Conservation tillage has been widely promoted to reduce sediment and nutrient transport from agricultural fields. However, the effect of conservation on export in snowmelt-dominated climates is not well known. Therefore, a long-term paired watershed study was used compare losses conventional Northern Great Plains region western Canada. During treatment period, dissolved concentrations were typically greater during spring snowmelt than summer rainfall events, whereas particulate nutrients...

Most beneficial management practices (BMPs) recommended for reducing nutrient losses from agricultural land have been established and tested in temperate humid regions. Previous studies on the effects of these BMPs cold‐climate regions, especially at small watershed scale, are rare. In this study, runoff water quality were monitored 1999 to 2008 outlets two subwatersheds South Tobacco Creek Manitoba, Canada. Five BMPs—a holding pond below a beef cattle overwintering feedlot, riparian zone...

In response to flooding and soil erosion impacting the South Tobacco Creek watershed in southcentral Manitoba, local landowners constructed a network of small dams reservoirs headwaters. Between 1999 2007, two dams/reservoirs (Steppler multipurpose dam Madill dry dam) were intensively monitored for their effectiveness reducing peak flows downstream sediment nutrient loading during spring snowmelt (typically mid-March mid-April) summer rainfall May November) periods. These small-scale...

Small dams and associated reservoirs have notable effects on soil water dynamics in prairie streams. In this study, we developed a simulation module of small the assessment tool (SWAT) to evaluate their long-term stream flow quality at watershed scale. To overcome challenges characterizing storage short retention time reservoir routing, concepts equivalent discharge are applied by which average daily calculated. Accordingly, sediment deposition nutrient abatement within computed using...

The fallout radionuclide cesium‐137 ( 137 Cs) has been successfully used in soil erosion studies worldwide. However, discrepancies often exist between the rates estimated using various conversion models. As a result, there is confusion use of models and interpretation data. Therefore, objective this study was to test structural parametrical uncertainties associated with four typically cultivated agricultural landscapes. For uncertainties, Soil Constituent Redistribution by Erosion Model...

One of the major threats to sustainability agriculture within Americas is that posed by soil erosion due actions rain, wind, and tillage. Soil degradation tillage greatest concern in regions where intensively tilled crops are grown on highly erodible landscapes. To date, very little research has been conducted potential for cultivated vegetable potato (<i>Solanum tuberosum</i> L.) production, especially steep mountainous agroecosystems. Therefore, objective this study was measure...

A 2‐yr study was initiated in the fall of 2000 to generate fundamental information on effects application date, landscape position, and a combined urease nitrification inhibitor (NBPT [N‐(n‐butyl) thiophosphoric triamide] DCD [dicyandiamide], respectively) rate transformation fall‐banded urea fertilizer into NH 4 + eventually NO 3 − under conditions typical for Manitoba, Canada. Landscape position did not have large effect conversion banded moisture present during autumn period at sites....

A 2-yr study was conducted to investigate the effects of application date, landscape position and a urease nitrification inhibited formulation urea on efficiency fall-banded N fertilizer under Manitoba conditions. To no studies have investigated how these factors interact influence in western Canada. The were apparent at three four sites, with significantly greater grain yields, straw yields total recovery high positions than low positions. In positions, there significant differences crop...

Girinka – or the one-cow per poor family program is currently being promoted as a poverty reduction strategy in Rwanda. One potential benefit of possibility to improve soil fertility through collection and application cow manure. No research, however, has been conducted date assess effectiveness manure usage amongst beneficiaries country. To address this, comprehensive study was Ngoma district current levels knowledge, attitudes, practices (KAPs) among beneficiaries. Preliminary results...

Girinka—or the "one-cow per poor family" program—is currently promoted as a poverty reduction strategy in Rwanda. In this program, resource-poor farmers receive dairy cow and develop various skills assets to improve their livelihood. One potential benefit of program is soil fertility through application manure. A study was conducted Ngoma district Rwanda assess effectiveness manure usage current levels knowledge, attitudes, practices among beneficiaries. Our results suggest that more than...

Abstract This study examined fertilizer nitrous oxide (N 2 O) emissions and canola ( Brassica napus L.) grain yield for two granular urea sources (conventional a dual urease nitrification inhibitor [SuperU]) three at‐planting placement methods (broadcast‐incorporated, shallow banded, deep banded) on commercial fields in Manitoba. Nitrogen (N) rates were 100% 70% of what was recommended based soil test target yield, with the treatments having N O monitored. SuperU consistently reduced (area‐,...

Abstract Opportunities exist to reduce nitrous oxide (N 2 O) emissions from nitrogen (N) fertilizers using enhanced efficiency (EEFs) and managing application timing. This study examined (1) timing (fall/spring) (2) fertilizer N source on O emissions, yield, uptake of Canadian hard red spring wheat ( Triticum aestivum L.) in Southern Manitoba. Fertilizer sources included granular urea four EEF products: polymer‐coated (environmentally smart [ESN]); plus nitrification inhibitor (eNtrench);...

The objective of this experiment was to quantify the effect landscape position and time application on agronomic efficiency fall‐banded urea [CO(NH 2 ) ] for spring wheat ( Triticum aestivum L.) grown in eastern prairie region Canada. Landscape positions were defined as high low based their relative elevations one another within field. Fertilizer treatments included banded at three different times fall (early, mid‐, late fall), planting, plus a control with no fertilizer N added. In...

Aquaculture has been one of the fastest-growing food production systems over last decade and increased intensification created conditions that favour disease outbreaks. Antibiotics are commonly applied in animal sector to fight against bacterial infections; however, their inappropriate use contributes emergence antibiotic-resistant bacteria. Investment research capacity-strengthening, parallel with enforcing existing regulations around antimicrobial use, potentially powerful tools tackling...

Abstract Strip‐tillage is an emerging conservation tillage/residue management system for corn production in the Northern Great Plains. Producers Manitoba are becoming more interested strip‐tillage as it may provide many of soil benefits no‐tillage without potential limitations cold soils spring common to this region. A 2‐year study evaluated ( Zea mays L.) response phosphorus (P) fertilization and conventional tillage systems. Fertilization treatments included a control (no P), two rates P...

Soybean ( Glycine max (L.) Merr.) production in Manitoba has increased substantially over the last 20 years, raising questions about phosphorus (P) fertilization this region. Between 2013 and 2015, a study was conducted across 28 sites to evaluate effect of P fertilizer rate placement on soybean plant stand seed yield. Treatments were 22.5, 45, 90 kg 2 O 5 ha −1 applied as monoammonium phosphate, seed-placed, side-banded or broadcast, plus an unfertilized control treatment. Plant reduction...