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Published online 1 November 1957
Published in Agron J 49:581-585 (1957)
© 1957 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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A Statistical Study of Several Methods Used in Determining the Botanical Composition of a Sward: II. A Study of Several Forage Mixtures1

R. W. VanKeuren and H. L. Ahlgren2

Synopsis: Correction factors developed for use with the inclined point quadrat method were tested. The correction factor based on yield per hit gave more satisfactory results than did the factor based on the regression coefficients. The use of the regression equations to provide estimates of yield of forage by the inclined point quadrat method did not give satisfactory results for all species.

1 Contribution from the Department of Agronomy, Wisconsin Agr. Exp. Sta., Madison, Wis. Published with the approval of the Director of the Wisconsin Agr. Exp. Sta. The results reported are part of the thesis submitted by the senior author in partial fulfillment of the requirements for the Ph.D., University of Wisconsin. Supported in part by the Research Committee of the Graduate School from funds supplied by the Wisconsin Alumni Research Foundation.

2 Assistant Agronomist, Irrigation Exp. Sta., Prosser, Washington, formerly Wisconsin Alumni Research Foundation Research Assistant in Agronomy; and Professor of Agronomy and Associate Director of Extension, Wisconsin Agr. Exp. Sta., Madison, Wis. The authors are grateful to Dr. J. H. Torrie of the Wisconsin Agr. Exp. Sta. for assistance and guidance in the statistical analysis of data.






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Copyright © 1957 by the American Society of Agronomy.