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In this section, you can access to the latest technical information related to the PISA project topic.

Latest developments from Ampacet - Innovative solutions for agricultural films

Plasticultureis a growing market with increasing requirements towards higher crops qualityand yields to meet the needs of growing population. In order to help satisfythe market needs, Ampacet has developed a range of masterbatches for greenhouseand tunnel applications including Agristab 372, Agroclear Range, Heatscreen 34 andThermic 337.

To protectcrops from pests and diseases farmers usually apply fumigation pest control.Sulfur evaporators are one of the most commonly-used methods to fumigategreenhouses. But the use of sulfur fumigation leads to a loss of UV stabilizingproperties of the greenhouse film. Photo-oxidation of sulfur deposited on thegreenhouse film surface can yield acidic species, deactivating lightstabilizers (Hindered Amine Light Stabilizer - HALS) and resulting in earlydegradation of the film and shortening greenhouse shelf life.

Typicalgreenhouse film containing conventional nor HALS stabilizers is designed formaximum 3,000 ppm sulfur content and three years, or four seasons, ofeffectiveness, while the market tends to require greenhouses with longerlife-spans and higher pesticide usage, to withstand up to 5,000 ppm sulfur fora duration of more than three years.

Innovative Agristab additive technology fulfills newmarket requirements for a multi-season greenhouse with highly intensivepesticide usage, beyond the Spanish Committee for Plastics and Agriculture (Cepla)recommendations. Agristab 372 provides greenhouse film with outstandingresistance to pesticides, allowing usage of up to 5,000 ppm sulfur for agreenhouse that can last for more than three years. Agristab 372  also enables use of lower-gauge greenhousefilms in structures and the ability to target typical pesticide usage levelsof, for example, 1,500 to 3,000 ppm with lower amounts of stabilization. Agristab372 does not affect the colour of the greenhouse film and offers excellentlight transmission and optimized crop yield.

Anothertypical problem faced in greenhouses and low tunnels is linked to foggingphenomena.

Being awareof these reality, Ampacet has broadened its Agroclear range and introduced itsnew Agroclear 752 for 1 to 2 seasons greenhouses, low tunnels and early harvestcrop protection films. Ampacet Agroclear 752 allows, at very low additionrates, to provide outstanding and consistent antifog properties to protectionfilms used in agriculture and horticulture fields.  It maintains an excellent film transparency,avoids problems linked to fog formation (light transmission reduction and plantdamages), optimizes plant growth and supports crop yield.

Ampacet haspreviously introduced Agroclear 651 (102651), an efficient antifog masterbatchtechnology specially designed for critical multi-seasons low tunnels andgreenhouses films providing a very long term antifogging effect.

Heatscreen 34provides a “cooling” effect to greenhouses used under very hot climateconditions, limits overheating of the greenhouses inner atmosphere and avoidsdehydration of the plants. This enables an optimized plant growth.

Thermic 337retains a maximum heat inside the greenhouse and low tunnels during the nightby blocking the far infrared spectrum emitted by the ground, providing a “thermic”effect. This allows the greenhouse or low tunnels inner atmosphere temperatureto achieve an additional 1 to 3°C during the night leading to a higher plantgrowth rate, higher yield and anticipated harvest.

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