Year: 2026, 2026
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Diversified agroecosystems supporting greater genetic, structural, and functional diversity improve soil health and ecosystem function. However, there is limited understanding of how multiple forms of diversification, such as mixing cover crop species and adding arbuscular mycorrhizal fungi (AMF), alter belowground carbon supply to soil. In a controlled environment experiment using… more Year: 2025, 2025
Member of: Trent University Graduate Thesis Collection
Abstract: <p>In an effort to improve upon existing analytical methods, electrochemical sensors offer portable, cost-effective alternatives to traditional lab-based techniques. Recent advances in supramolecular chemistry offer a unique alternative to achieve high selectivity while also benefitting from facile scaling for mass production. Thus, by incorporating host-guest chemistry with electrochemical… more Year: 2025, 2025
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Forests play a critical role in the global carbon cycle, acting as carbon sinks that remove and store an estimated 0.4 to 4.1 Pg of atmospheric carbon annually. However, historical acid deposition and timber harvesting have disrupted nutrient cycles, leading to nutrient-deficient soils that hinder tree growth, particularly for sugar maple (Acer saccharum), a keystone species in Ontario… more Year: 2024, 2024
Member of: Trent University Graduate Thesis Collection
Abstract: <p>In Ontario, farmers commonly use a MZ (Maize (Zea mays L.))-SB (Soybean (Glycine max))/WW (Winter wheat (Triticum aestivum)) – CC (mixed cover crop) rotation to maximize economic benefits. This study aimed to investigate the short-term impacts of the crop rotation phases and their associated management practices in this diversified cash crop rotation on soil health and the abundance of… more Full Text: SOIL HEALTH AND SOIL MICROBIAL RESPONSES TO CASH CROP MANAGEMENT IN ONTARIO A Thesis Submitted to the Committee on Graduate Studies In Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty of Arts and Science TRENT …
Year: 2024, 2024
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Eutrophication is an ongoing global problem and agriculture is an important non-point source of nutrient loading. Specifically, nitrogen (N) and phosphorus (P) losses from agricultural landscapes continue to drive water quality issues. In southern Ontario, agriculture has intensified in recent decades, with major expansions of cash crop production and extensive tile drainage (TD).… more Full Text: Effects of tile drainage, seasonality, and cash crop rotation on edge-of-field nitrogen and phosphorus losses from southern Ontario Watersheds A thesis submitted to the Committee on Graduate Studies In partial fulfillment of these thesis requirements for …
Year: 2024, 2024
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Agricultural and urban land uses have been linked to the recent resurgence of eutrophication and salinization issues in the lower Great Lakes. This thesis examined the relationship between watershed land use and stream nitrate-nitrogen (NO3-N), total phosphorus (TP), and chloride (Cl) concentrations across southern Ontario. Using a self-organizing map analysis, the watersheds were… more Full Text: EVALUATING THE RELATIONSHIPS BETWEEN LAND USE AND STREAM NUTRIENT AND CHLORIDE CONCENTRATIONS ACROSS SOUTHERN ONTARIO A thesis submitted to the Committee of Graduate Studies in partial fulfilment of the requirements for the Degree of Master of Science in …
Year: 2024, 2024
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Glyphosate burndown and tillage, followed by the cultivation of cash crops, are frequently used techniques in LUC from perennial cropping systems (PS) to annual cropping systems (AS). Agricultural LUC can result in the loss of soil nitrogen (N) via emission of nitrous oxide (N2O), a potent greenhouse gas (GHG). The purpose of this thesis is to investigate the short-term impacts of… more Full Text: SHORT-TERM IMPACTS OF AGRICULTURAL LAND USE CHANGE ON SOIL HEALTH AND NITROGEN CYCLING MICROBIAL COMMUNITIES A Thesis Submitted to the Committee on Graduate Studies In Partial Fulfillment of the Requirements for the Degree of Master of Science in the …
Year: 2024, 2024
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Glyphosate burndown and tillage, followed by the cultivation of cash crops, are frequently used techniques in LUC from perennial cropping systems (PS) to annual cropping systems (AS). Agricultural LUC can result in the loss of soil nitrogen (N) via emission of nitrous oxide (N2O), a potent greenhouse gas (GHG). The purpose of this thesis is to investigate the short-term impacts of… more Year: 2024, 2024
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Eutrophication is an ongoing global problem and agriculture is an important non-point source of nutrient loading. Specifically, nitrogen (N) and phosphorus (P) losses from agricultural landscapes continue to drive water quality issues. In southern Ontario, agriculture has intensified in recent decades, with major expansions of cash crop production and extensive tile drainage (TD).… more Year: 2024, 2024
Member of: Trent University Graduate Thesis Collection
Abstract: <p>In Ontario, farmers commonly use a MZ (Maize (Zea mays L.))-SB (Soybean (Glycine max))/WW (Winter wheat (Triticum aestivum)) – CC (mixed cover crop) rotation to maximize economic benefits. This study aimed to investigate the short-term impacts of the crop rotation phases and their associated management practices in this diversified cash crop rotation on soil health and the abundance of… more Year: 2024, 2024
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Agricultural and urban land uses have been linked to the recent resurgence of eutrophication and salinization issues in the lower Great Lakes. This thesis examined the relationship between watershed land use and stream nitrate-nitrogen (NO3-N), total phosphorus (TP), and chloride (Cl) concentrations across southern Ontario. Using a self-organizing map analysis, the watersheds were… more Year: 2022, 2022
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Katanda, Yeukai, Thesis advisor (ths): Hutchinson, Tom, Thesis advisor (ths): Thompson, Karen, Degree committee member (dgc): Sharifi, Mehdi, Degree committee member (dgc): Van Eerd, Laura, Degree committee member (dgc): Hooker, David, Degree granting institution (dgg): Trent University Abstract: <p>Ontario grain corn is highly valuable, accounting for 60% of Canada's total corn output. Grain producers are increasingly interested in including cover crops (CCs) in their cropping systems, but they have concerns regarding successful CC establishment and potential adverse competitive effects on corn yield and nutrient status. One option to improve the success of CC establishment is… more Full Text: INTERSEEDED COVER CROPS IN ONTARIO GRAIN CORN SYSTEMS: POTENTIAL IMPLICATIONS FOR CORN NITROGEN UPTAKE, SOIL HEALTH, AND RESIDUE DECOMPOSITION A thesis submitted to the Committee on Graduate Studies in partial fulfillment of the requirements for the …
Year: 2020, 2020
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Janik, Gabrielle, Thesis advisor (ths): Ponce-Hernandez, Raul, Degree committee member (dgc): Hutchinson, Tom, Degree committee member (dgc): Beresford, David, Degree committee member (dgc): Thompson, Karen, Degree granting institution (dgg): Trent University Abstract: <p>This thesis uses three approaches to assess the potential of permaculture in Central Ontario. This was done using a vegetable field trial and modelling programs to determine the effectiveness of permaculture to decrease negative impacts of climate change based on projected climate values derived from regional circulation models. The first approach showed no statistical difference (P<0… more Full Text: ASSESSING THE POTENTIAL OF PERMACULTURE AS AN ADAPTATION STRATEGY TOWARDS CLIMATE CHANGE IN CENTRAL ONTARIO A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the …
