Uman Greenhouse Company (UGC) has been carrying out trials with hybrid lighting for some time now. During 2010-2011, the company tried adding interlighting to its current system, to provide the lower parts of the plants with additional sustenance. These trials proved that heavier tomatoes could be produced through interlighting. In 2011 the test was extended to include new LED interlighting modules, used in a 0.625 hectare plot.
The trial produced positive results. Working in close collaboration with Philips specialists and a plant physiologist, UGC was able to find the ideal spacing and settings for the horticultural lighting. It found that the light shined on the lowest leaves has a positive effect on coarsenes and production.
“We are proud to be the first grower to work with Philips LED interlighting”, said Nikolay Gordiy, General Director of UGC. “We have been using Philips GreenVision 1000 W systems since 2008. This modern HID installation immediately gave us a 25% increase in production. With the new LED interlighting solution we expect to increase production by a further 15%.”
The new greenhouse lighting is saving energy. Early indications show that using a partially LED-based system will create an energy saving of 80%. Thanks to these savings, the investment on the new lights will be paid back within two and a half years.