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There are different types of greenhouses, but they all have large areas covered with transparent materials that let sunlight pass and block it as heat. The most common materials used in modern greenhouses for walls and roofs are rigid plastic made of polycarbonate, plastic film made of polyethylene, or glass panes. [1]
Polytunnels on Balhungie Farm, Angus. A polytunnel (also known as a polyhouse, hoop greenhouse or hoophouse, grow tunnel or high tunnel) is a tunnel typically made from steel and covered in polyethylene, usually semi-circular, square or elongated in shape.
Modern examples include Eli Zabar's Vinegar Factory Greenhouse, Gotham Greens, Dongtan, Masdar City, and Lufa Farms. The term building-integrated agriculture was coined by Ted Caplow in a paper delivered at the 2007 Passive and Low Energy Cooling Conference in Crete, Greece. [3]
Such coverings range from plastic mulch film, row coverings, high and low tunnels (polytunnels), to plastic greenhouses. Plastic used in agriculture was expected to include 6.7 million tons of plastic in 2019 or 2% of global plastic production. [22] Plastic used in agriculture is hard to recycle because of contamination by agricultural ...
Location of the province of Almeria (Spain). The intensive agriculture of the province of Almeria, Spain, is a model of the utilization of highly technical means to achieve maximum economic yield based on the rational use of water, use of plastic greenhouses, highly technical training and high levels of employment of inputs, applied to the special characteristics of a particular environment.
Controlled-environment agriculture (CEA) -- which includes indoor agriculture (IA) and vertical farming—is a technology-based approach toward food production. The aim of CEA is to provide protection from the outdoor elements and maintain optimal growing conditions throughout the development of the crop.