Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 November 1962
Published in Agron J 54:541-543 (1962)
© 1962 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Vegetative Development of Alfalfa Seedlings under Varying Levels of Shading and Potassium Fertilization1

Arthur G. Matches, G. O. Mott and R. J. Bula2

Synopsis: Two levels of shading imposed 6 weeks after planting had more apparent effect upon the root and top dry weight accumulation of 3 alfalfa varieties than upon their height, root length, or root/top ratio. Root dry weight accumulation was much more sensitive to shading than top dry weight accumulation. Potassium fertilization affected plant height, root length, root dry weight accumulation, and the root/top dry weight ratio. Interactions of the second and third order were noted in several cases.

1 Contribution from the Department of Agronomy, Purdue University, Lafayette, Indiana. Journal Paper No. 1830 Purdue University Agriculture ExperimenSt tation. Part of a thesis submitted by the senior author in partial fulfillment of requirements for the Ph.D. degree.

2 Research Agrenomist, Crops Research Division, ARS, USDA, and University of Missouri (formerly Instructor Purdue University); Professor of Agronomy, Purdue University; and Agronomist, Crops Research Division, ARS, USDA, and Purdue University.

Received for publication January 18, 1962.




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Environmental Quality		 The Plant Genome
Copyright © 1962 by the American Society of Agronomy.