Hoagland, D. R., and Arnon, D. I., University of California Agricultural Station Circular 347 (1938). Burris, R. E., Magee, W. E., and Bach, M. K., Ann. Acad. Sci ...
Affected root systems contain irregular, large growths, called galls. Galls can be distinguished from beneficial nitrogen fixing bacterial nodules by breaking open the structure; galls will be ...
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