Now showing items 1-10 of 116
Chemical changes in cereal straw under two fallow systems and its relationship to nutrient availability
In recent years, conventional mechanical fallow has been partly replaced by herbicide-fallow on the prairies. With the chemical system of weed control, the straw is not mixed with the soil until seeding the following spring; ...
Characterizing soil phosphorus supply on aggrading and degrading management regimes
Practical concerns regarding P fertility usually focus on crop maturity and quality. However, on highly degraded soils P supply can be so low as to limit grain yield. A study of soils treated with conservation and conventional ...
Ion-exchange resin strips as plant root simulators
Ion-exchange resin strips have the potential to closely mimic the manner in which a plant root removes nutrient ions from the surrounding soil. A method was developed involving burial of resin strips in soil; followed by ...
Chemical changes in standing cereal straw residues in chemfallow and its relationship to N, P, and S availability in two cropping systems
In recent years, conventional mechanical fallow has slowly shifted to chem-fallow on the prairies. With the chemical system of weed control, the straw is not mixed with the soil until seeding the following spring; meanwhile ...
Salinity and salt contamination assessment using anion-exchange resin membranes
Exchange resins have the ability to sorb ions directly from the soil solution and, thereby show promise as a method to assess plant available nutrients. In salt affected soils, knowing the relative levels of various anions ...
Can the quality of soil structure be maintained following repeated applications of high rates of hog manure?
The long-term impact of repeated applications of high rates of liquid hog manure on the quality of the soil and that of the environment is not well known. For optimal application rates of hog manure, improved knowledge is ...
Tillage and phosphorus availability