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Lighting
Can LEDs in a polytunnel keep jasmine flowering in winter?
In a Tamil Nadu winter trial, polytunnel jasmine given 4 hours of 80% red : 20% far-red LED light each evening carried 194.37 buds per plant, against 28.90 in the open field.
Research news
Horticulture Industry Updates
New studies, trials and growing technology from universities and research institutes, summarised in plain English, with the trial details and a link to the original study.
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Lighting
Does tweaking white LED light give better tomato seedlings?
In a South Korean trial, a white-plus-red LED with a shifted blue peak gave leafier, more compact tomato seedlings, but no significant difference in final fruit yield.
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LightingQuick find
Does extra light before harvest make leafy greens heavier?
In a greenhouse trial, extra light in the last week before harvest generally made hydroponic lettuce, arugula, spinach and mustard greens heavier.
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Lighting
Which LED colours bring okra into flower sooner?
Researchers in Côte d’Ivoire grew okra in pots under red, blue and red/blue (9:1) LED light on a 10-hour day, and over 60 days the red/blue mix gave the earliest flowering and the highest yield per plant of the five growing conditions they compared.
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Lighting
Does extra greenhouse light make young grapevines more fruitful?
North Carolina State University researchers found that supplemental LED light in the greenhouse made young Traminette grapevines more fruitful once they were planted in a vineyard, although yields did not differ between light treatments and Concord vines developed bud necrosis in every treatment.
