Continuous Lighting
Accelerating Maturity

Bickford: Continuous lighting, trees (1972)

Young & Hanover: Continuous light, Picea seedlings (1976)

Madison: Sprouting Lycoris Seeds

Tibbitts: Continuous lighting, potatoes (1994)

Demers: Continuous lighting, tomato, pepper (2002)

Sysoeva, et al.: Continuous Light (2010)