Sustainability Issue #3 June 2010

This is printed from sustainability.formas.se, last updated 5/28/2010 4:44:57 PM

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Light emitting diodes for potted plants

The way potted plants and salad leaves can be illuminated with LED techniques is now being studied at SLU Alnarp.

Researchers have so far found that the flowering of short-day plants such as chrysanthemum, kalanchoe and poinsettia could be prevented with white, red, yellow and green LED light as long-day treatment. Herbs  and sunflowers could also be grown in a cold frame with LED light as the only light source. White light gave the highest fresh weight, closely followed by blue light. In green light the plants grew longer but had a lower fresh weight. Experiments continue.

Light emitting diode technology changes electricity into light efficiently, without the presence of ultraviolet or infrared light or thermal  radiation. The lamps can therefore be placed near the plants they are to illuminate, in contrast to existing greenhoue light fittings  with discharge lamps (SON-T) or fluorescent tubes.

Responsible for this page: Birgitta Bruzelius

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Sustainability June 2010

Focus presentation

Construction below ground Several large infrastructure projects are at present in progress in Sweden. A substantial proportion of these are tunnels and other underground construction. At the ...

Focus articles

Below ground in the urban environment There is a great increase in underground construction at present. Our rocks will to an increasing extent be used for transport, storage spaces and garages. Several ... More infrastructure for the money Research on infrastructure below ground and in rock is badly neglected. Estimates nevertheless show that all new input of funds for research and development yields... Do not build on weak ground - The expression is ambiguous and good, says Bo Lind, Director of Research at Swedish Geotechnical Institute SGI. He says that a large proportion of the costs of dam... Geosciences are taken for granted It is unfortunate that so few pupils come into contact with geosciences during their school years, says Lars Persson, Director of Research at Geological Survey of Sw... Hydroelectric plant below ground Because of expensive oil and the climate threat, Greenlanders want to replace fossil fuels by hydroelectric power. A completely new plant generating 15 MW replaces t... Tunnels demand special knowledge Owing to geological uncertainties, underground projects may be regarded as innovation projects since the knowledge underlying the geological forecast is constantly u... Mutual benefit of risk research Do people bathing in Hörsholm Municipality know how good conditions are for them? Every summer, the treatment plant switches on the UV light as an extra stage in eff... The chemistry of groundwater is a wildcard in construction The way the chemistry of the groundwater will change in the area around a tunnel construction is difficult to predict. Groundwater formation and flow patterns are af... This is how a check is kept on tunnel construction Several tunnel projects are in progress or at the planning stage in Sweden just now, and one problem is delays and cost overruns. One explanation is the difficulties...

The Interview

Gives industry knowledge for sustainable development Safe construction systems, environmentally sustainable foods and effective use of resources. These are some of the areas where SP, Technical Research Institute of Sw...

More articles

Agriculture a key area in EU research cooperation A knowledge based society is one of the cornerstones of the recently adopted Lisbon Treaty. Joint Programming (JP) is a response to the great challenges faced by hum... Marine environment research – how good is it? Sweden’s marine environment research is of high scientific quality, but the results of this research must be communicated better to users and politicians. This is di... A good growth gives results The report on the research project which had worked for four years on the early phases of forest management was presented in March 2010. It represents part of the s... Butterfly census In the spring of 2010, a nationwide project on butterflies will begin. The help of the public is needed for this. A researcher at Lund University has been commissio... Swedish phenology network “under construction” Phenology deals with periodic patterns in nature. Phenologists also endeavour to understand what governs these patterns and what happens if they change. A network of... Better transport for chickens When broilers are loaded and transported in Sweden, about 0.04 – 0.29 per cent die in mechanically ventilated lorries. In an international perspective, this is appea... New book: The pussy willow – the most important breakfast for survival In pace with the advance of modern agriculture and silviculture, the number of old pussy willows has diminished in Sweden. This is how wind power affects the environment The research programme Vindval has published a popular scientific report on the environmental impact of wind power. The report is entitled “Now we know. The environm... The seeds of the Moringa tree can purify water A Swedish-African study demonstrates a cheap method of purifying water. It is the tree Moringa oleifera, which, in a certain phase, can perform the same service as a... A cocktail of chemicals harms people and the environment During our lives, we are exposed to a large quantity of chemicals through food, water, medicines, beauty products, clothes, shoes and the air we breathe. Researcher... The Lovén Centre names a bacterium Researchers at the Sven Lovén Centre for Marine Sciences, Göteborg University, have found a completely new species of bacterium that lives only in Gullmars-fjorden. ...

In brief

New framework programme: ecoproduction and ecoconsumption A fourth framework programme for research in organic production and consumption for the period 2010-2012 has been drawn up in a broad anchoring process where Centre ... MSEK 36 makes shops sustainable Climate-marked food shops for climate-smart choice of foods, Methods to reduce waste of food in food shops, Support for green and ethical markets and sustainable pac... Success for urban research High productivity + high quality. That is the verdict for Centre for Urban and Regional Studies (Cures) at Örebro University. The evaluation was commissioned by Form... Light emitting diodes for potted plants The way potted plants and salad leaves can be illuminated with LED techniques is now being studied at SLU Alnarp.

Results from research

Transport that promotes welfare How did the research turn out? What were the findings? Researchers themselves report briefly on the research they have undertaken with funding support from the Forma... Better cooker at the right price? How did the research turn out? What were the findings? Researchers themselves report briefly on the research they have undertaken with funding support from the Forma... Important hidden members of the fungal world How did the research turn out? What were the findings? Researchers themselves report briefly on the research they have undertaken with funding support from the Forma...
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