Tillage practices and weather affect the release of greenhouse gases but there have been few integrated studies of the quantities released or the mechanisms involved. No-tillage may increase emissions of nitrous oxide (N2O) and the ®xation of carbon by decreasing carbon dioxide (CO2) emissions. Tillage may also decrease the oxidation rate of atmospheric methane (CH4) in aerobic soil. These effe...

Contrasting tillage strategies not only affect the stability and formation of soil aggregates but also modify concentration thermostability organic matter associated with aggregates. Understanding carbon retention ability under different systems is essential to ascertain potential terrestrial storage. We characterized (SOC) within various aggregate size classes both zero conventional using nove...

Based on the hypothesis that soil properties and productivity components should be affected by different tillage methods, field laboratory experiments were conducted to study effects of zero (ZT), one pass disc plough (P), plus harrow (PH) two passes (PHH) distribution bulk density, available water capacity, pH, organic matter, phosphorus, iron oxide aluminium at depths, their productivity. The...

This study was conducted in 58 producer-field locations in Manitoba from 2003 to 2006 to understand how cropping practices influence Fusarium graminearum inoculum levels on stubble of various crops, including wheat, collected from the soil surface. Colonies per m (CN) were determined and converted to base-10 logarithm values (log10CN). Mean log10CN of the sampled field for various crops and gro...

A standalone version of the Wind Erosion Prediction System (WEPS) erosion submodel, the Single-event Wind Erosion Evaluation Program (SWEEP), was released in 2007. A limited number of studies exist that have evaluated SWEEP in simulating soil loss subject to different tillage systems under high winds. The objective of this study was to test SWEEP under contrasting tillage systems employed durin...

Tillage erosion is a potential contributor to the total soil erosion occurring within cultivated fields. No study has been carried out on tillage erosion associated with cereal-based production systems, which are the predominant form of crop production in the Canadian Prairies. Previous tillage translocation studies have focused on primary tillage implements (i.e. mouldboard and chisel ploughs)...