PLANT RESPONSES TO DIFFERENT PLASTIC GREENHOUSE COVERS

Cultivars of ‘Sonia’ and ‘Royalty’ roses and ‘Fiesta’ and ‘Spice’ pot chrysanthemums were grown in four plastic covered quonset greenhouses between 17 September 1982 and 20 May 1983. The covers were double layer air inflated polyethylene and PVC, double walled Tedlar and FRP. ‘Fiesta’ flowered earlier than ‘Spice’. Both cultivars flowered 1 to 3 days earlier under FRP than under the double glazed greenhouses.
No significant difference in plant quality was observed due to the covering material, but chrysanthemums grown under the double layer structures were slightly elongated.
Total and weekly rose production varied and definite differences in timing occurred due to both cover and cultivar.

III International Symposium on Energy in Protected Cultivation

J. Ferare, K.L. Goldsberry

https://doi.org/10.17660/ActaHortic.1984.148.80