Krishna Nemali and Petrus Langenhoven (plangenh@purdue.edu, 765-496-7955), Department of Horticulture and Landscape Architecture, Purdue University A question many growers are asking is whether supplemental lighting is profitable for hydroponic lettuce production during the winter. We will address this specific question in this article.  Light requirement (daily light integral, DLI) of lettuce can vary from 15-20…Read more about How to determine if supplemental lighting is economical for hydroponic lettuce production in winter?[Read More]


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