Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 March 1964
Published in Agron J 56:201-204 (1964)
© 1964 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Energy Balance as Affected by Height and Maturity of Sudangrass1

Leo J. Fritschen and C. H. M. van Bavel2

Synopsis: Evapotranspiration rates of 75- and 100-cm. crops of sudangrass were similar and considerably larger than that of the 140-cm. height. This difference appeared to be due to the presence of seedheads rather than physiological maturity. It was also shown, for days of similar energy input, that evapotranspiration increased with wind speed. These facts emphasize the point that for well-watered sudangrass, physical rather than physiological factors regulated the evapotranspiration.

1 Contribution from the Soil and Water Conservation Research Division, ARS, USDA. This work was supported in part by the Department of Meteorology, U. S. Army Electronic Research and Development Activity, Fort Huachuca, Arizona.

2 Research Meteorologist and Chief Physicist, U. S. Water Conservation Laboratory, Tempe, Arizona.




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Environmental Quality		 The Plant Genome
Copyright © 1964 by the American Society of Agronomy.