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Published online 1 February 1959
Published in Agron J 51:84-86 (1959)
© 1959 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Growth Response of Alfalfa Seedlings Under Various Light Regimes1

R. J. Bula, C. L. Rhykerd and R. G. Langston2

Synopsis: Dry weight accumulation in alfalfa seedlings was essentially proportional to light intensity when grown under 750, 1500, and 3000 f-c. and a 15-hour photoperiod. A high light intensity period followed by a low intensity period resulted in greater dry weight accumulatlon than an inverse light regime even though the total amount of incident energy was the same.

1 Journal Paper No. 1268, Purdue University Agr. Exp. Sta. Contribution from Crops Research Division, ARS, USDA, and Departments of Agronomy and Horticulture, Purdue University, Lafayette, Indiana.

2 Agronomist; formerly Instructor in Agronomy, presently Soil Scientist, U.S. Regional Pasture Res. Lab., State College, Pa.; and Assistant Professor of Horticulture; Purdue University.

Received for publication May 21, 1958.




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Copyright © 1959 by the American Society of Agronomy.