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Synopsis: Alfalfa, red clover, and birdsfoot trefoil seedlings gave a linear growth response to light treatments ranging from 2,400 to 14,400 foot-candle-hours per day. During the period from 41 to 56 days after seedling emergence, under the highest light treatment, red clover made 20% more top growth and 50% less root growth than alfalfa. Under the lowest light treatment the top growth of red clover was approximately twice that of alfalfa.
2 Former Graduate Research Assistant, Purdue University, now Extension Agronomist, The Ohio State University, Columbus; and Professor of Agronomy, Purdue University, Lafayette, Ind.
Received for publication February 11, 1958.
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