2.2. Net characteristics
In order to test the effect of shading nets (color and shading intensity), four different shading nets were used: the photoselective nets including ‘colored-ColorNets’ (red, blue and black) as well as ‘neutral-ColorNets’ (pearl) with shading intensity of 40%
and 50% relative shading. The photosynthetically active radiation (PAR) was compared to the open field microclimate and production.
The color shade nets were obtained from Polysack Plastics Industries (Nir-Yitzhak, Israel) under the trade mark ChromatiNet.
These nets are unique in that they both spectrally modify, as well
as scatter the transmitted light.
The photo-selective net products are based on the incorporation of various chromatic additives, light dispersive and reflective elements into the netting materials during
manufacturing.
The shading nets were mounted on a structure about 2.0 m in height over the plants (screen house) or combined with greenhouse technologies.