Silage is the process of preserving forage, based on the lactic fermentation of sugar-rich plant matter. In the absence of oxygen, lactic acid bacteria degrade the organic matter and lower the pH, thus allowing forage to be preserved.

This process is an advantageous way to feed the animals throughout the year, taking advantage of the periods of higher plant production. Although during the process some nutrients are lost relative to fresh grass, silage is much richer nutritionally when compared, for example, to hay.

The process of silage can be very time consuming and exhausting, therefore, a correct selection and use of specific material for this purpose is fundamental to avoid compromising the whole process in the final phase. One has to consider that they will be subjected for long periods of time to heat, rain, and ultraviolet radiation, and the resistance of the material to these factors is fundamental to maintaining good quality forage.

The coating with white agricultural film accumulates less heat and allows easy visual inspection to detect breaks.