Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 15:214-216 (1975)
© 1975 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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A Test of the Duncan Model of Photosynthesis in Plant Communities1

M. E. Keener and K. J. McCree2

The Duncan model was tested on a rice (Oryza sativa L.) crop growing in an environmental chamber, where all the required input data could be collected. The data included; incident light environment, leaf optical properties and photosynthetic rates, and canopy architecture. Canopy extinction coefficients and canopy photosynthetic rates calculated with the model agreed with the measured values, within the estimated accuracy of the tests (± 20%).

Key Words: Oryza sativa L. • Canopy architecture • Light penetration

1 Submitted by the senior author in partial fulfillment of degree requirements for M.S. in biology, Texas A&M University, College Station, TX 77843.

2 Former graduate research assistant, Department of Biology (now research associate, Department of Soil & Crop Sciences) and associate professor, Department of Soil & Crop Sciences, Texas A&M University.

Received for publication May 20, 1974.




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Environmental Quality		 The Plant Genome
Copyright © 1975 by the Crop Science Society of America.