Method of controlling environmental conditions in the...

A - Human Necessities – 01 – G

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A01G 13/02 (2006.01)

Patent

CA 1292874

METHOD OF CONTROLLING ENVIRONMENTAL CONDITIONS IN THE PROXIMITY OF VEGETATION OR CROPS WITH THE AID OF PROTECTIVE SHEETING, PROTECTIVE SHEETING FOR USE IN THIS METHOD, AND A PROTECTIVE DEVICE COMPRISING SHEETING. ABSTRACT A method for controlling the environmental conditions in the proximity of vegetation or crops in the cultivation of plants is described in which use is made of protective sheets comprising a large number of microperforations having each a protruded rim, said microperforations having a diameter between 50 and 2000 µm and being present in a density of between 25 and 40000 microperforations per cm2. The invention also relates to plastics sheeting For use in said method and to a protective device for use in a greenhouse provided with such sheeting.

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