Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 September 1962
Published in Agron J 54:425-427 (1962)
© 1962 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Soybean Chlorosis from Heavy Fertilization1

J. B. Weber and A. C. Caldwell2

Synopsis: Heavy applications of concentrated superphosphate alone and in combination with KC1 resulted in chlorotic plants. There was evidence that K was limiting on plants receiving high rates of P and that Mn was limiting on plants receiving high rates of both P and K. Applications of Mn chelates gave a slight increase in yield on plots that received high rates of P and K and a large decrease on plots that received P only.

1 Paper No. 4687 Scientific Journal Series, Minnesota Agr. Exp. Sta., University of Minnesota, St. Paul. Part of a thesis submitted by the senior author in partial fulfillment of the requirements for the M.S. degree. The authors gratefully acknowledge grants from the American Potash Institute that supported this project in part.

2 Graduate Research Assistant, and Professor of Soils.

Received for publication September 12, 1961.




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The SCI Journals Crop Science Vadose Zone Journal
Journal of Natural Resources
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Environmental Quality		 The Plant Genome
Copyright © 1962 by the American Society of Agronomy.