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Factors influencing Plasmodiophora brassicae resting spore loads in soil and clubroot disease severity in canola (Brassica napus)
DownloadSpring 2015
Clubroot, caused by Plasmodiophora brassicae, is an important soilborne disease of Brassica napus canola. Studies were conducted to increase understanding of the impact of various soil parameters and crop rotation regimes on P. brassicae inoculum levels and clubroot severity, respectively. In...
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Genetic variation for nitrogen use efficiency in Canada Western Red Spring wheat (Triticum aestivum L.) under conventional and organic management systems
DownloadSpring 2018
Improved nitrogen use efficiency in cereal-based agricultural systems can contribute to increasing grain production while reducing agriculture-related pollution caused by nitrogen leaching, volatilization and denitrification. Organic agriculture differs to conventional systems in terms of in...
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Fall 2010
The development of a biorefining process acknowledges the feedstock characterization as it can often dictate the process technology. The maturity stages of agricultural feedstocks also have the potential for altering the process conditions. Thus, the variability of growth stages at 4-6 leaf,...
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Grounding global seeds: a contextual comparison of the politico-ecological implications of genetically modified crops for farming communities in Alberta (Canada) and Andhra Pradesh (India)
DownloadFall 2010
The main objective of my dissertation is to analyze and compare the socio-ecological implications of the adoption of genetically modified (GM) seeds and alternative agroecological farming methods for farming communities in Alberta, Canada and Andhra Pradesh, India – localities situated in...
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Identification and genetic mapping of resistance genes against Canadian pathotypes of Plasmodiophora brassicae in Brassica rapa and Brassica napus
DownloadFall 2022
Clubroot (Plasmodiophora brassicae) is an important disease of canola/rapeseed (Brassica napus) and other crucifers. In this study, resistance loci/genes effective against P. brassicae pathotypes 2B, 3A, 3D, 3H, 5C, 5X and 8J were identified and mapped via genotyping-by-sequencing, QTL analysis,...
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Fall 2010
Yield losses from infestations of root maggots (Delia spp.) (Diptera: Anthomyiidae) can be severe in canola crops in central Alberta. Studies were undertaken in central Alberta, Canada to manipulate agronomic practices that have potential to affect crop yield, root maggot infestations, and the...
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Improving Verticillium longisporum inoculation protocols and quantifying canola yield losses
DownloadSpring 2024
Verticillium stripe, caused by Verticillium longisporum, is an emerging soilborne disease of the Canadian canola (Brassica napus) crop. This study aimed to refine techniques for inoculating the pathogen on canola and to quantify its impact on hybrid canola yield under greenhouse and field...
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Spring 2010
Intercropping systems offer potential benefits relative to monocultures of increased crop yields and improved pest control through physical, chemical, or behavioural interference and the enhancement of natural enemy populations, prompting increased predation and parasitism. Intercrops of canola...
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Investigation on the uptake of functional proteins and infectious prions into wheat plants through the root system
DownloadSpring 2014
Prions are the proteinaceous particle responsible for infections in a class of neurodegenerative diseases. These diseases affect a number of mammals including cervids where it is termed Chronic Wasting Disease (CWD). Prions enter the environment and persist for years. Plants have the ability to...
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Lab-on-a-Chip Designs for Airborne Spore Detection: Towards the Forecasting of Sclerotinia Stem Rot of Canola
DownloadFall 2022
Sclerotinia stem rot (SSR), caused by the necrotrophic fungal pathogen Sclerotinia sclerotiorum, is one of the most devastating diseases affecting crops. More than 400 plant species around the globe are affected by this fungus. In canola, one of Canada’s most important crops, yield losses due to...