Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 March 1968
Published in Agron J 60:234-236 (1968)
© 1968 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Response of Corn to White and Black Ground Covers1

J. K. Aase, W. D. Kemper and R. E. Danielson2

Corn was grown in rows between sloping concrete slabs painted either black or white. Grain yields were highest for the black concrete treatment. Transpiration was increased about 40% by the white concrete treatment.

With white surfaces, leaf temperatures were about 1 C higher and reflected radiation was five to six times greater compared to black surfaces. Corn leaves sampled adjacent to black concrete contained 40% more chlorophyll than corn leaves sampled adjacent to white concrete.

Key Words: corn yield • light • stomata

1 Joint contribution from Colorado State University and Northern Plains Branch, Soil and Water Conservation Research Division, Agricultural Research Service, USDA. Scientific Journal Series 1226. Based on the data from the thesis (Colorado State University) of the senior author. The work upon which this publication is based was supported in part by the U. S. Department of Interior as authorized by the Water Resource Research Act of 1964, Public Law 88-379.

2 Research Soil Scientist, USDA (formerly Graduate Research Assistant); Research Soil Scientist, USDA, and Professor (Agronomy); and Professor (Agronomy), Colorado State University, Fort Collins, Colo. 80521; respectively.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Crop Science Vadose Zone Journal
Journal of Natural Resources
and Life Sciences Education		 Soil Science Society of America Journal
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 1968 by the American Society of Agronomy.