Développement d'une régie de culture du safran (Crocus sativus) adaptée aux conditions climatiques québécoises

Authors: Ayari, Mohamed Amine
Advisor: Lapointe, Line
Abstract: Saffron is an autumn crocus that produces a highly valuable spice. Several saffron farms have been established over recent years in the province of Quebec. However, the edaphic and climatic conditions differ considerably compared to the countries of origin of the crop, which led us to test several aspects that could influence the saffron yield, including planting depth and planting period as well as the application of a combination of fertilizers, mycorrhizal fungi and biostimulants at planting. Since temperature strongly influences saffron flowering, continuous monitoring of soil temperatures was carried out throughout the year, along with a weekly monitoring of flower initiation from May to August. Both leaf and flower emergence were delayed, and final emergence reduced as planting depth increased. Planting at 10 or 15 cm seems preferable but stimulates the production of corms too small to flower. The best planting period is from the end of July until the third week of August. Fertilization hastened leaf emergence in the autumn and improved corm production and their nutrient content. The addition of mycorrhizal fungal spores as well as biostimulants had no effect on flowering or saffron yield. All treatments combined; flower production was good in only one of the three study years. It seems that the soil does not warm enough in July during flower induction. Moreover, in the study area, temperatures drop too rapidly during autumn, which delays flowering and reduces yields. It is proposed to cultivate saffron in more southern areas and to use techniques aimed at soil warming in order to increase saffron yields in Quebec.
Document Type: Mémoire de maîtrise
Issue Date: 2021
Open Access Date: 10 May 2021
Permalink: http://hdl.handle.net/20.500.11794/69062
Grantor: Université Laval
Collection:Thèses et mémoires

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