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Published online 1 January 1964
Published in Agron J 56:73-76 (1964)
© 1964 American Society of Agronomy
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An Evaluation of the Visual Weight Estimation Method of Determining Botanical Composition of Forage Plots

O. J. Hunt2

Synopsis: The visual weight estimation method of determining botanical composition was found to be extremely accurate. Certain biases which may be characteristic of the method were discussed. Education or orientation of estimators with known samples increased accuracy of estimates. Accuracy of estimates varied with relative composition of the samples.

2 Research Agronomist, Crops Research Division, ARS, USDA, Laramie, Wyoming (formerly at Beltsville, Maryland). Assistance received from E. J. Koch, Biometrical Services, ARS, from W. D. Hanson, Geneticist, North Carolina State College (formerly of Biometrical Services, ARS), and from R. E. Wagner, Eastern Director. American Potash Institute (formerly Research Agronomist, ARS) is gratefully acknowledged.

Received for publication May 10, 1963.




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Copyright © 1964 by the American Society of Agronomy.