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Ontario biomass crops’ influence on soil organic carbon sequestration and potential biofertilizer enhancement of crop growth

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Title: Ontario biomass crops’ influence on soil organic carbon sequestration and potential biofertilizer enhancement of crop growth
Author: Simpson, Sean
Department: School of Environmental Sciences
Program: Environmental Sciences
Advisor: Thevathasan, NareshDunfield, Kari
Abstract: Across all soil types, soil organic carbon (SOC) in switchgrass (Panicum virgatum), Miscanthus (Miscanthus spp.) and conventional agriculture fields were 78.29 (±2.69), 65.91 (±3.08) and 61.85 (±4.14) Mg C ha-1, respectively. SOC in switchgrass grown in silt loam (98.50±3.64 Mg C ha-1) was significantly (p<0.05) greater than all other soil textures (sandy loam, loam and loamy sand) and crop types (Miscanthus and agriculture); suggesting that SOC sequestration is influenced by both biomass crop and soil type. When JumpStart® and inorganic fertilizer treatments were applied to established (2014) switchgrass plots, significantly (p<0.05) higher biomass yields of 14.49 (±1.37) and 10.80 (±0.21) Mg ha-1 were recorded for JumpStart® and inorganic fertilizer treatments, respectively, when compared to the zero-control biomass yield of 8.76 (±1.58) Mg ha-1. Results suggest that commercially available JumpStart® could replace inorganic fertilizer application to well-established switchgrass fields but, its influence on long-term biomass yields need to be verified.
URI: http://hdl.handle.net/10214/14345
Date: 2018-09
Rights: Attribution-NoDerivatives 4.0 International


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Attribution-NoDerivatives 4.0 International Except where otherwise noted, this item's license is described as Attribution-NoDerivatives 4.0 International