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Nitrification inhibitors and slow-release nitrogen fertilizers for rice (Oryza sativa L.)

Published online by Cambridge University Press:  27 March 2009

G. B. Rajale  and
Rajendra Prasad
G. B. Rajale
Affiliation:
Division of Agronomy, Indian Agricultural Research Institute, New Delhi-12
Rajendra Prasad
Affiliation:
Division of Agronomy, Indian Agricultural Research Institute, New Delhi-12
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Summary

Pot-culture experiments were made with the rice variety IR-8 on a sandy clay loam soil to study the relative efficiency of urea, urea treated with nitrification inhibitors N-Serve and AM, AM-fertilizer, and slow-release nitrogen fertilizers IBDTJ, oxamide and N-enriched coal. N-enriched coal supplied very little nitrogen to rice and gave no more yield than the control. All other materials were superior to urea. Largest yield of rough rice and nitrogen uptake by rice was obtained with IBDU and AM-fertilizer. Compared with untreated urea IBDU, oxamide, AM-fertilizer and urea treated with N-Serve or AM left larger amounts of mineral-nitrogen in the soil after the harvest. In the case of nitrification inhibitors residual ammoniacal-nitrogen was more at the higher rates of inhibitors.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 80 , Issue 3 , June 1973 , pp. 479 - 487
Copyright
Copyright © Cambridge University Press 1973

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