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Optimal light for greenhouse culture of American ginseng seedlings
John T A Proctor1, John W Palmer2
1Department of Plant Agriculture, University of Guelph, Guelph, ON, Canada.
Abstract:
Three greenhouse experiments with American ginseng seedlings growing under light levels from 4.8% to 68% showed a quadratic response for root dry weight, giving an optimal root dry weight of 239 mg (range 160-415 mg) at an optimal light level of 35.6% (range 30.6-43.2%).
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