Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 October 1958
Published in Agron J 50:571-574 (1958)
© 1958 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Factors Affecting the Expression of Bacterial-Induced Chlorosis of Soybeans1

Herbert W. Johnson, Ura Mae Means and Francis E. Clark2

Synopsis: The expression of bacterial-induced chlorosis in several varieties of soybeans was affected by the concentration and proportions of major nutrients, by different sand substrates, and other plant treatments. The most susceptible varieties developed light to severe chlorosis in all treatments. Less susceptible varieties developed light to moderate chlorosis in most treatments but appeared to be completely resistant in others. Two varieties previously classed as completely resistant developed chlorosis in some treatments.

1 Contribution from Crops and Soil and Water Conservation Research Divisions, ARS, USDA, Beltsville, Maryland.

2 Research Agronomist, Bacteriologist and Microbiologist, respectively.

Received for publication February 6, 1958.




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Copyright © 1958 by the American Society of Agronomy.