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Published online 1 September 1962
Published in Agron J 54:457-459 (1962)
© 1962 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Use of Radiophosphorous in Measuring Root Growth of Sorghum1

Jerry W. McClure and Clark Harvey2

Synopsis: Radiophosphorus provides a means of measuring the rate and extent of root growth throughout the growing season under field conditions with a minimum of soil disturbance. Data reported herein substantiate other findings on depth and lateral spread of grain sorghum roots but show, in addition, that significant root growth was made by a sorghum hybrid after flowering.

1 Part of a thesis submitted by the senior author in partial fulfillment for a Master of Science degree at Texas Technological College. The research was supported by funds appropriated for cooperative work between the Texas Agricultural Experiment Station and Texas Technological College and a grant from Pfister Associated Growers, Inc.

2 Former Graduate Assistant, Texas Technological College, and Professor of Agronomy, Texas Technological College and Texas Agricultural Experiment Station. The assistance of Jack King, Assistant Agronomist, Sorghum Investigations, Texas Agricultural Experiment Station, and N. W. Kramer, formerly of the Sorghum Investigations group, is gratefully acknowledged.

Received for publication December 21, 1961.




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Copyright © 1962 by the American Society of Agronomy.