SOME TYPES OF PLASTIC GREENHOUSES USED IN VARIOUS PARTS OF THE NORTHERN HEMISPHERE
A slide lecture of this kind cannot pretend to show the most satisfactory or most advanced types of plastic greenhouses in use in any country. Any individual horticulturist will have his own ideas on this subject which will be related to the constructional materials at his disposal, the type and value of the crop grown and local climatic factors.
There is still a tendency, in the United Kingdom at any rate, to regard plastics as alternatives to glass - the traditional material for crop protection, and to construct plastic greenhouses to conventional glasshouse design. By so doing we are not taking full advantage of the unique properties of the new plastic materials.
The slides I now wish to show you are offered in alphabetical order of the countries in which they were taken, for the simple reason that I am unable to find a more logical sequence of presentation.
( Follows the presentation of slides taken in Bulgaria, Canada, Canary Islands, France, Greece, Italy, Japan, Norway, U.S.S.R., United Kingdom and U.S.A.)