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Academic literature on the topic 'Cultures et azote – Québec (Province) – Évaluation'
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Dissertations / Theses on the topic "Cultures et azote – Québec (Province) – Évaluation"
Brassard, Mariane. "Développement d'outils diagnostiques de la nutrition azotée du maïs-grain pour une gestion optimale de l'engrais azoté /cMarianne Brassard." Master's thesis, Université Laval, 2007. http://hdl.handle.net/20.500.11794/18923.
Full textLachapelle, Jean-Mathieu. "Réévaluation des besoins en azote, phosphore et potassium des cultures de brocoli, de chou et de chou-fleur en sols minéraux au Québec." Master's thesis, Université Laval, 2010. http://hdl.handle.net/20.500.11794/21865.
Full textVerville, Frédéric. "Effet des engrais verts et de leur période d'enfouissement sur la nutrition azotée et les rendements du blé." Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/27289.
Full textThivierge, Marie-Noëlle. "Le millet perlé sucré et le sorgho sucré comme cultures énergétiques en conditions québécoises : potentiel de production, utilisation de l'azote, morphologie des racines et apport de carbone au sol." Doctoral thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/26494.
Full textSweet pearl millet [Pennisetum glaucum (L.) R.BR.] and sweet sorghum [Sorghum bicolor (L.) Moench] are annual crops from which the sweet sap can be fermented to ethanol. They appear to have a high nitrogen (N) use efficiency, but this remains to be demonstrated in eastern Canada. Studying the morphological traits of their rooting system could help understanding their N use efficiency. The main objectives of this study were to (i) compare both species for yield and N use efficiency, (ii) determine their response to increasing mineral N rate, (iii) compare their response to mineral vs. organic N sources (liquid swine and liquid dairy manures), (iv) compare their root morphological traits with those of grain corn (Zea Mays L.), the sole feedstock used for ethanol production in eastern Canada, and (v) compare annual carbon input to soil from these three species. Species were grown at two experimental sites in Quebec. The N rates that led to maximum sugar yield for sweet pearl millet and sweet sorghum were 86 and 91 kg N ha-1, depending on site. Mineral N fertilization resulted in greater yields than the liquid manures, which showed fertilizer N equivalences varying from 15 to 52%. Fifty-four to 82% of applied mineral N fertilizer was recovered in the aboveground biomass of sweet pearl millet and sweet sorghum. While root biomass and annual carbon input were greater with corn, the length of the rooting system and the proportion of very fine roots were greater with sweet pearl millet and sweet sorghum. Our results show a high N use efficiency of sweet pearl millet and sweet sorghum, and therefore indicate low environmental risk associated with their fertilization. Moreover, our results suggest that the peculiar root morphology of these crops contribute to their high N use efficiency.
Ndegue, Fongue Moïse Kouakou. "Efficience technique et efficience environnementale en agriculture." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28398/28398.pdf.
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