Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 September 1962
Published in Agron J 54:399-403 (1962)
© 1962 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Phenological Observations: The Dependent Variable in Bioclimatic and Agrometeorological Studies1

James E. Newman and James B. Beard2

Synopsis: This paper discusses some methods of obtaining phenological measurements as well as some criteria for selecting the proper observation, so that measurement of dependent variables will have a magnitude of accuracy similar to that of independent variable measurements, particularly with respect to time.

1 An invitational paper presented at the Third National Conference on Agricultural Meteorology in Kansas City, Missouri, on May 18–19, I960. Contribution from Department of Agronomy, Purdue University, Lafayette, Ind. Journal Paper No. 1765. Funds supporting these studies were contributed through the USDA Agricultural Research Service and National Science Foundation. Gratitude is expressed to Professors J. Y. Wang, Department of Meteorology, University of Wisconsin, and M. R. Teel, Department of Agronomy, Purdue University.

2 Assistant Professor of Agronomy and Agricultural Climatology and former Research Assistant (now Assistant Professor of Farm Crops at Michigan State University), respectively.

Received for publication September 25, 1961.




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Copyright © 1962 by the American Society of Agronomy.