Optimisation de la production hors-sol de fraise à jours neutres sous abris
|Advisor:||Caron, Jean; Pépin, Steeve|
|Abstract:||In Canada, the strawberry producers are facing several major challenges. The production period is short, the competition is strong and the production has to deal with important telluric pathogens. The soilless production could help overcome these problems. To maximize productivity, experimental device was set up in 2013 and 2014 to Onésime Pouliot farm on the island of Orleans in the province of Quebec. This project seeks to demonstrate that in soilless production, the umbrella like rain shelter can produce more marketable fruit and decrease the risk of foliar disease. The project also aimed to evaluate some methods of culture that could help to extend the production period (greenhouse forcing) or optimize the use of water and fertilizers (capillary mat, alternate substrate). Five treatments were tested, the first four under umbrella like rain shelters (T1-T4) and the last one without coverage (C). The treatments T1 was grown on peat (PE) and T2 on a mixture of sawdust and peat (PS25). For T3, plants forced greenhouse were tested to extend the harvest. T4 treatment was cultivated on PE substrate and deposited on a capillary mat. When compared with the control, umbrella covered treatments led to a significantly lower incidence of late blight [Sphaerotheca macularis (Wall. Ex Fries)] and a higher yield of marketable fruit. In protected growing conditions, the plants forced in greenhouses achieved peak production at the most profitable period for fresh strawberries in Quebec for the summer of 2013. The capillary mat (T4) proved interesting since for a similar yield fruit, it had to use less water and fertilizer. Our results put lights on the potential of using umbrella production above ground strawberries in Quebec and offers appropriate recommendations as to the most cost-effective and sustainable production methods for local growers.|
|Document Type:||Mémoire de maîtrise|
|Open Access Date:||24 April 2018|
|Collection:||Thèses et mémoires|
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