Áhrif ljósmeðferðar í forræktun og lýsingarmeðferð í áframhaldandi ræktun á vöxt, uppskeru og gæði gróðurhúsatómata : final report

Abstract

In Iceland, winter production of greenhouse crops is totally dependent on supplementary lighting and has the potential to extend seasonal limits and replace imports during the winter months. Adequate guidelines regarding the effect of the light treatment in young plant production and the light treatment in continuous production are not yet in place for tomato production and need to be developed. The objective of this study was to test if the light source (HPS or LED) in young plant production and the light treatment in continuous production is affecting growth, yield and quality over the winter of tomatoes and to evaluate the profit margin.