SUPPLEMENTAL LIGHTING INSIDE THE PLANT CANOPY INCREASED THE YIELD AND QUALITY OF THREE-TRUSS-ORDERED TOMATO

We evaluated the effects of supplemental early-morning lighting inside the plant canopy on the yield and fruit quality of three-truss-ordered greenhouse tomato (Solanum lycopersicum L.). Supplemental lighting was provided by 40-W fluorescent lamps positioned inside the plant canopy, with a light intensity lower than 330 μmol m^-2 s^-1 PPFD for 2 h around sunrise.
Our experiments were carried out in spring-summer and in fall-winter.
Yields under supplemental lighting were up to 10% higher.
Brix values of the fruit did not differ between the two treatments, but the percentages of puffy fruit and cracked fruit tended to be lower under supplemental lighting.

VI International Symposium on Light in Horticulture

H. Hamamoto, K. Yamazaki

Brix, cracking fruit, early-morning light, fluorescent lamps, puffy fruit

https://doi.org/10.17660/ActaHortic.2011.907.45