects of rotation length, crop sequence, and fertilization on yields and economic performance of 10 spring wheat-based rotations are examined over a 27-year period (1960-86) on an Orthic Black Chernozem at Melfort, ...
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 ...
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 ...
Where is nitrogen going in long-term cropping systems?
Fertilizer nitrogen use efficiency (NUE) is normally low, and has led to the idea that a large proportion of N applied as fertilizer is lost from the soil. However, N balances calculated for a long-term rotation study at ...
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 ...
Relationship between soil texture and soil organic carbon at small field scale
The capacity of a soil to store organic carbon is related to its particle size distribution, or soil texture, mainly because the capacity of clay particles to stabilize organic materials. A study of the relationship of ...
A macro soil coring device