ISHS Acta Horticulturae 907: VI International Symposium on Light in Horticulture
SUPPLEMENTAL LIGHTING INSIDE THE PLANT CANOPY INCREASED THE YIELD AND QUALITY OF THREE-TRUSS-ORDERED TOMATO |
| Authors: | H. Hamamoto, K. Yamazaki |
| Keywords: | Brix, cracking fruit, early-morning light, fluorescent lamps, puffy fruit |
| DOI: | 10.17660/ActaHortic.2011.907.45 |
| Abstract:
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. | |
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