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Published online 1 September 1960
Published in Agron J 52:542-544 (1960)
© 1960 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Comparison of the Clipping and Chromogen-Chromic Oxide Methods for Pasture Evaluation Using Various Forage Mixtures1

G. C. Marten, W. F. Wedin and J. D. Donker2

Synopsis: The chromogen-chromic oxide method of measuring dry matter consumption by grazing dairy cows was more sensitive than the clipping (mower-strip) method. Results by clipping were variable and unreliable. The comparison was not directly affected by differing forage mixtures.

1 Paper No. 4225, Scientific Journal Series, Minnesota Agricultural Experiment Station, St. Paul, Minnesota. Part of a thesis submitted to the University of Minnesota in partial fulfillment of requirements for the M.S. degree. Research in cooperation with the Department of Agronomy and Plant Genetics, and the Department of Dairy Husbandry, University of Minnesota, and with the Crops Research Division, ARS, USDA.

2 Cooperative Graduate Fellow (NSF), Department of Agronomy and Plant Genetics, University of Minnesota; Research Agronomist, Crops Research Division, ARS, USDA; and Associate Professor of Dairy Husbandry, University of Minnesota. Grateful acknowledgments are given to A. R. Schmid for helpful advice, and to C. E. Gates for counsel in the statistical analysis of the experiment.

Received for publication January 30, 1960.




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Copyright © 1960 by the American Society of Agronomy.