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  • Row cover

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    Floating row cover on a field in Norfolk. In agriculture and gardening, row cover is any transparent or semi-transparent, flexible material, like fabric or plastic sheeting, used as a protective covering to shield plants, usually vegetables, primarily from the undesirable effects of cold and wind, and also from insect damage. In addition to reducing the drying effect of wind, row cover can provide a limited amount of warming by the same effect that cold frames, greenhouses, and polytunnels produce, creating a microclimate for the plants.

  • Visqueen

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    Visqueen is a brand of polyethylene plastic sheeting (typically Low-density polyethylene) produced by British Polythene Industries Limited. It is the registered trade mark of British Polythene Limited in numerous countries throughout the world. It is commonly between 4 and 10 mils (0.004 to 0.01 in./0.1 to 0.25 mm) thick and is available in clear, opaque, blue and black. Visqueen is used for many purposes. It is commonly used as a temporary tarpaulin, as a drop cloth when painting, to cover concrete as it sets, to line decorative ponds, and to cover the ground before applying stone or wood chips to prevent weed growth. Large (100 x 20 ft) sheets of Visqueen are used during floods to protect levees from wave wash erosion. It is often suggested for use in greenhouses. Visqueen is used as a condensation barrier inside walls when installing HVAC systems. It is also used as a ground cover in the crawl space of home foundations as a vapor barrier. The use of Visqueen underneath a basement is to prevent water infiltration from water present in the ground that would pass through the concrete or dirt floor and bring in unwanted dampness.

  • Plasticulture

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    Plastic mulch used for growing strawberries. The term plasticulture refers to the practice of using plastic materials in agricultural applications. The plastic materials themselves are often and broadly referred to as "ag plastics." Plasticulture ag plastics include soil fumigation film, irrigation drip tape/tubing, nursery pots and silage bags, but the term is most often used to describe all kinds of plastic plant/soil coverings. Such coverings range from plastic mulch film, row coverings, high and low tunnels (polytunnels), to plastic greenhouses. Polyethylene (PE) is the plastic film used by the majority of growers because of its affordability, flexibility and easy manufacturing. It comes in a variety of thicknesses, such as a low density form (LDPE) as well as a linear low density form (LLDPE). These can be modified by addition of certain elements to the plastic that give it properties beneficial to plant growth such as reduced water loss, UV stabilization to cool soil and prevent insects, elimination of photosynthetically active radiation to prevent weed growth, IR opacity, antidrip/antifog, and fluorescence.

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