DYNAMIC LIGHT RECIPE FOR HORTICULTURE Russian patent published in 2018 - IPC A01G2/00 A01G7/00 

FIELD: agriculture.

SUBSTANCE: inventions relate to agriculture, in particular to horticulture. Method comprises the steps of: providing at least one plant seedling, determining a growth stage of the at least one plant seedling, wherein a growth stage is a phase in a development process of the at least one plant seedling, controlling the spectral composition of a grow light for illuminating the at least one plant seedling, based on the determined growth stage, and illuminating the at least one plant seedling with the grow light, where the step of controlling the spectral composition of the grow light comprises providing additional blue light in a chronologically earlier growth stage compared to a chronologically later growth stage. Plant seedling growing system comprises light source (20) for emitting grow light for growing plant seedling (29), sensor (21) for measuring a property of plant seedling (29), analyser (22) for determining a growth stage of the plant seedling based on the measured property of plant seedling (29) and a driver (25) for controlling light source (20) based on the growth stage of plant seedling (29), wherein driver (25) is adapted for controlling light source (20), such that the grow light emitted from light source (20) comprises additional blue light during a chronologically earlier growth stage of the plant seedling (29) compared to a chronologically later growth stage. Light recipe for controlling at least one light source for illuminating a plant seedling with grow light, the light recipe comprising a specification of at least two different light settings comprising a different blue/red radiation ratio, a specification of at least two growth stages for identifying at least two phases in a chronological development process of the plant seedling, wherein the specification of the light setting comprising the highest blue/red radiation ratio is assigned to the earlier of the at least two growth stages in the chronological development process of the plant seedling. Data medium containing a light recipe which, when executed in the system, executes the method.

EFFECT: inventions make it possible to improve the management of the morphology of plant seedlings and the production process thereof.

10 cl, 7 dwg