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Solarization with biodegradable film

The banning of fumigation systems with methyl bromide, established by the Montreal Protocol in 1987, with subsequent and periodic limitations imposed on the use of other active ingredients, such as 1.3 dichloropropene, chloropicrin, etc., have oriented research for the sanitation of agricultural land towards more sustainable techniques with a lower environmental impact.

In recent years, in addition to a strong push due to genetic improvement and herbaceous grafting, systems that act directly on the health of the soil have become popular. Among these, solarization (a total mulching of the soil with a very thin and light-transmitting plastic film) has had considerable success. Using only solar radiation as an energy source, solarization can process real pasteurization of the ground and, avoiding the biological emptiness, proves to be a much less invasive solution than chemical means.

During the solarization period, it is essential that the ground cover system does not lose heat. EIFFEL's research focused on how to effectively retain most of the energy absorbed by solar radiation (NIR and UV) and stored in the ground during the day to maintain a constant thermal effect, thus reducing heat loss, both by convection and by radiation.

EIFFEL's Sales Manager, Dr. Aldo Maggi, explains how the company has innovated solarization: "EIFFEL has been producing successful films such as MULTISUN for many years, both in the traditional version and in the "gas barrier fumigation" version; extremely transparent and mechanically very tough films thanks to the 7-layers production technology that allows the maintenance of the soil temperature between 42 ° and 50 ° for a period between 4 and 8 weeks.

However, disposal costs at the end of the cycle are high and, unfortunately, increasing; this prompted us to develop the totally biodegradable version, the MULTISUN BIO. The film is produced exclusively with biodegradable polymers and biodegradable UV stabilizing additives, developed to ensure the right transmittance and a very high "greenhouse effect" while reducing the environmental impact, respecting the atmosphere and the European directives on the reduction of conventional plastic use. The great advantage of using MULTISUN BIO is that at the end of use, it is buried in the soil, through the normal practices of preparing the seedbed or transplanting, then naturally degrading in the substrate."

The MULTISUN BIO is already available up to a maximum width of 10 m at EIFFEL official dealers.

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