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  • Author or Editor: Jacques Blain x
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Four cultivars of greenhouse cucumber (Cucumis sativus L. ‘Corona’, ‘Far-biola’, ‘Pandex’, and ‘Sandra’) were grown under four lighting conditions: natural light and natural light supplemented by 100, 200, or 300 μmol·s−1·m−2 provided by high-pressure sodium lamps for a photoperiod of 18 hr. For this purpose, transplants were first seeded on 24 Sept. 1984, transplanted on 23 Oct., and grown according to the successive cropping method. Supplemental lighting enhanced plant growth and increased yield. Our data indicate that a marketable yield of 240 fruit/m2 per year of greenhouse cucumbers could be obtained with supplementary lighting of 300 μmol·s−1·m−2.

Open Access