Vegetative and reproductive stage lighting interactions on flower yield, water use efficiency, terpenes, and cannabinoids of Cannabis sativa.

ABSTRACT: Cannabis is among the most water-demanding crops, facing ongoing expansion and water use regulations. This study evaluated the effects of greenhouse sunlight plus increased LED supplemental lighting on flower yield, water use (WU), and efficiency (WUE), as well as flower partitioning, cannabinoids, terpenes, and leaf gas exchange in Cannabis sativa 'Suver Haze'. The supplemental lighting programs applied during the vegetative and flowering stages were: (1) Static LED levels (PPFD: 150, 300, 500, or 700 µmol m^-2 s^-1 for 72 days) and (2) Dynamic LED levels (PPFD: 150, 300, or 500 for 28 days, followed by 700 µmol m^-2 s^-1 for 44 days). Flower yield and crop WUE increased linearly with the increase of Dynamic and Static lighting. For instance, a 4.7-

SUBMITTER: Collado CE 

PROVIDER: S-EPMC12699039 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature