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Published online 1 June 1958
Published in Agron J 50:323-326 (1958)
© 1958 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Forage and Root Growth of Five Sweetclover Varieties and Their Influence on Two Following Corn Crops1

F. V. Pumphrey and F. E. Koehler2

Synopsis: Spanish, Evergreen, and Madrid sweetclovers differed little in dry matter production and nitrogen content in first- and early second-year growth and exceeded common white only in first-year growth. Hubam produced more forage, but contained no more nitrogen per acre. The biennial varieties did not differ appreciably in quantity of roots per acre. Nearly 90% of the roots were in the top foot. Nitrogen content of the roots decreased with increasing depth.

1 Contribution from the Scotts Bluff Exp. Sta., Nebraska Agr. Exp Sta. and the Soil and Water Conservation Research Division, ARS, U.S.D.A. Published with the approval of the Director as Paper No. 844, Journal Series, Nebraska Agr. Exp. Sta.

2 Formerly Assistant Agronomist, Nebraska Agr. Exp. Sta., now Assistant Agronomist, Oregon Agr. Exp. Sta.; and formerly Soil Scientist, Western Soil and Water Management Research Branch, SWC, ARS, U.S.D.A., now Associate Soil Scientist, Washington State College, respectively.

Received for publication November 12, 1957.




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Copyright © 1958 by the American Society of Agronomy.