Light plays an important role in market-oriented greenhouse production. Products have to be ready for the market on time with the desired volume and quality. In order to meet with these requirements, an optimal use of light as one of the most important production factors is of utmost importance.
Natural light is free and its utilization in greenhouse horticulture is necessary for sustainable crop production. The addition of supplementary artificial light however, will remain necessary in several regions of the world.
By manipulating light we are able to control and steer crop growth and development. Changing the factor light has a large impact on the total production system: microclimate and energy consumption are influenced, costs and benefits are affected.
Research on light in horticultural systems is necessary for a sustainable and market-oriented greenhouse production in the future.