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Published in Crop Sci 8:658-660 (1968)
© 1968 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Relationship of Carbohydrate and Nitrogen Compounds in the Haplocorm to the Growth of Timothy (Phleum Pratense, L.)1

R. W. Sheard2

The early spring growth of timothy was found to be negatively associated with the fructose concentration in the tertiary shoot. A positive correlation between spring growth and N fractions was established, the water insoluble N fraction being most closely associated with spring growth. While it is generally accepted that high production following a period of stress requires an adequate carbohydrate source, evidence is presented to show an internal source of nitrogenous material for rapid synthesis of new protoplasm may be of greater importance.

Key Words: Fructan • Insoluble Protein N • Nonprotein N • Food Reserves

1 This study was supported in part by the Ontario Agricultural College, University of Guelph and the Ontario Dept. Agr. and Food, and in part by the College of Agriculture, Cornell University, Ithaca, N.Y. It is a portion of a thesis submitted by the author in partial fulfillment of the requirements for the Ph.D. degree at Cornell University. Agron. Pub. No. 753.

2 Associate Professor of Soil Science, O.A.C., University of Guelph, Ontario.

Received for publication January 26, 1968.




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