Polytunnels
Polythene film stretched over a galvanised steel structure 8m wide.
Saint-Rémy-de-Provence, Bouches-de-Rhône, France, July.
"Due to the intensity of sunlight in the south of France, we give a three-year warranty on the plastic film. The European maps of solar radiation allow us to calculate the durability of the films, and adjust our guarantees: up to five summers in the north, two in the south."
Didier Strolin, agricultural polythene film salesman, Arles, Bouches-du-Rhône, France
in " Planting patterns ", p. 67