Loss of light through condensation
Water droplets on the inside of greenhouses due to condensation can cause considerable loss of light.
Research by Wageningen UR* shows that the average loss can reach 9%! Therefore, by allowing the condensation layer on the inside of the greenhouse roof to flow away, a large increase in light transmission can be achieved.
New films can have an anti-condensation coating applied in the factory. This coating will last about two production seasons. Films with no (longer) anti-condensation properties can be treated with the AntiCondens coating produced by Mardenkro. This coating has been developed to treat existing films or polycarbonate panels with an anti-condensation layer and it can easily be applied to the inside of the greenhouse. The optimal result is achieved by lightly misting the film or polycarbonate panels and allowing it to dry well. AntiCondens should always be applied well before the condensation season begins. The coating is water-based and safe to use.
How much light does my crop need?
There is an optimal amount of light for every crop. Too little means that production will be low. But too much will put pressure on the yield and quality. So custom work is always key.
Incoming light in winter certainly can be improved
During the winter natural light is the limiting factor for growth and production: Every reason to look at optimising the light entering the greenhouse during the winter. Frank Kempkes of Wageningen UR Greenhouse Horticulture thinks it’s possible to improve it by 15-20%.
Getting more light into the greenhouse in three steps
An old growers saying has it that 1% more light yields 1% higher production. Scientists have since shown that this is in fact a bit more nuanced: depending on the crop this varies from 0.5% to 1.25%. However, the principle remains the same; during a large part of the year all of the sunlight can effectively...