Now showing items 31-40 of 91
Soil N fluxes during fall
An evaluation of seed drills with various openers for seeding winter wheat in southwest Saskatchewan
Four seed drills were evaluated for seeding winter wheat in South West Saskatchewan. Furrow opener types were the Swift Current zero-till offset disc, an air-seeder with Dutch banding knives, the Swift Current zero-till ...
Effect of rainfall on N and P changes in fallow loam
Effect of moisture on nitrogen mineralization in some Saskatchewan soils
The ever-increasing cost of N fertilizer dictates the need for more efficient use of this nutrient in the future. This then demands that an accurate assessment be made of the N supply that can be expected from a soil. The ...
Nitrogen fertilizer management for maximum economic yields of spring wheat in southwestern Saskatchewan
The effects of snow trapping by means of alternative cereal stubble heights, and of N fertilizer management in terms of rates, times of application, and methods of placement on soil moisture conservation, grain yields, and ...
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 ...
Simulating nitrate leaching under dryland conditions: model validation for water and solute movement
There is an increased awareness of the possible leakage of nitrate out of agricultural systems and its potential to contaminate underground and surface water. This has led to the use of simulation mode s for studying the ...