Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 January 1964
Published in Agron J 56:7-10 (1964)
© 1964 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Effect of Row Spacing and Nitrogen Fertilizer on Production of Irrigated Russian Wildrye (Elymus junceus Fisch.). II. Relative Crown and Root Development1

Russell J. Lorenz and George A. Rogler2

Synopsis: Root development under 3-year-old plots of irrigated Russian wildrye differed when grown at 9- and 36-inch row spacings. Further study revealed a greater root weight per acre under rows 6 inches apart than under rows spaced 18 and 36 inches. Root concentration decreased with increased distance from the center of the row. Volume of roots increased with increasing N up to the 200-pound rate, followed by a decrease at the 400-pound rate.

1 Contribution from the Crops Research Division, ARS, USDA.

2 Research Agronomist, Crops Research Division, ARS, USDA.

Received for publication April 2, 1963.




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Copyright © 1964 by the American Society of Agronomy.