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Côte-Saint-Luc, Canada

Raymond-Bayne S.A.,Laval University | Gosselin A.,Laval University | Desjardins Y.,Laval University | Gauthier L.,Les Fraises de lIle dOrleans Inc.
Acta Horticulturae | Year: 2012

An experiment was conducted in 2009 and 2010 on Ile d'Orléans, Quebec, Canada to determine the effect of 2 training systems (hedgerow and V-trellis), apex pinching at a height of 1.5 m, and reflective groundcover (ExtendayTM) on yield and yield components of 'Autumn Britten' primocane-fruiting red raspberry (Rubus idaeus L.) grown under high tunnels. Our results demonstrate a significant increase in raspberry yield (25%) with the use of the reflective groundcover. The increase in yield is consistent with a 450% increase in reflected light reaching the lower plant canopy at 0.5 m and 1 m above the ground. In contrast, the trellising systems did not exert any substantial effect on raspberry yield. When primocanes were pinched, no significant differences in total yield were observed, in spite of the one-week delay in the onset of fruiting. The present work demonstrates that it is possible to enhance raspberry yield by using reflective groundcover. Furthermore, our results indicate that pinching could improve harvest efficiency by maintaining fruiting zone to a manageable height without any significant reduction in yield. Source


Medina Y.,Laval University | Gosselin A.,Laval University | Desjardins Y.,Laval University | Harnois R.,Industries Harnois inc. | And 2 more authors.
Acta Horticulturae | Year: 2011

High tunnels are gaining in popularity in Canadian northern climates to prolong the growing season, increase yields and improve the quality of fruits and vegetables. An experiment in 2006 and 2007 was conducted under high tunnels and open fields to determine the effects of various plastic mulcheson microclimate conditions, growth, yields and fruit quality of day-neutralstrawberry. High tunnels (8.4 m wide, 4.8 m high and 145 m long) developed by Industries Harnois inc. were used at Les Fraises de l'Île d'Orléans inc.near Quebec City, Canada (latitude 47°, altitude 137 m). Four plastic mulches (green, grey on grey, white on black and black) obtained from Ginegar Plastics Products Ltd. were compared. Treatments were replicated four times and each experimental unit consisted of 26 strawberry plants of cultivar 'Seascape'. Soil at a depth of 10 cm and air temperatures at a height of 20 cmwere measured with Hobo temperature sensors obtained from MicroDaq Ltd. Plant growth was measured periodically, while yields were measured three timesper week. All mulch treatments under the high tunnels produced higher yieldthan the outdoor control. Black mulch caused excessive soil and air temperatures in tunnels, but was found adequate for the open field. Source


Xu Q.H.,Laval University | Qiu Ch.P.,Laval University | Gaudreau L.,Laval University | Gosselin A.,Laval University | And 3 more authors.
Acta Horticulturae | Year: 2016

High tunnel is rapidly and widely adopted to prolong the growing season of red raspberries throughout Canada. Floricane-fruiting red raspberries have a perennial root system, with above-ground biennial flowering canes. For a better plant management, it is necessary to monitor the marketable fruit yield of plant with different root age. An experiment was conducted in 2014 on Ile d'Orléans, Québec, Canada to determine the effects of growing conditions (high tunnel or open field) and age of root system (2-year-old or 4-year-old) on fruit yield, leaf area and dry weight of floricane-fruiting red raspberry (Rubus idaeus L.) 'Jeanne d'Orleans'. The results demonstrated that the growing conditions significantly influenced marketable fruit yield. Red raspberry plants grown under high tunnel produced about 1.6 or 3.0 times more marketable fruit yield than those grown in open field, respectively grown with 2-year-old or 4-year-old roots. In open field, plants grown with 2-year-old roots can produce 36.3% more marketable fruit yield than those grown with 4-year-old roots. However, under high tunnel, fruit yield of plants with 2-year-old roots was 25.4% lower than those with 4-year-old roots. Similar results were found for leaf area. As to shoot dry weight, both plants with 2-year-old and 4-year-old roots accumulated similar above-ground dry matter under high tunnel, but in open field, plants with 2-year-old roots can accumulate 48.3% more dry matter than those with 4-year-old roots. Source


Xu Q.,Laval University | Gosselin A.,Laval University | Desjardins Y.,Laval University | Medina Y.,Les Fraises de lIle dOrleans Inc. | Gauthier L.,Les Fraises de lIle dOrleans Inc.
Acta Horticulturae | Year: 2014

An experiment was conducted from 2011 to 2012 on Ile d'Orléans, Quebec, Canada to determine the effects of three growing environments (high tunnel, umbrella-like structure and open field) and reflective mulch (presence or absence) on fruit yield and berry size of floricane-fruiting red raspberry (Rubus idaeus L.) 'Jeanne d'Orléans' and of primocane-fruiting red raspberry 'Polka'. For floricane-fruiting red raspberry 'Jeanne d'Orléans', our results demonstrate that the growing environments significantly influenced fruit yield. High tunnel increased yield by 30.6% compared to umbrella-like structure, and 2.2 times the yield measured in open field. Reflective mulch had a positive effect on 'Jeanne d'Orléans' productivity and increased yield by 22.2%, 24.3% and 3.2%, respectively, under high tunnel, umbrella-like structure or open field. For primocane-fruiting red raspberry 'Polka', Both factors, growing environments and reflective mulches, significantly influenced fruit yield. High tunnel increased yield by 56.6% compared to umbrella-like structure, and 2.3 times compared to the yield measured in open field. Reflective mulch significantly increased yield by 13.6%, 14.8% and 29.5%, respectively, under high tunnel, umbrella-like structure and open field. Source


Qiu Ch.P.,Laval University | Xu Q.H.,Laval University | Gaudreau L.,Laval University | Gaudreau L.,Les Fraises de lIle dOrleans Inc. | And 5 more authors.
Acta Horticulturae | Year: 2016

The increasing demand of high quality raspberries in North America challenges traditional raspberry production. How to efficiently grow raspberry seedlings to improve yield performance per plant is a major growing concern. To verify and optimize raspberry production using root cuttings or bare root transplants, cultivated in soil or in pots, an experiment was conducted in 2013 and 2014 in Quebec, Canada, with the summer-fruiting red raspberry cultivar 'Jeanne d'Orléans'. During the vegetative growth year, root cutting propagation together with soilless cultivation, increased both cane height and diameter. Plants propagated from either two propagation methods, and cultivated in pots with substrate, produced a taller primocane with larger cane diameter than plants grown in soil. All plants were tipped at 100 cm at the beginning of the second year, and still, soilless cultivation increased leaf area of the floricanes. There was no significant difference in yield between plants propagated from either two propagation methods. In contrast, soilless cultivation significantly improved fruit yield by increasing marketable and total fruit number and yield. No differences were observed in soluble solids content of fruits between all treatments. Source

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