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Investigations on the root nodule bacteria of leguminous plants. XVII. efficiency of different strains of clover nodule bacteria

Published online by Cambridge University Press:  27 March 2009

Artturi I. Virtanen  and
Synnöve von Hausen
Artturi I. Virtanen
Affiliation:
(Laboratory of the Foundation for Chemical Research, Helsinki, Finland.)
Synnöve von Hausen
Affiliation:
(Laboratory of the Foundation for Chemical Research, Helsinki, Finland.)
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Extract

The efficiency of ten different strains of Rhizobium trifolii was studied with nitrogen free quartz sand cultures of red clover during three consecutive years.

(1) In the first season, distinct differences were noted in the size and nitrogen contents of the crops produced, after inoculation with ten various bacterial strains. These differences remained clearly discernible throughout the experimental period of 3 years: the individuality of the strains had not materially changed during this time.

(2) Reinoculation with the most efficient strain during the third year did not affect the plants.

(3) The loss of plants in winter was greatest in the jars which were inoculated with weak strains.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 25 , Issue 2 , April 1935 , pp. 290 - 296
Copyright
Copyright © Cambridge University Press 1935

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References

REFERENCES

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