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| Container rose production in a retractable roof greenhouse | |
| The utilization of retractable roof greenhouses can be advantageous in the cultivation of flowering rose plants in containers. Bare root roses were transfered into containers in late winter and forced into flower in a retractable roof greenhouse or outdoors until they were ready for sale. Plants of the cultivar ‘Mr. Lincoln’ in the retractable roof greenhouse had more leaf area and greater stem dry weight than the plants in the field. These differences were not evident in the cultivar ‘Oregold’. Water consumption related to leaf area. Plants of ‘Mr. Lincoln’ consumed more water per plant, but less on a per leaf area basis than ‘Oregold’.
In a second experiment, cultivars ‘Oregold’, ‘Angel Face’ and ‘Chrysler Imperial’ the plants forced in a retractable roof green house were taller, had a greater number of flowers with greater diameter. Leaf emergence was also earlier. In the case of ‘Oregold’ time to flowering was shortened. Overall, the water consumption of the plants in the retarctable roof green house was 13% lower than the field grown plants in full sun. Plants were dug from the field in January or February and placed for 0,4 or 8 weeks in cold storage before being potted and forced in a retarcatable roof green house or outdoors in full sun. Performance of containerized roses in a retractable roof green house or outdoors. U.K. Schuch, M.D. Lewis, T. Mahato. I SHS Acta Horticulturae 797: International Workshop on Greenhouse Environmental Control and Crop Production in Semi-Arid Regions www.actahort.org |
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