Environmental Control
Plants are living, breathing and producing organisms. Just like any other living creature, they require nutrients with which they maintain their physiological processes and continue to develop.
The sun can bring 800 Watts per m2 inside a greenhouse. That is a huge amount of energy, especially considering the total size of greenhouses nowadays. For a 10-ha greenhouse, that equates to 80,000 kW! However, only two per cent is converted by the crop canopy for growth, the other 98 per cent will leave the greenhouse. In that sense, plant production is not very energy efficient.
What exactly is 'next generation' growing? Pieter Kwakernaak of Hoogendoorn explains how the three plant balances - water, assimilate and energy - should dictate how production practices are carried out in the greenhouse.
What if someone told you that plant physiology and physics could change the way you think about greenhouse climate control?
In late September, the AAC (Agricultural Adaptation Council) will be closing its application submissions for the “Greenhouse Competitiveness and Innovation Initiative” (GCII).
What if monitoring temperature controls was automated, and a grain bin itself could warn suppliers of low levels?
Aug. 10, 2015, Toyohashi, Japan — Nowadays it is not a surprise to get a tomato production of 50kg/m2 in a high-tech greenhouse; however it was a remarkable record in Japan.
May 21, 2015 – AccuWeather reports the upcoming summer will be very warm across much of western and central Canada as the cool weather will be mostly confined to Atlantic Canada.
June 2015 – Greenhouses, with their moist, warm atmospheres, may seem absolutely tropical to many people in late winter, but from the vegetables’ point of view, the proportion of warmth and humidity isn’t always optimal.
June 2015 – Year-round production of greenhouse flowers and vegetables requires heating, lighting and, at times, cooling. All of these things require energy. Efforts have been made since the 1980s to reduce the energy required for greenhouse production.
Mass production of beneficials is an extremely skilful process starting with the establishment of a good stock colony to packaging and shipment of the products.
Research on hydroponics in space might seem like it has little to do with greenhouse production here on Earth, but the work of Dr. Mike Dixon and his colleagues has already led to commercialized products – and more technologies for earthbound greenhouse operators are in the works.
Tomato plants under attack from botrytis fungus give off an aromatic substance that can be measured in greenhouses.
Agriculture has been around a long time, roughly 10,000 years by most accounts. Well-organized agricultural systems can be traced back to the Middle East from about 7,000 years ago. The most likely original source of agriculture is a region referred to as “The Fertile Crescent,” an area watered by the Nile, Euphrates and Tigris rivers1.
Oct. 28, 2009, Wageningen, the Netherlands – The best way for Dutch growers to dehumidify greenhouse air is to let outside air in, according to one researcher.
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