*3.2. Screens*

In rose cultivations in glass greenhouses in Greece, Kittas et al. [14,15] reported that the aluminized thermal screens achieved a more homogeneous microclimate and increased the winter air temperature, thus achieving energy savings of approximately 15%.

Sandri et al. [16] verified that the number of fruits per square metre did not differ in shaded tomato plantations (52%) when compared with those that were unshaded.

Medrano et al. [17] found that the use of external mobile shading reduced the transpiration rate in tomato plants.

Lorenzo et al. [19] explained that, in hot climates with sparse water sources, mobile shading can improve tomato quality and water-use efficiency.

In the north-eastern United States, Gent [21] achieved 9% more commercial tomato production with a 50% shade based on aluminized cloth; the shade only reduced the size of the fruits one of the five years that were studied; in addition, the amount of tomatoes with cracked skin was reduced by 10%.

Callejón-Ferre et al. [1] found that tomatoes have less ◦Brix when aluminized screens with 60% shading are used instead of traditional bleaching, but no difference was observed with a lower percentage shading.

García et al. [28] explain that mobile shading and misting are equally efficient in reducing high air temperatures.

Yasin et al. [37] studied how the use of greenhouse climate screens affected the growth and development of three common weeds; shade substantially reduced the height of the plant, the number of leaves, and the index of foliar chlorophyll content.

Costa et al. [38] evaluated the growth parameters of the tray seedlings, as well as the growth and production of plants in pepper pots in greenhouses with three different types of shading—transparent low-density polyethylene and reflective aluminized screen under the film, black filament with 50% shade, and aluminized screen—with better yields being obtained with the first method.

Holcman et al. [30] comment that in cherry tomato crops, a greater yield of the plant and greater average weight of the fruits are obtained with a diffusive plastic than with the use of a thermoreflective shading screen.
