Actions for THE EFFECT OF RHIZOSPHERE MICROORGANISMS UPON THE UPTAKE AND RELEASE OF PHOSPHORUS AND SULPHUR BY THE ROOTS OF ARBOREAL SEEDLINGS

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THE EFFECT OF RHIZOSPHERE MICROORGANISMS UPON THE UPTAKE AND RELEASE OF PHOSPHORUS AND SULPHUR BY THE ROOTS OF ARBOREAL SEEDLINGS

Author
Akhromeiko, A. I.
Published
[Place of publication not identified] : [publisher not identified], 1959.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1959.
Physical Description
microopaque : positive ; 8 x 13 cm cm
Additional Creators
Shestakova, V. A.

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Summary
Phosphorus-32 was used in tracer studies of the relationship between rhizosphere microorganisms and higher plants. Vigorous development of microorganisms within the rhizosphere was found to inhibit temporarily phosphorus entry inio oak and ash tree seedlings, but an appreciable portion of the phosphorus taken up by the microorganisms became available for the plants after 10 days. Rizosphere microorganisms were found to take up phosphorus compounds secreted by the seedling roots, thereby stimulating secretion of new portions of these compounds into the sand and water medium. A diurnal rhythm was noted both in the rate of root secretion of phosphorus and sulfur and in bacterial growth. Phosphorus containing root secretions also stimulated the growth of Azotobacter cells in the root system. (C.H.)
Report Numbers
A/CONF.15/P/2312
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
NSA number: NSA-13-006311
OSTI Identifier 4287457
Research organization: U.S.S.R.
View MARC record | catkey: 39305147