Publications by authors named "Kouta Shiina"
Supplemental lighting can enhance yield when sunlight is limited, as in winter. As the effect of frequent cloudy or rainy days in other seasons on plant growth and yield remains unclear, we investigated the effect on tomato (Solanum lycopersicum) and compensation by supplemental LED inter-lighting. Plants were grown under 30% shade cloth on 0%, 40%, or 60% of days.
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- Greenhouses with advanced environmental control systems allow for higher yields of produce, but lower light levels at the lower leaves during winter can limit growth, necessitating supplemental lighting.
- This study tested the effects of daytime and nighttime LED inter-lighting on tomato plants' growth and yield, finding that both methods improved photosynthesis and yield, especially in winter.
- Daytime LED inter-lighting increased winter yields by 27%, while nighttime inter-lighting improved yields by 24% in winter and 12% in summer, also enhancing fruit quality in terms of soluble solids and ascorbic acid content.