UTILIZATION OF FERTILIZER PHOSPHORUS BY WHEAT AND RICE FROM DIFFERENT SOILS

Author: Datta, N. P.
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
Additional Creators: Datta, N. R. and Srivastava, S. C.

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Summary

Wheat and rice were grown in a greenhouse on different soils collected from all over the country. Tagged superphosphate was applied at different doses. About fifty percent of these soils responded to phosphorus fertilization. Percent utilization of fertilizer phosphorus applied to these soils varied from 8 to 16, 2 to 9, and 2 to 20 in case of wheat, early paddy and late paddy, respectively. Degrees of phosphorus unsaturation in these soils were determined by Piper's method. The extent of unsaturation was calculated. The unsaturation percentages were found to correlate significantly at 1% level with percentage utilization of labelled superphosphate. It appears that the amount of phosphate the plant can take is limited by the degree of saturation of the exchange complex and that the complex serves as a competing system for available phosphorus and plays an important role in the phenomenon of contact exchange in phosphate nutrition. (C.H.)

Report Numbers

A/CONF.15/P/1947

Other Subject(s)

Collection

U.S. Atomic Energy Commission depository collection.

Note

NSA number: NSA-13-006260
OSTI Identifier 4270429
Research organization: Indian Agricultural Research Inst., New Delhi.

View MARC record | catkey: 38046456