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Published in Soil Sci Soc Am J 16:282-285 (1952)
© 1952 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Further Trials with Intercropping of Corn in Established Sods1

Touby Kurtz, S. W. Melsted, R. H. Bray and H. L. Breland2

ABSTRACT

This paper reports a continuation of trials in which corn is grown in cultivated slits in previously established sods of several single grasses and legumes. An attempt was made to estimate the nitrogen needs of the corn under different intercrops and to determine which intercrops were most adaptable and desirable in this system. Some data on soil moisture under the different systems are reported.

With adequate nitrogen, yields of corn in intercrops varied from around 80% of, to approximately the same as, the yields obtained under conventional systems. Among the legumes, Ladino clover and birdsfoot trefoil survived longest as intercrops. While all intercrops competed strongly with the corn for nitrogen, competition by the grasses was most severe and little difference was shown among the grasses with respect to survival and adaptability. Changes in soil moisture were more rapid under intercrop systems because of deeper and more rapid penetration of rainfall and because of utilization of moisture by the intercrop.

NOTES

1 Contribution from the Department of Agronomy, Illinois Agricultural Experiment Station, Urbana, Ill. Published with the approval of the Director. Presented before Section IV, Soil Science Society of America, August 30, 1951.

2 Associate Professor, Associate Professor, Professor, and Assistant in Soil Fertility, respectively, University of Illinois.






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The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 1952 by the Soil Science Society of America.